baber/WOPTO huggingface dataset:
Patent EP-0324265-A3 (EP)
Title: High impact blends and films of linear polyethylene, polyphenylene oxide and styrene resin
IPC: C08L23/06
Filed: 1988-12-22
Abstract: Composition and films of linear ethylene polymers such as 
linear low density polyethylene containing up to 3 weight percent of 
a blend of polyphenylene oxide and styrene resin exhibit excellent 
physical properties, particularly impact strength.
Patent EP-0326931-A3 (EP)
IPC: C08L73/00
Filed: 1989-01-26
Abstract: Die Erfindung betrifft eine wärmehärtbare Harzmischung aus 
   A) einem polyfunktionellen, aromatischen Cyansäureester,    B) einem monofunktionellen, aromatischen Cyansäureester,    C) einem thermoplastischen Polymeren,    D) gegebenenfalls einem Bismaleinimid,    E) gegebenenfalls einem Epoxidharz.
Patent EP-0336328-A3 (EP)
Title: Apparatus for optically recording and reproducing information
IPC: G11B7/135
Filed: 1989-04-02
Abstract: An apparatus for optically recording and 
reproducing information in and from an optical 
information recording medium having a guide track. The 
apparatus uses an optical head having a diffraction 
grating, for recording and reproducing information. In 
recording information, a zero-order diffraction light 
beam from the diffraction grating is used for the 
information recording, and plus/minus first-order 
diffraction light beams from the diffraction grating are 
used for the tracking. In reproducing information, the 
zero-order diffraction light beam is used for the 
tracking, and higher- and odd-order diffraction light 
beams including at least plus/minus first-order 
diffraction light beams are used for information 
reproduction.
Patent EP-0348716-A3 (EP)
Title: Thermal switch
IPC: H05B3/74
Filed: 1989-06-10
Abstract: A thermal switch, serving especially as a temperature limiter for a radiant heating body (11) for heating a glass-ceramic plate (12), has radiant heaters (13, 14). Its bar-shaped temperature sensor (20) has an expansion bar (24) which is located in a tube (25) serving as a reference and which can consist of a chromium/iron/aluminium alloy and is heat-treated above 1100 DEG C. The tube (25) can consist of a radiation-absorbing material or is coated with such, for example cordierite, non-transmissive glass ceramic or vitreous silica. Both measures ensure that the thermal switch has an increased switching amplitude and therefore a reduced switching frequency. 
<IMAGE>
Patent EP-0348911-A3 (EP)
Title: 19-fluoro- or cyano- 21-hydroxyprogesterone derivatives useful as 19-hydroxylase inhibitors
IPC: C07J5/00
Filed: 1989-06-27
Abstract: 19-Fluoro- and cyano- substituted 21-hydroxyprogesterone derivatives and related compounds which are active as 19-hydroxylase inhibitors and useful as antihypertensive agents are described herein. The compounds are prepared using appropriate synthetic pathways which will vary according to the nature of the specific 19-substituted progesterone or related compound desired.
Patent EP-0390977-A3 (EP)
Title: Servo system for a disc player
IPC: G11B7/09
Filed: 1989-12-28
Abstract: A servo system for a disc player having a pickup for 
reading information recorded on an information recording 
disc, includes an A/D converter for converting an error 
signal produced on the basis of signals output from the 
pickup into a digital signal, and performs driving and 
control of the pickup according to the signal level of 
the error signal having been processed digitally. The 
servo system further comprises a filter circuit 
permitting low frequency components of the error signal 
to pass therethrough and supplying the low frequency 
components to the A/D converter, detection circuit 
detecting noise components having levels higher than a 
predetermined level, contained in the error signal, and a 
circuit generating a control signal for a predetermined 
period after an instant of detection of the noise 
components by the detection circuit. The filter circuit 
has a first transmission characteristic with a cut-off 
frequency below one half of a sampling frequency of the 
A/D converter when the control signal is absent, and a 
second transmission characteristic with another cut-off 
frequency lower than the cut-off frequency when the 
control signal is present.
Patent EP-0348002-A3 (EP)
Title: Herbicidal acrylonitrile derivatives
IPC: C07D213/70
Filed: 1989-06-20
Abstract: Compounds of the general formula 
   
     in which R¹ and R² each independently represents an 
alkyl group, Z represents a nitrogen atom or a group 
CH unsubstituted or substituted by a substituent X,  m  
is 0 or an integer from 1 to 4, the or each Y 
represents a halogen atom,  n  is 0 or an integer from 
1 to 5, and the or each X represents a halogen atom 
or a group selected from alkyl, haloalkyl, 
cyanoalkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, 
alkynyloxy, alkylthio, alkenylthio, alkynylthio, 
cyano, nitro, alkylsulphonyl, alkylsulphinyl, and 
sulphonamido, have been found to have herbicidal 
activity.
