baber/WOPTO huggingface dataset:
Patent DE-3575552-D1 (DE)
Inventor: PARKHURST M
IPC: C07C43/23
Filed: 1985-11-04
Granted: 1990-03-01
Abstract: A process for producing novel compositions including optically active molecules of nordihydroguaiaretic acid (d,1-2,3-dimethyl,1,4-bis(3,4-dihydroxyphenyl)butane) and intermediates, starting with 1,4-bis(3,4-dimethoxyphenyl)butanone, or other structurally similar composition having oxy substituents at the 3,4-phenyl positions, comprising (1) forming the corresponding butanol; (20) forming the corresponding 1,4-butane ether or siloxy composition; (3) cleaving the oxy substituent from the butane chain at the 1 and 4 positions; (4) dealkylating the phenols at the 3,4 positions to leave hydroxy substituents with hydrobromic acid reflux for 8 to 10 hours. Optical orientation is preserved throughout.
Patent DE-3584640-D1 (DE)
Inventor: KONRATH JOHN
IPC: G01N33/50
Filed: 1985-04-05
Granted: 1991-12-19
Abstract: A method for the preparation of microscope slides for immunocytochemical procedures is disclosed. The slides comprise cell or tissue specimens adhered onto polylysine-treated slides. The specimens on the slides are preserved by applying a fixative and a water-soluble overcoating, so that the slides can be easily produces and stored.
Patent DE-3650645-D1 (DE)
Inventor: NEWMAN KAREL Z
IPC: C12N/
Filed: 1986-11-24
Granted: 1997-10-09
Abstract: Isolated genomic DNA molecule having a defined nucleic acid sequence and encoding an antigenic protein (I) derived from Eimeria tenella is new. (I) has a molecular wt. of about 25000 daltons and is composed of two polypeptides joined by a disulphide bond. One polypeptide has a molecular wt. of about 17000 daltons, has a blocked N-terminal amino acid and a defined amino acid sequence. The other polypeptide has a molecular wt. of about 8000 daltons and a defined amino acid sequence.
Patent DE-3660950-D1 (DE)
Title: Propulsion system for motor vehicles, especially for motor cars
Inventor: GILKE PAUL K DIPL ING
IPC: B60B37/10
Filed: 1986-12-19
Granted: 1988-11-24
Abstract: 1. Drive means for motor vehicles, especially passenger cars, comprising a mechanical drive connection between the vehicle engine and the vehicle wheels of one of the vehicle axles and an on/off switchable additional drive for the vehicle wheels (12) of the other vehicle axle, the additional drive being a hydrostatic single-wheel drive with a fluid power motor (16) in the form of a wheel hub motor and of an axial-piston fixed-displacement motor with an inclined plate being disposed as an additional drive motor in the hub (14) of each of the vehicle wheels on the additional drive axle, and at least one fluid power pump being provided which is drivable by the vehicle engine and which is arranged to supply driving energy to the fluid power motors, there being a pressure-medium actuated clutch (18) between each of the fluid power motors and the respective vehicle wheel hub, characterised in that the clutch (18) is formed as a toothed clutch comprising a gearshift sleeve (75) surrounding the cylinder drum (65) of the fluid power motor (16) and movable in the axial direction and having at least one annular surface (90) for applying pressure and inner and outer teeth (76, 78) each extending in the axial direction, the inner teeth (76) being in constant engagement with corresponding outer teeth (77) on the cylinder drum (68) of the fluid power motor (16) and the outer teeth (78) being movable into and out of engagement with corresponding inner teeth (79) on the hub (14) of the vehicle wheel (vehicle front wheel 12).
Patent DE-3661949-D1 (DE)
Title: Paper coating apparatus and method
Inventor: GANE PATRICK ARTHUR CHARLES
IPC: B05C3/18
Filed: 1986-03-27
Granted: 1989-03-02
Abstract: A trailing blade paper coating apparatus comprises means (2, 3) providing a resilient curved surface for supporting a moving web of cellulosic material (1), an applicator for a paper coating composition, a trailing blade (11) which is biased towards and in contact with the moving web of cellulosic material (1), and a flexible blade (5) mounted so that, in operation of the trailing blade paper coating apparatus, the flexible blade (5) is in contact with a web of cellulosic material (1) to be coated at a location which is upstream relative to the trailing blade (11) and downstream relative to the applicator for a coating composition. In the method of applying a paper coating composition (9) to the surface of a moving web of a cellulosic material (1) using the trailing blade paper coating apparatus, it is preferable that the time taken for a fixed point on the web of cellulosic material (1) to travel between the line of contact with the flexible blade (5) and the line of contact with the trailing blade (11) is not longer than 15 milliseconds.
