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| Patent # | Description |
|---|---|
| US-4,892,852 |
Transition metal composition A transition metal composition is obtained by reacting the magnesium salt of a cycloalkyl carboxylic acid with a transition metal compound, and optionally a... |
| US-4,892,851 |
Process and catalyst for producing syndiotactic polyolefins The invention provides a metallocene catalyst for use in preparing syndiotactic polyolefins. The catalyst comprises a bridged metallocene in which one of the... |
| US-4,892,850 |
Tough corundum-rutile composite sintered body A sintered body formed of corundum-alumina and rutile-titania which is prepared by adding an alkali metal to an alumina-titania composite powder produced by a... |
| US-4,892,849 |
Ceramic composition having low friction coefficient at high operating
temperatures A composite of a first metal ion and a ceramic composition in the near surface region of the composition is formed by ion mixing of the first metal with the... |
| US-4,892,848 |
Silicon nitride sintered body and process for preparation thereof Disclosed is a process for the preparation of a silicon nitride sintered body, which comprises steps of (i) molding a composition comprising (a) 87 to 98% by... |
| US-4,892,847 |
Lead-free glass frit compositions Lead-free glass frit compositions for use in vitreous coatings consisting essentially of SiO.sub.2 -Bi.sub.2 O.sub.3 -B.sub.2 O.sub.3 -alkali metal ... |
| US-4,892,846 |
Reinforceable sintered glass-ceramics A fibre-reinforced ceramic material is made by making a melt of glass of specified composition, cooling the melt rapidly enough for it to solidify as a glass,... |
| US-4,892,845 |
Method for forming contacts through a thick oxide layer on a
semiconductive device A method for fabricating contacts in a semiconductor substrate includes forming a thin buffer oxide layer (26) over a substrate (10) with active devices defined... |
| US-4,892,844 |
Making a low resistance three layered contact for silicon devices A three-layer metal contact including aluminum is provided for silicon-based semiconductor devices to minimize the effects of formation of silicon precipitates... |
| US-4,892,843 |
Method of manufacturing a semiconductor device The invention relates to a method of manufacturing a semiconductor device, in which a tungsten layer is provided on a surface of a substrate by reduction of... |
| US-4,892,842 |
Method of treating an integrated circuit An integrated circuit formed in a semiconductor die which has at least two distinct functional regions is treated by mounting the die by way of its front face on... |
| US-4,892,841 |
Method of manufacturing a read only semiconductor memory device A semiconductor memory device is formed of a polycrystalline silicon electrode terminal layer, which is formed on a MOS transistor except over the gate region... |
| US-4,892,840 |
EPROM with increased floating gate/control gate coupling Disclosed is a floating gate memory array having high-speed programming capabilities. Diffused buried bit lines (14) are formed spaced apart in a semiconductor,... |
| US-4,892,839 |
Method of manufacturing a semiconductor device with polysilicon
resistors and field plate A method of manufacturing a semiconductor device in which a base of a second conductivity type is provided in a semiconductor substrate of a first conductivity... |
| US-4,892,838 |
Method of manufacturing an insulated gate field effect transistor A method of manufacturing a semiconductor device in which a lateral insulated gate field effect transistor (IGFET) (1) is provided by defining an insulated gate... |
| US-4,892,837 |
Method for manufacturing semiconductor integrated circuit device Disclosed is a method of producing a bipolar transistor which enables an external base region, an intrinsic base region and an emitter region to be formed in... |
| US-4,892,836 |
Method for manufacturing semiconductor integrated circuits including
CMOS and high-voltage electronic devices This method, requiring a reduced number of process phases and providing an efficient, high-voltage structure, comprises forming a P-well region of the N-channel... |
| US-4,892,835 |
Method of manufacturing a field effect transistor The invention relates to a method of manufacturing a field effect transistor comprising at the surface of a substrate of semi-insulating gallium arsenide W an... |
| US-4,892,834 |
Chemical sensor A sensor for detecting a chemical substance includes an insertion element having a structure which enables insertion of the chemical substance with a resulting... |
| US-4,892,833 |
Process and a reagent kit for the determination of direct and total
filirubin A process and reagent kit for the determination of direct and total bilirubin in body fluids by coupling the bilirubin with a diazonium salt and determining the... |
| US-4,892,832 |
Filter bag for microbiological examination There is here provided a convenient bag used at the time when microorganisms which adhere to a specimen containing a solid material are extracted with a saline... |
| US-4,892,831 |
Inoculating device An inoculating device having an inoculating loop, an improved streaking portion and a picker. The device is constructed of high impact polystyrene material which... |
| US-4,892,830 |
Environmentally controlled in vitro incubator An environmentally controlled incubator is described in which the enclosure of the incubator chamber strongly attenuates the transmission of light having... |
| US-4,892,829 |
Human plasma cell line having rearranged c-myc proto-oncogene Using a serum-free defined medium, a human cell line, NCI-H929, was established from a malignant effusion occuring in a patient with IgAk myeloma. The cultured... |
| US-4,892,828 |
Monoclonal antibody for human hematopoietic glycoproteins and method This invention concerns a new monoclonal antibody (mAb) 4C, recognizing a specific antigen, Leu 200, found in human hematopoietic tissues. The monoclonal... |
