baber/WOPTO huggingface dataset:
Patent EP-0359404-A2 (EP)
Inventor: MOBLEY KENNETH
IPC: G11C14/00
Filed: 1989-08-15
Abstract: A ferroelectric memory cell (10) has one capacitor (12) isolated from bit lines (14,16) by two transistors (18,20), one on each side. The cell is read by pulsing the capacitor in one direction, then the other, storing developed charge on other capacitors or the like, and comparing voltages.
Patent EP-0371764-A2 (EP)
Inventor: HARRINGTON STEVEN J
IPC: H04N1/52
Filed: 1989-11-28
Abstract: Simulated color imaging using gray level patterns produced from two differently colored materials by employing fine patterns of dots. The dots blend with the background and yield a gray or colored appearance when seen from a distance. The imaging process utilizes ink pattern designs in conjunction with registered two-color imaging to thereby form simulated color images. Digital information representing two sets of gray-level producing patterns, set A for color A and set B for color B, is electronically stored in computer memory. The patterns in set B are complementary to those of set A. An apparent or simulated color image is produced by overlaying, combining or juxtapositioning a pattern from set A with a complementary pattern from set B, the combined image being subsequently rendered visible using two different colorants. A gray level pattern is produced for each elemental area of an original image.
Patent EP-0376613-A2 (EP)
Inventor: WADA MITSUO
IPC: C08G63/682
Filed: 1989-12-20
Abstract: A halogenated polyester composition having improved impact resistance, rigidity and flame retardancy is produced by melt-kneading (A) 99 to 40 weight parts of a halogen-containing aromatic polyester and (B) 1 to 60 weight parts of (B-1) a copolymer of an alpha-olefin and glycidyl ester of an unsaturated acid or (B-2) a graft copolymer of (B-1) and a polymer of units of the formula (1):
       
 solidifying the molten mixture by cooling and for at least one hour in an inert gas atmosphere or under a reduced pressure of less than 1.33 kPa (10 torr) and at a temperature greater than 120°C but not greater than the melting point of the mixture, thereby to effect the solid phase reaction.
Patent EP-0342164-A2 (EP)
Inventor: NICOLETTI FRANCESCO
IPC: E05B15/02
Filed: 1989-05-02
Abstract: A closure device for shutters comprises a lock (12) which is fixed to the bottom of the shutter (10) and is provided with a movable, hook-shaped locking element (18) which projects downwards and is adapted to cooperate with a seat (32) formed in the sill (P).
Patent EP-0379197-A2 (EP)
Inventor: KAJIWARA KENICHI
IPC: F04D29/22
Filed: 1990-01-18
Abstract: A pump impeller manufactured by press forming of steel plate and comprising a boss (13) formed with a central bore for connecting the boss (13) to a main shaft (12) of the pump through key and key way engagement, and a main shroud (11) fixed to the boss (13) is disclosed. The impeller is characterized in that the boss (13) is formed with a polygonal portion (13c) on the periphery of the boss (13) and the main shroud (11) is formed at central portion thereof with a polygonal recess fitting to the polygonal portion (136) of the boss (13). A retainer plate (14) is mounted on the boss (13) at an end portion thereof opposite to an end portion from which the main shroud (11) is fitted to the boss (13) and is connected by welding to the main shroud (11).