Patent DE-3663592-D1 (DE)
Title: Method and device for controlling the mark-to-space ratio of an electric signal
Inventor: SCHMITT WALTER ING GRAD
IPC: G01D5/245
Filed: 1986-03-13
Granted: 1989-06-29
Abstract: A process and apparatus for use in digital length or angle measuring systems for regulating the keying ratio of at least one periodic electrical signal. A signal is produced, proportional to the desired keying ratio, and compared with the periodic electrical signal. A momentary difference signal is generated from the comparison. If the frequency of the periodic electrical signal is within a selectable frequency range, the momentary difference signal is applied to a correction circuit, which is circuited parallel to a storage unit. The correction circuit supplies a correction signal, based on the momentary difference signal, to a sum amplifier. The sum amplifier is operative to superpose the correction signal on the periodic electrical signal, thereby regulating the keying ratio of the periodic electrical signal. The storage unit is operative to store a signal proportional to the difference signal. If the frequency of the periodic electrical signal is outside the selectable frequency, the correction signal is derived from the contents of the storage unit.
Patent DE-3663688-D1 (DE)
Title: Process and apparatus for removing alkali nitrite from salt baths containing nitrate
Inventor: KUNST HELMUT DR
IPC: C21D1/607
Filed: 1986-07-24
Granted: 1989-07-06
Abstract: Undesired nitrites are formed during the treatment of salt bath nitrided structural components of iron and steel in nitrate containing cooling baths, and they must be removed from the washing water. The build-up of nitrites can be avoided by oxidizing the nitrite in the salt bath into nitrate by passing air into the cooling bath during off-times.
Patent DE-3669788-D1 (DE)
Title: Elektrophotographischer photorezeptor.
Inventor: OTSUKA SHIGENORI
IPC: G03G5/14
Filed: 1986-10-27
Granted: 1990-04-26
Abstract: An electrophotographic photoreceptor having an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer comprising a photoconductor and an anti-oxidant having the general formula:wherein R<sup>1</sup> and R<sup>2</sup> are independently alkyl groups, is disclosed herein. The electrophotographic photoreceptor according to this invention has the improved durability in the repeated copying operation and therefore prolonged life.
Patent DE-3675867-D1 (DE)
Inventor: GEORGE FLINT R
IPC: E21B23/06
Filed: 1986-08-27
Granted: 1991-01-10
Abstract: A well tool (220), eg. a packer, a firing head or a release sub, Comprises a member (52) slidable relative to the housing (38) of the tool, to actuate the tool. A separate actuator assembly (182) is receivable in the tool and includes a chamber (219) at a pressure lower than the well pressure. Means (55; 196) are provided for applying well pressure to one side of the member and said chamber pressure to the other side of the member, to cause the member to slide to actuate the tool. Advantageously, the member (52) is a sleeve or piston.
Patent DE-3676733-D1 (DE)
Inventor: ERRECART JEAN-LOUIS
IPC: D21F1/00
Filed: 1986-03-10
Granted: 1991-02-14
Abstract: A papermaking screen has a pair of ends secured together at a joint and formed of a plurality of longitudinal warp filaments having warp ends secured together at the joint and weft filaments transversely woven with the warp filaments. One end of each warp filament is formed with a short loop extending longitudinally a short distance past the weft filaments and the opposite end is formed with a long loop extending longitudinally a long distance past the weft filaments longitudinally in line with but longitudinally spaced from the respective short loop. A first portion of the warp filaments has its long loops projecting from one end of the belt and a second portion has its long loops projecting from the opposite end of the belt between the short loops of the first portion. A first joint rod passes transversely through all of the long loops but only through the short loops of the first portion and a second joint rod passes transversely through all of the long loops but only through the short loops of the second portion. The short distance is equal to about half of the long distance.
Patent DE-3767564-D1 (DE)
Inventor: SCHEPER THOMAS
IPC: G01N21/76
Filed: 1987-04-28
Granted: 1991-02-28
Abstract: 7-Phenylacetic acid-4-alkyl-coumarinyl amides having the formula <IMAGE>  (I)  wherein R is alkyl having 1 to 4, in particular 1 to 2 carbon atoms, optionally substituted by one or more halogen atoms, in particular fluorine atoms, especially methyl or trifluoromethyl, are suitable substances for the fluorometric determination of the activity of hydrolases, in particular of penicillin G-acylase, since by the enzymatic reaction they provide cleavage products which in regard to their fluorescence properties differ drastically from those of the substrate. They can be used in processes for the fluorometric determination of the activity of hydrolases, in particular of penicillin G-acylase.
