baber/WOPTO huggingface dataset:
Patent GB-298819-A (GB)
Title: Improvements in or relating to the manufacture of cellulose acetate
IPC: C08B3/24
Filed: 1928-01-02
Abstract: 298,819. Bulmer, J. W. Jan. 2, 1928. Right to Patent relinquished. Cellulose acetates.-The after - hydrolysis of cellulose acetate is conducted in two stages-in the first stage there is added to the acetylation mixture so much water as will produce a mild hydrolysis of the acetate, which is subsequently precipitated, and in the second stage the precipitated acetate is treated with dilute acid until the desired degree of hydrolysis is obtained.
Patent HU-T57249-A (HU)
Title: Process for producing phosphate modified bismuth-vanadate pigments
Inventor: SULLIVAN ROBERT M
IPC: C01G31/00
Filed: 1991-01-10
Abstract: Compounds of the general formula (Bi,E)(V,P,G)O4 (I> in which E is an alkaline earth metal, zinc or mixtures thereof and G is molybdenum, tungsten, niobium or mixtures thereof, in which the molar exchange of Bi by E is zero to 40%, of V by P 5 to 50% and of V by G zero to 40%. These compounds are pigments of improved coloristic properties and improved resistance to chemical attack.
Patent JP-S5493712-A (JP)
Title: Air intake device for internal combustion engine
Inventor: TAKAISHI TATSUO
IPC: F02B37/00
Filed: 1978-01-05
Abstract: PURPOSE: To make a supply of intake air quantity fully capable into the cylinder both for at low and high revolution of the engine, by providing an intake air chamber, intake pipe, intake manifold, and an on-off valve at upstream side of the branch path in the intake air chamber.  
     CONSTITUTION: With an on-off valve 6 closed, air in an intake air chamber 3 is carried out to an intake manifold 4 through an intake pipe 5. With a suitable length of pipes selected for the intake pipe 5 and the intake manifold 4, an intake air can be fully supplied to within the cylinder by utilizing the suction pulsation phenomenon at a low speed operation of the engine. With a rotational speed of the engine 1 going up, when becoming not capable of utilizing the suction pulsation phenomenon, if made open the on-off valve 6, the intake air flows into the intake manifold 4 from the valve port without passing through the intake pipe 5 as shown by a broken line arrow mark in the drawing. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-H03204985-A (JP)
Title: Semiconductor laser
Inventor: HIRONO TAKUSHI
IPC: H01S5/00
Filed: 1990-01-05
Abstract: PURPOSE:To obtain a semiconductor laser provided with an active layer whose laser oscillation threshold current is small by a method wherein the active layer is formed rectangular in cross-section and specified in thickness and width. CONSTITUTION:The thickness d and the width W of an active layer 4 are so set as to satisfy following formulas, 0.2mum<=d, 0.25mum<=W, and d+W<=0.7mum. When the thickness d and the width W of the active layer 4 are set so as not to satisfy the above formulas, Ith (d, W) is made to increase. For instance, if the thickness d of the active layer 4 is set to be smaller than the above formula by 0.2mum, Ith (d, W) is made to increase by 10%. When the width W of the active layer 4 is set to be smaller than the above formula by 0.2mum, Ith (d, W) is made to increase by 20% or so. If d+W is larger than the above formula by 0.2mum, Ith (d, W) is made to increase by 10%. Therefore, when a semiconductor laser low in threshold current is manufactured, it is not preferable that the thickness or the width of an active layer is set not to satisfy the above formulas.