Patent EP-0375027-A3 (EP)
Title: Improved fatty compositions with high solids content
IPC: A23L9/20
Filed: 1989-12-12
Abstract: Edible compositions comprising solid and liquid 
fatty materials, and having a high solids content, 
said solids having a particle size of 10 microns or 
less. Preferably, the fatty materials are wholly or 
partially non-digestible.
Patent EP-0333445-A3 (EP)
Title: Aromatic allene compounds and preparation thereof
IPC: C07C65/28
Filed: 1989-03-15
Abstract: Allene compounds have the formula:  
(CH₂=C=CH-O) n - R -(A) m       (I)  
in which R is a substituted or unsubstituted mono- or poly­
valent benzene, naphthalene, anthracene, azobenzene, 
bisphenol or polyphenyl (containing 2 to 10 benzene rings 
connected in line) nucleus, or a group  
-Ph - R¹ - Ph -      (II)  
(in which each group Ph is a phenylene, halophenylene, 
alkylphenylene, cyanophenylene or alkoxyphenylene group, and 
the chain R¹ linking the two group Ph is a C₁ - C₆ aliphatic 
hydrocarbon or an alicyclic hydrocarbon group, the chain 
optionally being interrupted by one or more oxygen atoms);  
A is a carboxyl or sulphonyl group or a group -CH=C=CH₂; 
n is an integer of from 1 to 10; m is 0, 1, 2 or 3; and the 
sum of m and n is equal to the valence of the group R.  
     They may be prepared by isomerization of corresponding 
propargyloxy compounds.
Patent EP-0333509-A3 (EP)
Title: Integrated circuit having laser-alterable metallization layer
IPC: H01L21/3205
Filed: 1989-03-17
Abstract: An integrated circuit and a method of altering such 
an integrated circuit (e.g., during final testing of the 
circuit) are disclosed. The method can be used to program 
a circuit, wire around defective portions of a circuit, or 
otherwise permanently alter a circuit by employing a 
directed energy source such as a laser to sever electrical 
paths in an upper layer of metallization in an integrated 
circuit. The integrated circuit comprises a laminated 
upper metallization layer, the upper layer(s) of which 
laminate are removed from the laser-alterable lower layer 
at selected locations in the metallization layer to 
provide laser-alteration sites in the circuit. In a pre­
ferred embodiment, the upper metallization layer comprises 
a two-layer laminate including an upper, relatively thick 
layer of an aluminum/silicon alloy (112) and a lower, relatively 
thin layer of titanium nitride (111).
Patent EP-0340901-A3 (EP)
Title: Access system for dual port memory
IPC: G06F15/167
Filed: 1989-03-22
Abstract: A multiprocessor numeric processing subsystem wherein an extremely wide (and 
therefore high bandwidth) data bus connects the arithmetic calculation subunit to a large 
data cache memory. This cache is multiported, so that newly retrieved data can be 
written into the cache at essentially the same time that data transfer is occurring 
between the numeric processing subunit and the cache.  
     A novel double buffering subsystem is used at the interface between a numeric 
processor and a large data cache memory. The partitioning of the register file avoids data 
collisions in the cache memory. A dual port memory is used, and is partitioned in 
software so that the top half of the memory is allocated to one processor, and the bottom 
half to the other. (This allocation is switched when both processors set respective flag 
bits indicating that they are ready to switch.) On accesses to this memory, additional bits 
tag the access as "physical," "logical," or "preview." A physical access is interpreted as a 
literal address within the full memory, and the double buffering is ignored. A logical 
access is supplemented by an additional address bit, determined by the double buffering 
switch state. A preview access is used for read access only, and goes to the opposite bank 
of memory from that which would be accessed in a logical access. The use of preview 
access can be particularly advantageous in avoiding data flow inefficiencies at 
synchronization points in pipelined algorithms.  
     Multiple numeric processing modules (of different types if desired) can be 
connected in parallel. A control processor controls data transfers into and out of each of 
the numeric processing modules. Control of these data transfers is accomplished by an 
extension of the control processor's microcode. Extensions of the control processor's 
writable control storage are located on each of the numerical processing modules. Each of 
the extensions includes its own decode logic, and stores its own executable 
microinstructions.