Patent DE-3778646-D1 (DE)
Inventor: TRUMBLE FRANCIS ROBERT
IPC: H01Q21/00
Filed: 1987-10-14
Granted: 1992-06-04
Abstract: An antenna has a resonant cavity 2 defined by electrically conducting plates 3, 4 and a sidewall 5, and has sixteen helical antenna elements 6 each with five turns in the helical section and a probe 7 at the opposite end, the stem of probe 7 passing through an aperture in upper plate 3 so that its end 6 is within the resonant cavity 2 common to all elements 6 in that module. Cavity 2 has a cross-section parallel to the plates 3, 4 essentially square in shape except for the presence of four inwardly-protruding buttresses 8, one situated mid-way along each side of the cavity to promote the formation of standing waves of different mode, and thereby enhance the frequency range of the array 1.
Patent DE-3778832-D1 (DE)
Inventor: BALCK JUERGEN
IPC: B24D5/12
Filed: 1987-11-05
Granted: 1992-06-11
Abstract: The internal-hole saw is partic. for parting off thin discs from a monocrystalline silicon bar. It comprises a thin blade with central hole coated along the edge with grains of diamond or boron nitride bonded galvanically. These cover both the cylindrical peripheral face of the hole and the adjacent edges. On the side of the blade (3) towards the disc (2) to be parted off the coating thickness is greater than on the other side.
Patent DE-3851628-D1 (DE)
Inventor: TOEROEK VILMOS
IPC: F24F3/16
Filed: 1988-07-01
Granted: 1994-10-27
Abstract: PCT No. PCT/SE88/00365 Sec. 371 Date Nov. 15, 1989 Sec. 102(e) Date Nov. 15, 1989 PCT Filed Jul. 1, 1988 PCT Pub. No. WO89/00355 PCT Pub. Date Jan. 12, 1989.An arrangement for transporting air, with the aid of an ion-wind, includes a corona electrode (K) at least one target electrode (M) located at a distance from the corona electrode, and a d.c. voltage source (4) connected between the corona electrode and target electrode. The arrangement includes a housing (1, 5) with an inlet opening (2) in which the corona electrode (K) is disposed centrally, and an air-flow path extending from the inlet opening and containing the target electrode (M). The target electrode is located spaced form and symmetrical with the center line through the inlet opening. The housing is configured so that the air-flow path downstream of the inlet opening (2) and the corona electrode (K) branches outwardly towards the target electrode (M), thereby forcing air entering through the inlelt opening (2) out towards the target electrode (M) and preventing at least the major part of this air-flow from continuing straight forwards along the extension of the center line.
Patent DE-3855568-D1 (DE)
Inventor: TAKAHASHI YASUNORI
IPC: G11B20/00
Filed: 1988-07-27
Granted: 1996-10-31
Abstract: A copy protection arrangement for pre-recorded videotape cassettes. The invention includes both a method of protecting and a protected videotape cassette. Copy protection is provided by recording on at least a portion of the original videotape a composite synchronizing signal including a vertical synchronizing pulse having a pulse width in the range of 1-20 micro-seconds and a pulse height discernible by a vertical synchronizing signal separating circuit of the television receiver. All other vertical synchronizing pulses in the vertical synchronizing signal partition, all the equalizing pulses in a equalizing signal partition following the vertical synchronizing signal partition and at least a part of the horizontal synchronizing pulses in a horizontal synchronizing signal partition following the equalizing signal partition in the composite synchronizing signal having respective pulse height less than a predetermined pedestal level of the synchronizing signals.
Patent DE-3865995-D1 (DE)
Inventor: CREMA ERHARD
IPC: B01D17/00
Filed: 1988-03-30
Granted: 1991-12-12
Abstract: A mobile plant  for removing contaminated liquid, such as a mixture of oil and water, is mounted on a motor vehicle. The plant consists of a collector tank (B) in which a sub-atmospheric pressure is maintained by means of a water jet pump which is supplied with water from a centrifugal pump. The contaminated liquid is drawn into the collector tank through a hosepipe. The liquid flows out of the collector tank into the separator tank (A) which has a dividing wall with a gap between the lower edge of the wall and the tank floor. A pipe (21) extends from the collector tank into the separator tank with an outlet near the separator tank floor. The part of the separator tank on the side of the separator wall opposite to the pipe has an overflow outlet.