Patent JP-H10200264-A (JP)
Title: Multilayer printed wiring board and manufacture thereof
Inventor: HIRAMATSU YASUJI
IPC: H05K3/46
Filed: 1997-01-06
Abstract: PROBLEM TO BE SOLVED: To obtain reliable continuity by filling and hardening a conductive paste contg. conductive grains and resin matrix as main components into at least one inner layer via-opening and connecting its surface to an outer layer via formed on a dissolved rough surface. SOLUTION: A conductive paste 6 contg. conductive grains and resin matrix as main components is filled into and hardened in inner layer via-openings 5. A protective film 4 is peeled off to remove the paste 6, thereby forming smoothed inner layer vias 7 made of the paste 6. Epoxy resin grains on the surface of an adhesive layer 3 are dissolved away by acid, etc., to rough the adhesive layer surface and the surfaces of the vias 7. A resist 8 is formed on a wiring board contg. a catalyst nuclei and outer layer circuit is formed on another part having no resist. Outer layer vias may be superposed to obtain reliable continuity.
Patent AT-A16995-A (AT)
IPC: F15B21/04
Filed: 1995-02-01
Abstract: PCT No. PCT/AT96/00015 Sec. 371 Date Aug. 1, 1997 Sec. 102(e) Date Aug. 1, 1997 PCT Filed Jan. 31, 1996 PCT Pub. No. WO96/23980 PCT Pub. Date Aug. 8, 1996A device for the operation of a hydrostatic drive (1) having a periodically operable switch valve (2) which connects a resonant pipe (4) connected with the hydrostatic drive (1) for the formation of standing pressure waves in the hydraulic fluid under resonant conditions alternately to a pressure-fluid supply line (5) and to a return line (6). In order to create advantageous control condition, the resonant pipe (4) has a pressure outlet (7) in an oscillation node in the standing pressure waves, and that the switch times of the switch valve (2) be controllable with constant switch frequency.
Patent DK-62787-A (DK)
Inventor: LONA NORBERT
IPC: B29C53/80
Filed: 1987-02-06
Abstract: 1. A process for the continuous production of fibre-reinforced plastics hollow sections, wherein a parting foil (3), and inner gel coat and a first layer of fibrous material (20, 21) are applied round a stationary mandrel (1), then further layers (34, 37) of fibrous material and liquid plastics material are laid round the first layer of fibrous material (20, 21), the hollow section is calibrated in a forming tool (40) and then heated so that the plastics material is cured, and wherein the cured hollow section is continously withdrawn from the mandrel (1) by a gripping device (52) and is finally cut into lengths, characterized in that the inner gel coat is applied to the parting foil (3) provided on the mandrel (1) and is gelled by heating, that the first layer of fibrous material (20, 21) with the liquid plastics material is laid, overlapping, on the inner gel coat, and that before the further layers (34, 37) of fibrous material are applied, the hollow section is heated and the plastics material in the first layer of fibrous material (20, 21) is cured.
Patent DK-92987-A (DK)
Inventor: SEIB PAUL A
IPC: A23L33/15
Filed: 1987-02-24
Abstract: A previously unknown, stable derivative of ascorbic acid, i.e. ascorbate-2-polyphosphate, together with a process for synthesizing it at a high yield. The process preferably comprises steps in which an ascorbic acid, such as L-ascorbic acid or a derivative thereof, such as 5,6-O-isopropylidene-L-ascorbic acid, is reacted with salts of metaphosphoric acid in an aqueous system and in the presence of sufficient base to maintain the pH of the reaction mixture at a level of at least greater than 9 in order to obtain 2-polyphosphylation of the ascorbic acid. In specially preferred embodiments, 1 M L-ascorbic acid is reacted in water with 1.5-3 equivalents of sodium trimetaphosphate or potassium trimetaphosphate at a temperature of 25-55 degree C, and an alkali metal hydroxide, such as potassium hydroxide, is added at intervals to the reaction mixture, as required and over a reaction period of 1-10 hours, in order to keep the pH of the reaction mixture at a level of approx. 10.5-12 during the whole of the reaction. After utilisation, the reaction mixture does not contain any harmful or toxic materials and the whole mixture can be added to foodstuffs for animals or humans. Pure salts of ascorbate-2-triphosphate can be isolated readily by using conventional chromatographic technology. It has also been found that the compound according to the invention are more difficult to oxidise and liberate ascorbic acid more slowly, and are hydrolysed more slowly, than is the monophosphate derivative of ascorbic acid.