Patent EP-0391144-A2 (EP)
Inventor: ERNST WOLFRAM DIPL-ING
IPC: H03L7/26
Filed: 1990-03-21
Abstract: To satisfy more stringent requirements for the frequency stability of the clock supply to a clocked electrical system, it is known to use a high-precision oscillator instead of a previously used crystal oscillator, but this is very costly and space-consuming. The novel method provides the possibility for providing a clock supply which is inexpensive and satisfies the requirements placed on the frequency stability. When the external reference frequency fails for a relatively long time, a system-internal frequency standard is switched on which is spatially separate from the clock device. After a certain heating-up time, the natural frequency of the frequency standard is switched through to the clock device as an internal reference frequency. <IMAGE>
Patent EP-0390131-A2 (EP)
Inventor: HARTMANN HELMUT DR
IPC: F23J15/06
Filed: 1990-03-29
Abstract: The invention relates to a process for the conversion of substrates, such as for example sewage sludges and/or industrial sludges, domestic waste and similar wastes containing organic fractions, where, in addition to coke-like solid fuels and conversion gases, an oil/water mixture is also obtained. According to the invention, the oil/water mixture contaminated with hazardous substances, optionally after removal of fatty acids, is subjected, for complete destruction of the harzardous substances, to thermal postcombustion at at least 850 DEG C, at least 1,200 DEG C if polychlorinated hydrocarbons (e.g. dioxins or furans) are present and the exhaust gases from the postcombustion, optionally after cooling with heat recovery, are passed into the atmosphere after final purification with removal of sulphur and/or nitrogen. <IMAGE>
Patent EP-0394762-A2 (EP)
Inventor: HUEBNER DIRK DR
IPC: G03C7/392
Filed: 1990-04-11
Abstract: The increased magenta fog arising in a colour-photographic recording material when pyrazoloazole couplers are used, is reduced if simultaneously a compound of one of the formulae II and III is used: <IMAGE>  in which:  R<4> is alkyl, alkoxy, aryl, amino or acylamino,  R<5> is alkyl,  R<6> is alkyl, alkoxy, aryl or a heterocyclic group,  R<7> is alkyl, aryl or a heterocyclic group, or R<5> together with R<6> forms a radical for completing a 5- or 6-membered ring,  V is -CN, -CF3, -SO3H, alkylsulphonyl, sulphamoyl or acylamino,  W is halogen, alkyl or alkoxy,  s is an integer from 1 to 3 and t is 0 or an integer from 1 to 4, with the proviso that s + t </= 5.
Patent EP-0400314-A2 (EP)
Inventor: CHANDLER DONALD G
IPC: H04J13/00
Filed: 1990-04-14
Abstract: The spread spectrum digital communication system includes data input devices for generating digital information signals to be transmitted using radio signals. A chip stream generator converts the data bits into chip streams that are either complemented or not complemented via an exclusive-OR gate, depending on the data bits. A scrambler further randomizes the chip stream for transmission. The receiver includes a descrambler and a correlator or digital matched filter for detecting the data signal. A modified receiver includes a sampler for sampling the scrambled signal at a rate which is the multiple of the chip rate thereby eliminating any need for recovering the chip clock. Another modified version includes a receiver having means for generating multi-level signals indicating the quality of the probable detection.
Patent EP-0400316-A2 (EP)
Inventor: ERBER ALFRED J
IPC: B42C3/00
Filed: 1990-04-19
Abstract: The invention relates to a method and apparatus for forming mailers from continuous webs (2A, 3A) of materials, wherein knurls or impressions (26) are provided along the length of the widthwise glue lines (23) used to form the continuous webs (2A, 3A) into closed envelopes (9) defining the mailers so as to inhibit "tenting".
Patent EP-0406779-A2 (EP)
Inventor: HOFFMANN HANS-RAINER DR
IPC: A01G7/06
Filed: 1990-07-03
Abstract: The invention relates to a device for the delivery of systemic active substances to plants, composed of a backing layer and a storage tank for the active substance, which is characterised in that the storage tank for the active substance is mouldable and can be matched to uneven surfaces, and in that it is suitable for the delivery of active substances through the surfaces of plants which are composed of secondary, hardened epidermal tissues and which are not covered by a cuticula.
Patent EP-0432361-A2 (EP)
Inventor: BARTELINK DIRK J
IPC: H01L23/12
Filed: 1990-08-08
Abstract: A multi-chip, self-aligning, integrated circuit flip-chip assembly (300) using flexible connection assemblies (400) for its attachment is enclosed in an integrated circuit package (100). The connection assembly (400) contains connection pillars (376) which are attached to die (104) and carrier wafer (102) by means of flexible membranes (370) covering cavities (368). Each pillar consists of two opposing connection posts, (222) of die (104) and (216) of carrier wafer (102), joined by solder bump (228). A post is formed by etching a ring into the dielectric around predefined metal islands (342 or 226, 346, 348 and 350) provided by the process, which are interconnected by vias (354, 356 and 358) respectively to form conductive core (374). The conductive path established between first layer metal interconnects (342) and (226) via connection pillars (376) furnishes the electrical interface between chip and carrier in the flip chip arrangement. Flexure of the membranes allowed by the air filled cavities enables connection pillars (376) to tilt, so as to relieve the assembly of shear strain when subjected to differential thermal expansion. A membrane prober (500), using test metal bumps (582) in place of solder joints (228) but which is otherwise identical to flip-­chip assembly (300), can be interfaced with a tester to perform conventional vector testing of individual chips (104) or complete multi-chip assemblies. Alternatively, test assemblies with metal bumps can be configured as "system-emulators" for testing individual production chips, by providing a test environment that accurately represents the full system. This test method dispenses with the many technical drawbacks and high costs associated with conventional vector testing, including the loading by the low tester impedance.