Patent DE-3868776-D1 (DE)
Inventor: REWITZER HERBERT DIPL ING
IPC: H01H33/24
Filed: 1988-06-30
Granted: 1992-04-09
Abstract: A base plate (1) supports a pair of h.v. isolators (2). At the end of the isolators are metal discs (3,4) secured by screws (5). Located between the discs are metal spring elements (6,7). The discs are of silvered brass and the spring elements of beryllium-copper. Located between the springs are the flat terminal connectors of a reed contact switch (11). The contacts are located in a glass tube (13) and controlled by a coil assembly (14).
Patent DE-3869026-D1 (DE)
Inventor: NILSSON KENTH DIPL ING
IPC: B41J2/255
Filed: 1988-09-08
Granted: 1992-04-16
Abstract: Print heads, comprising a limited number of elements per unit of length, are arranged in parallel rows, with an edge region greater than half of the distance between neighbouring  elements. The neighbouring heads in successive rows are staggered by an amt. which is inversely proportional to an integral factor. This factor can be 3 with four print elements per millimetre. The number of elements per head is one more than the prod. of this factor and an arbitrary natural number (e.g. two). Print colours may vary cyclically in each row, and between rows.
Patent DE-3870571-D1 (DE)
Inventor: MITTELBACH HELMUT DIPL ING
IPC: G06V30/262
Filed: 1988-10-12
Granted: 1992-06-04
Abstract: The character reader uses a context lexicon in which the data string defined by the character sequence for the beginning and ends of the words are compared with stored reference strings to allow the language pattern to be verified. The context lexicon is actualised by continuous read-in of the character strings, with counting of the repetitive identical strings. The actual strings are compared with the strings of the context lexicon, the strings providing the best match selected for further evaluation. The context comparison is used for correction of the read characters via a substitation procedure.
Patent DE-3873055-D1 (DE)
Inventor: BURK ROLAND
IPC: F25B41/06
Filed: 1988-10-19
Granted: 1992-08-27
Abstract: The expansion valve control for a vehicle air-conditioning circuit uses a pair of temp. sensors (20,22) respectively detecting the temp. of the refrigerant before and after the evaporator (10) to provide a setting parameter for the expansion valve (5). A further temp. sensor (21) cooperates with the temp. sensor (20) in front of the evaporator (10), with a press drop provided by a Venturi (8) between them. Pref. the three temp. values provided by the temp. sensors (T1, T2, T3) are fed to a processor which calculates the overheating in the compressor (1) by summating the temp. difference between the first two temp. sensors (T2, T3) with the temp. difference between the second pair of temp. sensors (T, T2) multiplied by a coefficient which is specific to the evaporator (10).
Patent DE-3873366-D1 (DE)
Inventor: SIBALIS DAN
IPC: A61N1/30
Filed: 1988-02-09
Granted: 1992-09-10
Abstract: A chemical composition for electrolytic transdermal transport of a protein to the blood stream of the patient comprises:     a) a protein,   b) a cosolvent with negative Setschenow constants, and   c) water.   Some of the preferred proteins are: insulin, protamine sulfate, calcitonin, glucagon, and corticotropin. Some of the preferred dissociating agents with negative Setschenow constants are: urea, propylurea, potassium iodide, sodium perchlorate, and guanidine hydrochloride. The electrolytic device (10) containing the composition to be transdermally delivered comprises:  two electrode elements (22, 36) separated by barrier means (34),  a reservoir (24) containing the composition of the invention, an electronic/electrolytic circuit including a source of a power (28),  a cover (12), and  adhesive (36) means holding the device to the patient's skin (18). A semipermeable membrane (22) between the patient's skin and the electrolytic device is optional.
Patent DE-3873856-D1 (DE)
Inventor: BAUCHARD HUBERT BAUCHARD HUBER
IPC: B30B9/30
Filed: 1988-06-17
Granted: 1992-09-24
Abstract: Compactor system, consisting of a container (4) fed via a delivery chute (5), of a removable wall with a cross section which decreases in size slightly from the bottom towards the opening, lining the wall of the container on the inside, and of a piston (9) whose rod (18) is provided with means (8) for moving it cyclically between a low position inside the container and a high position and for exerting a compacting pressure in the low position. The container (4) is of parallelepipedal prismatic shape, the removable wall consisting of as many plane flaps (11) as the container comprises faces. <IMAGE>
Patent DE-3874016-D1 (DE)
Inventor: HUGELMANN DENIS
IPC: G07C9/00
Filed: 1988-05-25
Granted: 1992-10-01
Abstract: Automatic person identification system. The person wears a bracelet (2) with a microprocessor (5). A random signal is sent to the microprocessor (5), which codes is according to two coding keys, one personal and one renewable, and returns the coded signal. The person is identified by decoding. The bracelet (2) is provided with a fibre optic (16). Opening of the fiber optic prevents light from reaching a cell (14) and deprograms the microprocessor (5). Application to automatic access systems and to servicing on computer terminals.