Patent EG-19787-A (EG)
IPC: C25D13/00
Filed: 1992-12-23
Granted: 1996-01-31
Abstract: This multilayer coating (5) comprises at least one conversion layer (3) and a synthetic resin layer (4). Application to the components of a water system requiring very good corrosion resistance. <IMAGE>
Patent FR-1455645-A (FR)
Inventor: SCHNELL HERMANN
IPC: C08L69/00
Filed: 1965-11-26
Granted: 1966-10-14
Abstract: Polycarbonates containing polyurethane blocks are made by reacting (a) a linear polyurethane substituted on the nitrogen atoms by alkyl, cycloalkyl or aryl radicals, or derived from piperazine, and containing reactive end groups with (b) a polycarbonate of a dihydric phenol containing reactive end groups or the ingredients necessary to produce such a polycarbonate. Preferably, the copolymer contains 0.01 to 10 mol. per cent of a polyurethane of molecular weight 1500 to 30,000.  The process may comprise reacting a disecondary amine with phosgene or a bischloroformate of a dihydric phenol to produce a polyurethane with chloroformate end groups and either (i) reacting this with a dihydric phenol and phosgene or a bischloroformate of a dihydric phenol or (ii) reacting the polyurethane with a monohydric compound to convert the chloroformate end groups into carbonate ester groups and thereafter reacting the polyurethane with a polycarbonate or the ingredients necessary to produce the same by transesterification.  Part of the dihydric phenol component of the polycarbonate may be replaced by an aliphatic or cycloaliphatic dihydric alcohol.  In Examples (1)-(6), a polyurethane made by reacting bisphenol A bischloroformate with piperazine, N:N1 - diisopropyl hexamethylenediamine or N:N1 - dicyclohexyl hexamethylenediamine was reacted with bisphenol A, phosgene and p-tert.-butylphenol.  In Examples (7) and (8) a polyurethane obtained by reacting N:N1-dicyclohexyl hexamethylenediamine with the bischloroformate of bisphenol A was reacted with phenol and the product reacted either with bisphenol A and diphenyl carbonate or with a polycarbonate of bisphenol A with phenolic end groups.
Patent GB-1496211-A (GB)
Title: Forming hinged containers
IPC: B65B5/06
Filed: 1975-01-03
Abstract: 1496211 Sheet forming a container lining BRITISH & FOREIGN TOBACCO CO Ltd 3 Jan 1975 [18 Jan 1974] 178/75 Addition to 1335683 Heading B5A A sheet 50 of PVC is vacuum formed or pressed to give a blank as shown in Fig. 1. The projections 60, the pair of walls 57, and the lip 50 are trimmed away, and a line of weakness formed at 61. The resulting article is an inner container component for a cigarette packet as described in the parent Specification, and having a pair of trays 52 open-ended at their nearest walls 57, and interconnected by a hinged web 51. Margins 54, 56 and skirts 59 are provided.
Patent GB-537786-A (GB)
Title: Improvements in or relating to rotating gun turrets for aircraft
IPC: F41A9/54
Filed: 1940-01-04
Abstract: 537,786. Aircraft gun mountings. AEROPLANI CAPRONI SOC. ANON., and LANCIANI, E. Jan. 4, 1940, No. 259. Convention date, Jan. 4, 1939. [Classes 92 (i) and 92 (ii)] In a ring type gun mounting for aircraft the gun 4 is fast with a drum 4 trunnioned in a diametral bolster 3 connected to the trainable ring 2, the gun being fed by an ammunition belt which passes through the hollow elevational trunnion formed by the drum. In the form shown, the drum rotates on ball bearings 16 in the bolster 3 and the belt is fed through a guide 20 at one end of the drum, the other end being closed by a cover 21 having an opening 22 through which the empty belt is guided. The air pressure on the part of the gun protruding from the turret x is counterbalanced by a member 6 shaped like the gun and moved by gearing 23, 24 in synchronism therewith. The trainable ring 2 is supported on the fixed ring 1 by two series of rollers 8 mounted respectively on vertical and horizontal axis pins.