Patent EP-0337712-A3 (EP)
Title: Method of production of high purity silica and ammonium fluoride
IPC: C01B33/18
Filed: 1989-04-11
Abstract: A method for producing high purity silica and ammonium fluoride from silicon tetrafluoride-containing gas wherein silicon tetrafluoride-containing gas from the acidulation of phosphorus-containing rock is recovered and the liquid entrainment is separated from the gas. The recovered gas is converted to an ammonium fluosilicate solution and is ammoniated to produce high purity silica and ammonium fluoride. The recovered gas can be converted to an ammonium fluosilicate solution either by absorbing the gas directly in a solution of ammonium fluoride or by first absorbing the gas in water to produce fluosilicic acid and then reacting the fluosilicic acid with ammonia or ammonium fluoride. In a second aspect, the invention provides a method of separately recovering high purity silica and ammonium fluoride from an impure aqueous fluosilicic acid solution by reacting the fluosilicic acid solution with ammonia or ammonium fluoride for a time and at a temperature sufficient to form ammonium fluosilicate solution, recovering solid ammonium fluosilicate from the solution, purifying the solid ammonium fluosilicate by dissolving the solid in high purity water or ammonium fluosilicate solution, recrystallizing solid ammonium fluosilicate, and recovering purified ammonium fluosilicate crystals from the solution, forming an aqueous solution of the purified ammonium fluosilicate crystals and ammoniating the solution for a time and at a temperature sufficient to precipitate silica, and separately recovering high purity silica and ammonium fluoride.
Patent EP-0350297-A3 (EP)
Title: Improved high frequency switching in coupled inductor power supplies
IPC: H02M3/335
Filed: 1989-07-06
Abstract: The present invention relates to a fly-back circuit 
in which the energy stored in a coupled inductor 
(n,5) on the forward cycle is transferred to a 
secondary winding (n,8) during the off period of the 
primary switch (n,4) circuitry for clamping the 
leakage inductance energy released across the primary 
winding (n,6) of the coupled inductor (n,5) on 
opening the primary switch (n,4) and recycling such 
energy into a load comprising:-  
a storage capacitor (n,1)  
a clamping MOSFET (n,2) connected in series 
with said storage capacitor (n,1)  
a feedback winding (n,7) connected between the 
gate and source of said clamping MOSFET (n,2) 
whereby said clamping MOSFET (n,2) is biased 
on during the off cycle of said primary switch 
(n,4).
Patent EP-0356193-A3 (EP)
Title: Amino-substituted bridged azabicyclic quinolone carboxylic acids and esters
IPC: C07D453/06
Filed: 1989-08-22
Abstract: Compounds of the formula <CHEM> wherein R<1> is hydrogen, C1-C6 alkyl, or a pharmaceutically acceptable cation; Y is cyclopropyl, ethyl or p-fluorophenyl, and X is hydrogen or fluoro, or X and Y taken together form a group <CHEM> wherein R<3> is hydrogen or C1-C4 alkyl; or a pharmaceutically acceptable salt thereof, have antibacterial properties.
Patent EP-0358485-A3 (EP)
Title: Human rhinovirus peptides
IPC: C07K19/00
Filed: 1989-09-06
Abstract: A synthetic peptide comprises: 
   (i) an epitope of a human rhinovirus (HRV) capable 
of eliciting T-cell help for production of antibody against 
an antigen, or    (ii) a modified form of a said epitope wherein an 
amino acid residue of a said epitope has been replaced by 
another amino acid residue such that the thus-modified 
epitope is also capable of eliciting T-cell help; 
or a pharmaceutically acceptable salt thereof. The 
synthetic peptide may also comprise a B-cell epitope. 
Alternatively, a B-cell epitope may be presented by a second 
peptide.
Patent EP-0366391-A3 (EP)
Title: Polyester resin exhibiting optical anisotropy in molten state and resin composition
IPC: C08K3/00
Filed: 1989-10-23
Abstract: A polyester resin exhibiting optical 
anisotropy in a molten state comprises 
constituent units represented by the following 
formulas (I) to (III) as essential components wherein 
the contents of the units (I), (II) and (III) are 
more than 70 mole %, 5 to 20, mole % and 5 to 20 mole %, 
respectively, based on the total amount of the 
constituent units:
Patent EP-0367475-A3 (EP)
Title: Process for producing haemoglobin concentrate
IPC: A61K38/16
Filed: 1989-10-24
Abstract: A process for producing haemoglobin concentrate 
comprises concentrating erythrocytes as much as 
possible, destroying the membranes of the erythrocytes 
to obtain a haemoglobin-concentrated solution and 
removing the constituents of the erythrocyte membranes 
and the like without diluting the solution.