Patent EP-0428853-A2 (EP)
Inventor: RIEGE HANS DR
IPC: H01J1/30
Filed: 1990-10-05
Abstract: A source for pulsed electron beams is described, which is excited to produce emission over a large area and its pulse frequency, energy and current intensity can be modulated as a totality or individually. The cathode can be used as an electron gun for applications in accelerators and free electron lasers and also in high-power radio-frequency and cathode ray tubes. The applications as a modulated Gigahertz source and as a source for parallel image information processing in compact cathode ray tubes can be named as the main features. <IMAGE>
Patent EP-0429886-A2 (EP)
Inventor: GRUBER HERMANN DR
IPC: C08L33/06
Filed: 1990-11-03
Abstract: Aqueous polymer dispersions containing a maximum of 22% by weight of organic solvents and containing from 30 to 60% by weight of dispersed polymers, these polymers being composed of from 20 to 80% by weight of chlorinated polymers and from 80 to 20% by weight of nonchlorinated polymers, are prepared by first preparing a water-in-oil emulsion of an organic solution of the chlorinated polymer and subsequently combining this, by mixing, with an aqueous dispersion of the chlorine-free polymer to give an oil-in-water dispersion, and are used, in particular in blends with aqueous bitumen emulsions, for the production of coating compositions for substrates of any desired type.
Patent EP-0432674-A2 (EP)
Inventor: MUELLER FRED-EGON DR
IPC: H03D9/06
Filed: 1990-12-08
Abstract: A modulator suitable for 16 quadrature amplitude modulation (QAM) is designed as a double modulator (1), wherein a 16 QAM modulator (39) consists of two double modulators (1). One double modulator (1) has two partial modulators (1',1'') forming a bridge. Each partial modulator (1',1'') has two possible transmission paths: (6',6'') with a phase delay line (39',39'') which causes a 180 DEG  phase shift. On each of the two paths (6',6'', 7',7''), a semiconductor diode (D1',D1'',D2',D2'') is disposed in such a way that they provide the carrier (Uc) with a 180 DEG  phase inversion and are accordingly rendered conductive in unison, if no modulation voltage (Um) is applied, whereby the carrier is suppressed at the signal output (3'). When a modulation signal (Um) is applied, the balance is changed to push-pull, and one of the two paths (6',6'') assumes less impedance compared to the other path (7',7''), which leads to the generation of the modulated carrier voltage (Umc). Through its design as a double modulator (1) such that the transmission path is realized respectively via an electrically short path (7',7'') of one partial modulator (1',1'') and via a phase delay path (6'',6') of the other partial modulator (1',1'') or conversely, differences in the two paths are averaged. The double push-pull modulator (1) is used in radio link systems. The modulator (1) can also be used as a mixer.
Patent EP-0393753-A2 (EP)
Inventor: GERGEN WILLIAM PETER
IPC: C08L73/00
Filed: 1990-04-10
Abstract: Polyketone polymer composition comprising (a) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, and (b) a partial non-alkali metal salt of a polymer of an α-olefin, an unsaturated carboxylic acid, and optionally a third monomer; and a process for its preparation.
Patent EP-0408179-A2 (EP)
Inventor: REESER HAROLD G
IPC: G01S19/07
Filed: 1990-05-21
Abstract: A system (18) for characterizing contamination levels of a selected site (22) uses a base station (12) for the collection of data and generating waste site characterization and remediation needs reports. An on-site station (14) is provided to detect the contamination levels at selected points (24) within the site (22) and transmit this data to the base station (12). The on-site station (14) also includes a transceiver which relays information to the base station (12) from the Global Positioning System satellite constellation (20, 20a, 20b, 20c) which pertains to the precise location of the on-site station (14) within the site (22) to be characterized. The base station (12) may also have a specific transceiver which is in communication with the Global Positioning System satellite constellation (20, 20a, 20b, 20c) for determining the precise topographical position of the base station (12) and for correlating this data with the topographical position of the on-site station (14) to refine the latter. Both the on-site station (14) and the base station (12) include transceivers which permit communication between these stations for the purpose of directing and refining field operations.