Patent GB-215286-A (GB)
Title: Improvements in exhaust silencers
IPC: F01N1/12
Filed: 1923-02-14
Abstract: 215,286. Maxim, H. P. Feb. 14, 1923. Exhaust-silencers.-A silencer comprises in one form, Fig. 1, a series of units assembled side by side in a cylindrical casing 40 having an inlet 39 and an outlet 42 at the ends, each unit comprising an end wall 47 and a substantially spiral rib 48 co-operating with the wall 47 of the adjacent unit to form a winding passage leading from the periphery to the centre of the unit. The first unit is closed at the centre 53, so that the gases pass from the periphery of the expansion chamber 43 through the annular space 52 and the winding passages to the central chamber .52' and the outlet 42. The units are secured to the end wall 45 by tie bolts 44 and bolts 46 engage one of the units to relieve the tie bolts of the weight of the units. In a modification, Fig. 3, a series of coaxial shells 62 each form one turn of a spiral and are provided with ribs 65 forming a series of spiral channels. The innermost shell 63 forms 1¢ turns of the spiral and is closed at the end 68. The shells are supported by bolts 69 and by projections 70 on the casing. The exhaust gases pass from the inlet 58 and expansion chamber 61, between the projections 70 to the annular space 72, and through the spiral channels to the central space 67 and the outlet 59. Specification 214,770 is referred to.
Patent GB-847617-A (GB)
Title: Improvements in or relating to the production of fibrous webs from synthetic fibres
Filed: 1957-01-03
Abstract: Gelatinous precipitates are formed by slowly mixing aqueous solutions of (a) a water-soluble salt of a long chain aliphatic sulphate and (b) a water-soluble salt of a long chain aliphatic quaternary ammonium compound.  Examples of (a) are sodium or potassium lauryl sulphate, sodium octyl sulphate, or sodium decyl sulphate, and examples of (b) are lauryl or cetyl pyridinium chloride, octadecyl trimethyl ammonium chloride, or a dimethyl dialkenyl quaternary ammonium compound of the formula: (CH3)2 [CH3-C(CH3)2 - CH-C(CH3)2 - CH2 - CH = CH - CH2]2 N+ Cl.-  Two or more of the compounds (a) or (b) may be used.
Patent GB-1140331-A (GB)
Title: Improvements in or relating to doors
Inventor: HALLETT FRANK EDWARD JOHN
IPC: E06B3/72
Filed: 1966-01-04
Abstract: 1,140,331. Door panels. WESTLAND ENGS. Ltd.. 29 March, 1967 [4 Jan., 1966], No. 361/66.:Heading E1J. A metal door 10 has a lattice structure 11 bounded by a rigid framework 13, 13, 14, 14 provided with holes to insert peripheral extensions of the elements 12, which are then preferably bent over, the frame members 13, 14 being then permanently secured together. The members 13, 14 are fabricated separately, their longest marginal portions having flanges. These portions are bent inwardly to form U- channels, the face of the flange at right angles to the door plane having the holes. The members 13, 14 are joined in an overlapping manner (Fig. 3 not shown) and are strengthened by members 19, 20 forming mountings for the door support attachments. The structure 11 has bracing members 21.
Patent GB-451829-A (GB)
Title: Improvements in or relating to furnaces for solid fuels
IPC: F23L15/04
Filed: 1935-08-24
Abstract: 451,829. Air supply to furnaces. COENEN, E. J.-B., 256, Avenue Van Volxem, Brussels. Aug. 24, 1935, No. 576/36. Convention date, April 4, 1935. Divided application. [Class 51 (i)] A conduit 29 connecting a solid fuel furnace to a central heating boiler or other heating apparatus is surrounded by a jacket 30 and between the conduit and the jacket are radial gills or ribs 29a arranged with their ends staggered in the longitudinal direction so that air under pressure which is fed into the space between the conduit and jacket at 32 is divided into two streams which traverse zigzag paths and unite at a point diametrically opposite the inlet 32 and in front of an opening 33 through which the now heated air passes into the conduit to mix with the combustion gases passing to the heater. The air is fed to the inlet 32 through a pipe 31 having a non-return valve 34. In order to be adjustable for heating apparatus of different heights the conduit 29 is attached to a plate 37 slidably mounted in guides 38 on the back of the boiler.