Patent DE-3874826-D1 (DE)
Inventor: AYELLO JEAN-CLAUDE
IPC: G07F5/24
Filed: 1988-06-22
Granted: 1992-10-29
Abstract: The device is arranged on prepayment machines. It comprises a coin circulation corridor (1), identification means and a switching chain (5, 4, 2) for directing the coins towards a cash box (12) or a change return receptacle (11). The switching chain comprises a cylinder (5), on which a double groove is engraved and which is driven by a bidirectional motor (6). The groove is followed by a tracer (4) arranged to cause a retaining vane (2) to pivot. Depending on the direction of rotation of the motor, the coins are directed towards one or the other of the two switching tracks. <IMAGE>
Patent DE-3877274-D1 (DE)
Inventor: TANK KLAUS
IPC: B23K35/30
Filed: 1988-07-13
Granted: 1993-02-18
Abstract: A tool component comprises an abrasive compact (10) bonded to a support (12) which itself is bonded through an alloy (16) to an elongate cemented carbide pin (14). The alloy (16) has a liquidus below 900 DEG C and the following composition, by weight:    Mn      15 - 41%  Cu      67 - 41%  Ni      1 - 5%  Au      10 - 17%   and at least one of In, Sn, Zn and Ag, the In and Sn, when present, being in an amount not exceeding 20% by weight and the Zn and Ag, when present, being in an amount not exceeding 30% by weight. The shear strength of the bond achieved between the support (12) and the pin (14) exceeds 335 MPa.
Patent DE-3877698-D1 (DE)
Inventor: ELSAESSER ANDREAS DR DIPL CHEM
IPC: G03C1/72
Filed: 1988-10-29
Granted: 1993-03-04
Abstract: Radiation-sensitive mixt. is based on a cpd. (I) forming a strong acid when exposed to actinic radiation and a polymer (II) with recurring, acid-hydrolysable acetal or ketal gps. The novelty is that (II) is a reaction prod. of an organic polymer (III) with free OH gps., an organic cpd. (IV) with at least 2 NCO or epoxy gps. and a cpd. (V) with recurring, acid-hydrolysable acetal or ketal gps. and at least one free OH gp.
Patent DE-3879924-D1 (DE)
Inventor: HERBORT HANS-JOACHIM DIPL ING
IPC: B01J8/06
Filed: 1988-11-10
Granted: 1993-05-06
Abstract: In a multi-stage process for prodn. of synthesis gas contg. H2 and CO from hydrocarbon feeds, involving (a) a catalytic prim. steam reforming, (b) a partial oxidn. by means of an additive contg. O, (c) a further endothermal catalytic steam reforming, of the feed and (d) heat exchange between the gas leaving the 2nd reforming and (part of) the gas flowing through the prim. catalyst, cooling is carried out in the sec. catalyst, in such a way that the gas leaving the sec. catalyst is at a temp.  below the thermodynamic CH4 equilibrium of the exiting gas.
Patent DE-3880122-D1 (DE)
Inventor: FANNING ELLEN PROF DR
IPC: C07K1/113
Filed: 1988-09-27
Granted: 1993-05-13
Abstract: Insoluble proteins (I), expressed incultured cells, are solubilised by combining them with an ion-exchanqer (A), then sepn. from (A). Pref. (I) are produced in E coli and are contacted with (A) in the culture broth, in the presence of lysed cells and cellular debris, or after removal of such cells and debrs. (A) is used as a granular material, esp. 'q- or S -Sepharose' (RTM) and (I) are recovered from (A) by elution.
Patent DE-3880696-D1 (DE)
Inventor: HUNNICUTT JUN CLYDE J
IPC: E03D9/052
Filed: 1988-12-09
Granted: 1993-06-03
Abstract: The toilet bowl ventilating device including a lid with a base and cover forms a hollow piece with an air intake (34) for receiving odoriferous air from the bowl and an exhaust opening. A module with inlet, outlet, filter and impeller is located within the hollow in the lid to draw air through the inlet and discharge through the exhaust. The filter includes a hollow body contg. the filter material whilst a duct is connected between the hollow body and the outlet.  The hollow body has an air-pervious continuous inner side wall (72) which defines a chamber which houses the impeller mounted to produce an airflow parallel to the base. The impeller is driven by a d.c. electric motor fixed to the lid with a vertical shaft. The impeller has a number of vanes (102) and an annular flange (100) extending radially from the hub parallel to the base. A battery mounted in a compartment in the seat powers the motor.