| US-4,892,827 |
Recombinant pseudomonas exotoxins: construction of an active immunotoxin
with low side effects Modified Pseudomonas exotaxins which comprise deletions in at least domain 1A are taught. The toxins exhibit reduced cytotoxicity. |
| US-4,892,826 |
Process for the preparation of urokinase derivatives A process for making urokinase derivatives having a sulfhydryl group incorporated into a remnant of urinary plasminogen activator. The process comprises reducing... |
| US-4,892,825 |
Immobilization of biologically active material with glutaraldehyde and
polyazetidine Immobilized biologically active material in particle form is prepared by cross-linking with glutaraldehyde and polyazetidine. An aqueous dispersion or solution... |
| US-4,892,824 |
Fast track method for producing monoclonal bi-specific immunoglobulins An accelerated method for making culturable cells which express bi-specific immunoglobulin employs a three cell fusion procedure which simultaneously fuses a... |
| US-4,892,823 |
Method for producing 2-keto-L-gulonic acid 2-Keto-L-gulonic acid is produced in a high yield by contacting L-sorbose with a microorganism of Pseudomonas sorbosoxidans, or a processed material thereof. |
| US-4,892,822 |
Enzyme-catalyzed reactions involving diphenyl carbonate Enzyme-catalyzed exchange reactions with diphenyl carbonate compounds are disclosed. Nucleophiles participating in these reactions include water and a wide range... |
| US-4,892,821 |
Method for preparing vitamin D compounds A method for introducing hydroxyl groups into vitamin D compounds at 1.alpha.- and/or 25-positions by use of a solution containing the mycelium of... |
| US-4,892,820 |
Solvent system for enzymatic coupling process Alkylphosphate solvents are disclosed for use in an amino acid and amino acid ester enzymatic coupling process. .alpha.-Aspartylphenylalanine methyl ester and... |
| US-4,892,819 |
Recombinant DNA expression vectors and DNA compounds that encode
isopenicillin N synthetase from penicillium... The present invention comprises novel DNA compounds that encode isopenicillin N synthetase. The invention also comprises methods, transformants, and polypeptides... |
| US-4,892,818 |
Bioreactor A bioreactor and method of its operation are described comprising a vertical column with a lower reaction section filled with column packing particles... |
| US-4,892,817 |
Stable phosphatase substrate composition A stabilized phosphatase substrate composition is provided comprising an indoxl phosphate, a tetrazolium salt, and a water-soluble ferricyanide/ferrocyanide... |
| US-4,892,816 |
Method for the determination of cholesterol An enzymatic method for measurement of cholesterol comprises incubating: (a) a test sample; (b) a cholesterol dehydrogenase; (c) an oxidizing agent selected from the group... |
| US-4,892,815 |
Process and reagent for the specific determination of the cholesterol of
the HDL fraction The present invention provides a process for the specific determination of the cholesterol of the HDL fraction in the presence of the LDL fraction of serum... |
| US-4,892,814 |
Method for distinguishing Creutzfeldt-Jakob disease from other dementias A method for distinguishing Creutzfeldt-Jakob disease from other causes of human dementia by analyzing the cerebrospinal fluid of patients for proteins 130 and... |
| US-4,892,813 |
Method for the determination of the enzymatic activity of convertase The invention relates to a method for measuring the enzymatic activity of a convertase, wherein: (a) a biological sample containing the convertase is brought into... |
| US-4,892,812 |
Silver halide photosensitive materials There is disclosed a silver halide photosensitive material for use under room-light wherein at least one silver halide emulsion layer contains (1) a spectrally... |
| US-4,892,811 |
Silver halide photographic material A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic... |
| US-4,892,810 |
Silver halide color photographic light-sensitive material containing
cyan dye forming coupler A silver halide color photographic light-sensitive material is described, the light-sensitive material containing a cyan dye forming coupler represented by the... |
| US-4,892,809 |
Silver halide photographic materials A silver halide color photographic material having at least one silver halide emulsion layer on a base, in which the emulsion layer contains at least one kind of... |
| US-4,892,808 |
Photographic material protected against hydrogen cyanide gas A silver halide emulsion contained in a photographic element is protected against hydrogen cyanide gas, which may evolve from carbon black contained in a... |
| US-4,892,807 |
Silver halide photographic light-sensitive material excellent in
treatment stability A color photographic material is disclosed, which is improved in the preservability of the dye image and in the resistance to the pH fluctuation or the... |
| US-4,892,806 |
Non-ionic surface active compounds and photographic materials containing
them The invention provides water soluble surface active compounds having the formula ##STR1## wherein each of R.sup.1 and R.sup.2 independently is hydrogen,... |
| US-4,892,805 |
Photographic element and process Novel pyrazoloazole dye-forming couplers containing at least one polyether group (A) comprising at least three ether (--O--) groups and terminated by a hydroxy,... |
| US-4,892,804 |
Photographic color developing compositions which are especially useful
with high chloride photographic elements Photographic color developing compositions which are especially useful in the processing of high chloride silver halide photographic elements are free, or at... |
| US-4,892,803 |
Color image-forming process compressing developer containing no benzyl
alcohol A color image-forming process which comprises developing, after imagewise exposure, a color photographic paper having at least one light-sensitive layer... |
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