Patent GB-538680-A (GB)
Title: Improvements in and relating to apparatus for drying sheet material
IPC: D21F13/00
Filed: 1940-01-11
Abstract: 538,680. Drying apparatus. PAPERCRETE, Ltd., and NEWBOULD, M. G. R. Jan. 11, 1940, No. 649. [Class 34 (ii)] Apparatus for drying sheets of cellulose pulp comprises a number of superposed corrugated or flat steam heated platens 1 so supported in a frame 9 that they may be lowered one at a time on to a base 10 to allow the insertion of sheets between successive platens. The base is. supported by truck 11 on the platform of a hydraulic ram 13, which is raised or lowered to bring the sheets into position for delivery to a conveyer. The platens are supported in'their raised position by lugs 24, 25 on rotating cylinders 18, 19. While the lugs 25 on the cylinder 19 is supported the lowermost platen, the cylinder is lowered by the admission of pressure fluid below a piston 26, the next platen being in the meantime. supported by the lug 24 on the cylinder 18. Upon further rotation of the cylinders, the lugs are brought into position to lower the next platen. The platens may consist of spaced tubes connected to headers and covered with gauze or like reticulated material.
Patent GB-181045-A (GB)
Title: A circular shaped disc mudguard and dust guard for the wheels of vehicles
IPC: B60B7/00
Filed: 1921-11-01
Abstract: 181,045. Jeannette, R. F. Nov. 1, 1921. Mud-guards rotating with wheels. - A lateralsplash guard for vehicles comprises an inner hub a adapted to be mounted on the hub cap of the wheel and connected by spokes b to an outer ring c, which is provided with a brush d or like flexible edge, or is formed completely of rubber or like resilient material.
Patent GB-123128-A (GB)
Title: Improvements in and connected with Steam Generators.
IPC: F22B21/14
Filed: 1918-01-12
Abstract: 123,128. Stirling Boiler Co., and Mackay, H. J. S. Jan. 12, 1918. Water-tube boilers; partitions in water space. -In a boiler having lower drums connected to an upper drum by banks of inclined tubes enclosing between them a furnace space, banks of tubes C of the Stirling type arranged to enter the cylindrical drums radially are symmetrically dispcsed about a line through the longitudinal axes of the associated drums, and each bank is divided into three passes for the furnace gases by two baffles E, F. Each lower drum is fitted with an imperforate diaphragm H arranged to divide the tubes of the central pass, whereby a positive circulation through the tubes is ensured. In a five-drum boiler with banks of tubes enclosing two furnace spaces, the central lower drum is divided into three compartments by two imperforate diaphragms. Plates K in an upper drum partition off the hottest water from the incoming water, which is supplied through the usual feed troughs L.
Patent GB-407801-A (GB)
Title: Improvements in and relating to the treatment of ammoniacal liquor
IPC: C02F1/04
Filed: 1933-01-10
Abstract: 407,801. Separating and purifying ammoniacal liquors. HOLMES & CO., Ltd., W. C., and COOPER, C., Whitestone Iron Works, Huddersfield. Jan. 10, 1933, No. 797. [Class 55 (ii).] Ammoniacal liquors are treated firstly by extraction with a water-immiscible solvent for phenols, then with adsorbent charcoal to extract the remaining phenols and subsequently by steam distillation to remove free ammonia, the liquors being finally concentrated by heating so that mechanical energy is recovered from the steam which is condensed substantially uncontaminated. The final concentration is effected by indirect steam heating, the steam produced passing through a low-pressure turbine. Specifications 372,399 and 392,560 are referred to.