Patent EP-0427376-A2 (EP)
Inventor: BRESLAU BARRY RICHARD
IPC: B01D63/02
Filed: 1990-07-25
Abstract: An improved separation system and its method of operation for the separation of solutes, colloidal particles, and/or suspended matter from solutions or suspensions containing the same is disclosed. In a preferred embodiment, this invention is concerned with a simple and economic membrane filtration system that can be operated in many of the modes of operation of a membrane filtration system, especially suction backwashing, without mixing the filtrate with the feed stream.
Patent EP-0421728-A2 (EP)
Inventor: AITKEN DEREK
IPC: H01J37/317
Filed: 1990-10-02
Abstract: Apparatus for presenting target elements (16) such as semi-conductor wafers to an ion beam (13) for ion implantation comprises a support rotor (19) for carrying the targets (16) on support bases (21) mounted on arms (22) extending radially from a core structure (20) of the rotor. The target elements (16) are rotated by the rotor (19) through the ion beam to produce scanning across the target elements. Each support base (21) is rotatable about the radial axis of its support arm. The rotation of the base (21) allows adjustment of the ion implantation angle. The implantation normally takes place with the target vertical and the axis of scanning rotation horizontal. Each support base (21) is also rotatable through 90° to allow loading and unloading of target elements while the support base is horizontal. Good thermal contact is made between the target element and the support base by an intervening sheet having upstanding flaps (61) which are urged outwardly into contact with the element (16) by the effect of centrifugal force.
Patent EP-0430579-A2 (EP)
Inventor: BEHR FREDERICK E C O MINNESOTA
IPC: C07C309/80
Filed: 1990-11-22
Abstract: Fluorine-containing compounds comprising fluoroaliphatic-group-substituted esters derived from
     (A) ethylenically unsaturated ester comprising a residue of an aliphatic polyol compound substituted with at least one acyl group derived from an ethylenically unsaturated fatty acid, said acyl group having at least one non-terminal carbon-carbon double bond, and   (B) fluoroaliphaticsulfonyl chloride or bromide compound.
Patent EP-0420829-A2 (EP)
Inventor: MARTINSSON INGEMAR
IPC: B60K31/00
Filed: 1990-09-03
Abstract: This invention relates to a length adjustment device for adjusting predetermined maximum or minimum playless distance between two points (A) and (B). Known devices of this kind re­quire visual inspection during the adjustment. The invention avoids the necessity of visual inspection by arranging a pro­truding means (52) at the end surface of the adjustment screw (5). This protruding device (52) interacts with a slot (23) in one of the longish elements (2,3), which are pivotally co-­joined and form the actual length adjustment device (1).
Patent EP-0443450-A2 (EP)
Inventor: KATAGIRI SHINGO C O FUJI PHOTO
IPC: G11B23/087
Filed: 1991-02-15
Abstract: A magnetic tape cassette including a pair of hubs which are rotatably supported in an internal opening defined between upper and lower half portions of a body of the cassette and on which a magnetic tape is wound, and friction sheets provided between the tops and bottoms of the hubs and the upper and lower inside surfaces of the cassette. Each of the sheets includes projecting portions having substantially rectangular cross sections and extending substantially in a longitudinal direction of the sheet so that the protruding portions reach both ends of the sheet and at least two hub holes are located between the protruding portions. At least one side edge of the top of each of the protruding portions is wavily curved, and the width of each of the protruding portions is relatively small at both ends of the protruding portion. The hubs and the tape are supported by tops of the protruding portions.
Patent EP-0450627-A2 (EP)
Inventor: SONE TAEKO
IPC: C12N9/44
Filed: 1991-04-04
Abstract: A novel detergent composition containing an alkaline pullulanase is disclosed. The alkaline pullulanase has its optimum pH in an alkaline range and not deactivated by surfactants. Further it has strong resistance to almost all detergent components such as chelating agents, protease, etc. 
     The the detergent composition of this invention has excellent detergency especially against starch soils.