Patent EP-0369830-A3 (EP)
IPC: H04J3/14
Filed: 1989-11-20
Abstract: In a communications system having a time base for system 
synchronization, there is provided a method and apparatus 
for controlling the sensitivity of a receiver (14) 
characterized by the steps of (a) receiving a signal (2,24) 
that was predeterminally transmitted by another relative to 
the time base (t0) wherein signal reception is confirmed 
when the amplitude of the received signal exceeds a 
pre-established threshold (18,REF), (b) determining signal 
transit time (16) from the time difference between the 
instant of signal reception relative to the time base and 
the instant of signal transmission relative to the time 
base (t0), (c) controlling the sensitivity of the receiver 
(14) as a function of the transit time (t0) by: (1) 
increasing the gain of the receiver (14) from a minimum 
sensitivity at the predetermined transmission instant (t0) 
to a maximum sensitivity at maximum range (maximum expected 
transmit time) and (2) nominally maintaining the receiver's 
gain at the level prevailing at the instant the signal is 
received (18).
Patent EP-0360757-A3 (EP)
Title: Phosphate ester pigment dispersant
IPC: C09K23/00
Filed: 1989-09-19
Abstract: An aqueous pigment dispersion containing as the 
dispersing agent a phosphate ester salt having the general 
formula: 
  
wherein: R and R′ are the same or different linear or 
branched alkyl groups of 2 to 12 carbon atoms;  
k and l are the same or different integers having a 
value of 1 or 2;  
x and y are the same or different integers having 
values of greater than 1 but less than 13; and,  
M is a cation selected from the group consisting of 
potassium, sodium and ammonium. The dispersing agent is 
especially useful to disperse azo type pigments. The resulting 
pigment dispersion exhibits improved stability.
Patent EP-0385376-A3 (EP)
Title: Persistent photoconductive coating composition
IPC: G03G5/06
Filed: 1990-02-26
Abstract: A persistent photoconductive coating composition contains a 
persistent photoconductor, photoinitiator and an acetate or 
phenolic hydroxyl-containing resin dispersed in an inert coherent 
matrix.
Patent EP-0391306-A3 (EP)
Title: An image forming apparatus
IPC: G03G15/16
Filed: 1990-04-02
Abstract: An image forming apparatus includes a movable 
image bearing member (1); an image forming device (5,6) for 
forming a toner image on the image bearing member; 
image transfer device (2) for transferring the toner image 
from the image bearing member to a transfer material (P) at 
an image transfer station, wherein the transfer device 
includes a charging member (1) press-contacted or faced to 
the image bearing member and a device (4) for applying a 
voltage to the charging member, wherein the voltage 
applying device applies a voltage to the charging 
member so that the charging member is constant-voltage-controlled 
when an image region of the image bearing 
member is in the transfer station, and the charging 
member is constant-current-controlled during at least a 
part of a period when it is not in the transfer 
station, wherein a voltage V2 applied during the 
constant voltage control is a voltage V1 appearing in 
the transfer device during the constant current control 
multiplied by a coefficient R, in which R is larger 
than 1.
Patent EP-0393717-A3 (EP)
Title: Active filter circuit
IPC: H03B5/36
Filed: 1990-04-20
Abstract: An active filter circuit includes a first (10) and 
second (14) differential pairs each having a pair of 
transistors. A capacitor (C₁, C₂) is connected to a collector of 
each on transistor of the first and second differential 
pairs. A first and second negative feed-back paths are 
connected, respectively, between the collector and a base 
of one transistor of the first differential pair and 
between the collector of one transistor of the second 
differential pair and a base of the other transistor of 
the first differential pair. By applying suitable 
voltages to respective inputs of the differential pairs, 
the active filter circuit functions as a band-pass 
filter, lowpass filter, high-pass filter, band 
elimination filter or phase-shifting filter with the same 
circuit configuration. A current mirror circuit (Q₁₃, Q₂₃) 
correlatively changes current amounts of the first and 
second differential pairs in response to a control 
voltage, whereby a filter characteristic can be changed.
Patent EP-0397119-A3 (EP)
IPC: C12N11/08
Filed: 1990-05-08
Abstract: A composition is disclosed herein which comprises a core 
of a polyacrylonitrile homopolymer or copolymer and a surface of 
N-haloamides. Also disclosed is a process for the production of said 
composition.