Patent GB-1206502-A (GB)
Title: Integrated graetz rectifier arrangement
IPC: H01L21/82
Filed: 1968-01-05
Abstract: 1,206,502. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGS - G.m.b.H. 5 Jan., 1968 [7 Jan., 1967], No. 853/68. Heading H1K. The four diodes of a rectifier bridge are assembled in an integrated semi-conductor structure comprising a semi-conductor substrate 1 of a first conductivity type, two distinct regions 2, 3 of the opposite conductivity type formed therein, and two further regions successively of the first and second conductivity types formed in or on both of the two regions of the opposite type, contacts being made to the substrate, to each of the further regions of the second conductivity type and to metal layers respectively bridging each of the junctions between the distinct regions of the opposite conductivity type and the further regions of the first conductivity type. In the arrangement illustrated a mesa P-N structure is formed upon each of the N-type regions 2, 3 formed within the P-type silicon substrate 1 and is joined thereto by a molyb - denum or titanium-silver-titanium laminate film 7, 6 respectively. The films 6, 7 are formed by masking and vapour deposition after the formation of the regions 2, 3 by conventional masking, etching and diffusion techniques. Gold or platinum layer 20 is applied to the other surface of the body 1. Layers (8), (9), Fig. 2 (not shown) respectively of P and N-type are then deposited epitaxially from a gas stream over the whole of the upper surface of the body 1 and discrete aluminium layers 10, 11 deposited thereon. The layers (8), (9) are subjected to a selective etching process in which the layers 10, 11 serve as masks thus resulting in the two mesa structures illustrated. A silicon-oxide protective layer is formed over all the exposed semi-conductor surfaces. Protective regions 4, 5, tending to reduce breakdown in the curved areas of the junctions between regions 2, 3 and the body 1 are formed simultaneously with the regions 2, 3. In a second embodiment, Fig. 4 (not shown) the arrangement is formed as a planar structure in which firstly a P-type and then an N-type region is let into each of the regions 2, 3. Further protective regions corresponding to protective regions 4, 5 are formed around each of the second N-type regions. A metal layer overlies and bridges the junction between each first N-type region and the P-type region formed therein. The interconnections between the electrodes needed to realize the rectifier bridge may be formed as conductive tracks over the silicon-oxide insulation covering the exposed portion of the semi-conductor. A plurality of similar devices is preferaby formed simultaneously in a large semi-conductor wafer and the wafer then divided into individual elements.
Patent GB-207415-A (GB)
Title: Improvements in and relating to machines for coating sweetmeats
IPC: A23G3/22
Filed: 1923-01-10
Abstract: 207,415. Sonsthagen, A. Jan. 10, 1923. Coating confectioners' goods.-In a coating- machine wherein the coating-material falls from a slot in a trough to which it is elevated by a known arrangement of revolving drums and scrapers, the trough is constructed to allow of regulation of the area of the discharge slot, the trough is readily removable from the machine and an agitating member projects into the slot which is thereby kept clear. The sides 1<a>, 1<b> of the trough 1 are pivotally mounted and are adjusted respectively by links 19, 20 and handle 23, and a screwed bar 25, nut 26 and a plate secured to the side 1<b>. The stud connecting the links 19, 20 passes through a slot in a bracket and is clamped by a lock-nut. The slot-clearing member 7 is a bar of inverted Y-shape, whereby a double stream of coating-material is produced, and is mounted on pivoted arms having projections 11 which bear on rotary ratchet-wheels 12. Means may be provided to reciprocate the member 7 transversely of the slot or both transversely and vertically. The end walls of the trough are provided with triangular socket projections 31, 32 which, together with the sloping side of a strengthening-rib 34. engage triangular projections on the machine casing at one end and on a transverse bar at the other end. The distance between the trough and the core-conveyer may be varied.