Patent EP-0453863-A2 (EP)
Inventor: TRAVAGLIO MARK A
IPC: H04L12/433
Filed: 1991-04-09
Abstract: An interface system for transferring information between a local area network and a system memory associated with a station attached to the network. The interface system includes a bus interface unit (10) for implementing the transfer of information between the interface system and the memory system. An indicate module (12) transfers information received by the interface system from the network to the memory system via the bus interface unit. A request module (14) transfers information received by the interface system from the memory system via the bus interface unit to the network. A status generation/space management module (16) connected to the indicate module and to the request module monitors the status thereof and generates corresponding status signals and manages the allocation of storage space in the memory system for information transferred between the network and the memory system via the interface system.
Patent EP-0467348-A2 (EP)
Inventor: MIYAGAWA YASUMICHI
IPC: C08F20/32
Filed: 1991-07-17
Abstract: An acrylic copolymer rubber which is a random copolymer of
     (A) a cyano group-containing acrylate or methacrylate of the following formula (I):
       
wherein R 1  is hydrogen or methyl, and R 2  is -C n H 2n - or -CH 2 CH 2 -O-CH 2 CH 2 -, wherein n is an integer of from 2 to 4,   (B) at least one of ethyl acrylate and n-butyl acrylate, and   (C) at least one of glycidyl methacrylate and allyl glycidyl ether, or vinyl chloroacetate,     
wherein the amounts of units derived from the above (A), (B) and (C) in said copolymer are from 5 to 70% by weight, from 20 to 94.5% by weight and from 0.5 to 10% by weight, respectively, and which has a Mooney viscosity ML 1  + 4  (100° C) of at least 5.
Patent EP-0482565-A2 (EP)
Inventor: SUE JINJEN ALBERT
IPC: C25F5/00
Filed: 1991-10-21
Abstract: An electrolytic process for stripping a group IVB or VIB metal coating compound from a titanium based metal substrate using an aqueous electrolyte comprising an oxidizing reagent and an acid with a solution pH of less than 4.5.
Patent EP-0487914-A2 (EP)
Inventor: FOOTE WAYNE E
IPC: G11B21/21
Filed: 1991-10-29
Abstract: A load beam (14) for incorporation into a disk drive is provided with an arm attachment area (17) at one end and a resilient magnetic head attachment (16) at another end, the head attachment (16) located coincident with the load beam's axis of suspension (32). The load beam (14) is formed from an elongated thin metal sheet and has a flex region (17) and a mid-region (20). The mid-region (20) comprises a pair of elongated ribs (22, 24) formed along opposing edges of the metal sheet and has a convex design (50, 52, 54, 56, 58, 60) formed between the ribs to provide added stiffness to the mid-region (20). A number of formed surfaces are disclosed.
Patent EP-0436502-A2 (EP)
Inventor: LAMBEIR ANNE-MARIE VIRGINIE RE
IPC: C12N9/92
Filed: 1991-01-02
Abstract: A method for selecting amino acid residues is disclosed which upon replacement will give rise to an enzyme with an altered pH optimum. The method is specific for metalloenzymes which are inactivated at low pH due to the dissociation of the metal ions. The method is based on altering the pK a  of the metal coordinating ligands or altering the K ass  for the metal binding. New glucose isomerases with an altered pH optimum are provided according to this method. These altered properties enable starch degradation to be performed at lower pH values.
Patent EP-0469672-A2 (EP)
Inventor: FALGER FRIEDRICH DIPL-ING
IPC: B23B27/16
Filed: 1991-07-23
Abstract: The invention relates to a rotating cutting tool for high-speed machining, with one or more interchangeable cutting inserts (2) fastened to the basic tool body (3). The common bearing surfaces (4; 5) between cutting insert (2) and basic tool body (3) have a convex or concave central area (4b; 5b) with flat marginal areas (4a; 5a) adjacent thereto at least on one side. As viewed in section (B-B), the basic tool body (3) and the cutting inserts (2) are in contact with one another in each case at three bearing points. Here, two bearing points lie within the central areas (4b; 5b); the third bearing point lies within the flat marginal areas (4a; 5a). The convex central area (4b) of the bearing surface (4), at least in the area of the two bearing points, is the section of the circumferential surface of a circular cylinder which extends in the direction of the rotational axis over the entire central area (4b). In this way, an excellent positive-locking connection is obtained between  indexable inserts (2) and basic tool body (3), which connection absorbs a large portion of the high centrifugal forces occurring during cutting without mechanical overstressing occurring at the indexable inserts, fastening elements or parts of the basic tool body. <IMAGE>