Patent EP-0408992-A3 (EP)
Title: Rotating fluid machine for reversible operation from turbine to pump and vice-versa
IPC: F01C3/02
Filed: 1990-07-04
Abstract: Rotating fluid machine for reversible operation from turbine to pump and vice-versa, in which according to the invention, provision is made for a bladed rotor (11) consisting of a disk (15), tightly rotating in an casing (12) integral with a coaxial rotor spindle (17) around an axis of rotation (X-X) and possessing at least one radial groove (15.2) emerging onto its external peripheral contour, as well as consisting of at least one rotor blade (18), integral in rotation with the disk (15) around said axis (X-X) and supported in the radial groove (15.2) in such a way that it can freely rotate in a plane containing the axis of rotation (X-X), by means of a carrying pin (18.4) integral to the disk (15), in which machine the casing (12) has a continuous internal fluid duct (19) with a substantially helicoidal pattern, essentially comprising a series of three vanes, of which: The first vane (19.1) proceeds from an inlet (20) for fluid suction or intake, with a pattern substantially akin to a conical semispiral, extending as far as the proximity of the external periphery of the casing (12), where a second vane (19.2) proceeds in sequence from the first vane, with a pattern substantially akin to a cylindrical spiral defining the larger-diameter cavity in the casing (12), where a third vane (19.3) proceeds in sequence from the abovementioned second vane, with a pattern--substantially akin to a conical semispiral--that is opposite to the pattern for the first vane, and which emerges in an outlet (21) for the delivery or discharge of fluid; and in which machine at least one blade (18) of the rotor (11) is tightly engaged and guided in its rotation around axis (X-X) with one or other of its extremities in turn (18.2, 18.3) in the second vane (19.2) of duct (19).
Patent EP-0415089-A3 (EP)
Title: Axial sealing
IPC: F04C2/14
Filed: 1990-07-27
Abstract: Axial seal (30) with retaining ring (31) and sealing ring (41) integrally fixed to this. The retaining ring (31) is composed of a thermoplastic material with extrusion-resistant core and somewhat compliant surface (32) which, owing to the compressed sealing ring (41) and the oil pressure, is pressed against the wall (22) of the gap (21) to be sealed. <IMAGE>
Patent EP-0392596-A3 (EP)
Title: Lock with an electromechanical release mechanism
IPC: E05B47/00
Filed: 1990-04-05
Abstract: An "electronic" lock has a thrower 5 for extending and retracting the bolt when turned by a key carrying a proper code. Turning of the thrower through a sufficient distance to shift the bolt is normally blocked by a dogging lever 20 with which the thrower lug 6 abuts. The thrower lug also sweeps a cam track 28 on a second lever 26 so as to pivot the latter during initial turning movement of the thrower away from its rest position. The second lever carries an electromagnet 30. While the electromagnet remains de-energized there is no interaction between the two levers so that the second lever 26 can pivot independently of the first 20 and turning of the thrower remains limited. When a correct key code is detected, however, the electromagnet is energized to hold the two levers together. Initial turning of the thrower thereby causes the second lever to carry the dogging lever away from its blocking position and thus free the thrower for 360 DEG  movement.
Patent EP-0385648-A3 (EP)
Title: Trailer brake control for towing vehicles having electronic brake control
IPC: B60T13/66
Filed: 1990-02-21
Abstract: An electronic braking system for a towing vehicle 
for towing a standard semi-trailer without such a braking 
system has a separate pressure control channel (32) for 
the generation of trailer brake pressure whenever the 
towing vehicle is braked or if the parking brake of the 
towing vehicle is applied. The pressure signal level set 
in the towing vehicle is a function of the driver's 
electrical demand signal, compensated for trailer load 
and operating gradient.  
     The compensation for trailer load is evaluated by 
assessing the total trailer mass from measurements of 
towing load during acceleration and substracting from 
this value the portion of the trailer load being 
supported by the towing vehicle as sensed by vertical 
force protection means on the towing means.
Patent EP-0421808-A3 (EP)
Title: Funds transfer system
IPC: G06Q40/00
Filed: 1990-10-05
Abstract: The present invention relates to a method of transferring funds characterized in that it includes the steps of linking a first portable data storage and processing device to a first financial institution; debiting an account held at the financial institution and recording a corresponding credit value in the first portable data storage and processing device; linking the first portable data storage device to a second, similar device; reducing the credit value in the first device and recording a corresponding credit value in the second device; linking the second portable data storage and processing device to a second financial institution; reducing the credit value in the second device; and recording a corresponding credit value in an account held at the second financial institution.