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| Number | Title | Issue Date |
| 4871699 | Process for reducing coke on spent catalyst in a fluid catalytic cracking unit A process in which coke is reduced and volatile products yield increased in a catalytic cracking system wherein spent cracking catalyst is stripped in the presence of a hydrogen donor.... | 10/03/1989 |
| 4871465 | Chlorine-free silver protective lubricant composition (II) Silver protection in lubricant compositions is afforded by the combination of organo-sulfur compounds and hydrocarbon-substituted 1,2,4-triazoles, the latter being obtained by reaction of a substantially aliphatic, substantially saturated hydrocarbon-subs... | 10/03/1989 |
| 4870155 | Novel poly (etherimide) compositions Described herein are random poly(etherimide) containing ether-imide units and aryl ether and/or aryl ether ketone units. These copolymers are produced by the reaction of the appropriate activated dinitro- and/or dihalobenzenoid aromatic compounds with dip... | 09/26/1989 |
| 4869977 | Electrolyte additive for lithium-sulfur dioxide electrochemical cell The degradation of organic electrode separators in rechargeable lithium-sulfur dioxide electrochemical cells which utilize chemically uncombined aluminum chloride as an electrolyte component can be reduced by incorporating an additive into the electrolyte... | 09/26/1989 |
| 4870153 | Novel poly(aryl ether) polymers Described herein are novel poly(aryl ether) polymers that contain naphthalene, terephenylene and/or anthracenylene units within their chains. Representative polymers are tough materials having excellent high temperature, oxidative and chemical resistance,... | 09/26/1989 |
| 4867891 | Overbased alkali metal sulfonates A method of preparing a carbonate overbased alkali metal sulfonate, which method comprises: (1) forming a reaction mixture of an alkali metal compound, a lower molecular weight akanol having from 1 to 4 carbon atoms, a diluent, a solvent, and a sulfonate ... | 09/19/1989 |
| 4867559 | Liquid/liquid fiber-optic fluorescence detector and absorbance analyzer An apparatus and method are disclosed for measuring the fluorescence and absorbance of a liquid sample. A sample tube is provided that has an external surface and a bore therethrough for containing a sample fluid. A cladding fluid coats the bore of the sa... | 09/19/1989 |
| 4865754 | Lubricant overbased phenate detergent with improved water tolerance An improved overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive and the process for its preparation are disclosed. The overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive comprises the reac... | 09/12/1989 |
| 4865923 | Selective intermixing of layered structures composed of thin solid films Synthetic layered structures, which may be semiconductor structures, are modified, both laterally and vertically, to provide novel electronic, optoelectronic, and optical properties. This is accomplished by selective intermixing of such layered structures... | 09/12/1989 |
| 4866022 | Olefin polymerization catalyst A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesiu... | 09/12/1989 |
| 4863991 | Filled composition comprising crystalline copolyamide from terephthalic acid, isophthalic acid and hexamethylene diamine Polyphthalamides which, when filled, have heat deflection temperatures of at least about 240° C. are prepared from compounds of terephthalic acid and isophthalic acid in a ratio of about 70:30 to about 99:1 in combination with a diamine which comprises h... | 09/05/1989 |
| 4863888 | Catalyst containing cobalt boron and oxygen and optionally aluminum of preparation and process The preparation, structure, and properties of solid inorganic materials containing cobalt, boron, oxygen and, optionally, aluminum, is described. Also described is the use of such materials in catalytic compositions for the conversion of organic compounds... | 09/05/1989 |
| 4863596 | Cell alignment frame assembly A special, easy to use, economical frame is provided to quickly and efficiently align water purification cells in a vertical stack. The dependable, effective frame has moveable side and back posts and convenient crank or slide rod adjustments.... | 09/05/1989 |
| 4864070 | Process for the separation of ortho chlorinated aromatic isomers by selective adsorption A process is disclosed for separation of ortho chlorotoluene and ortho-dichlorobenzene from their meta and para isomers by use of a specific crystalline aluminophosphate adsorbent which selectively removes the above ortho aromatic isomers. The selectively... | 09/05/1989 |
| 4861738 | Process for regenerating and stabilizing phosphorus-vanadium-oxygen complex catalysts The present invention relates to a process for the regeneration and stabilization of certain phosphorus-vanadium-oxygen complex catalysts or phosphorus-vanadium-oxygen co-metal complex catalysts, with halogen-containing components and subsequently treatin... | 08/29/1989 |
| 4861855 | Polyamide-imide compositions from bisphenoxyphenyl diamine tricarboxylic anhydride and tetracarboxylic dianhydride Polyamide-imide compositions, including amic acid precursors thereto, having in their molecules recurring units based on aromatic tri- and tetracarbonyl moieties joined by a bisphenoxyphenyl structure exhibit a desirable combination of chemical, mechanica... | 08/29/1989 |
| 4861163 | Ellipsoidal cylinder fluorescence analyzer The present invention provides an apparatus and method for fluorescence detection. An ellipsoidal cylinder having a first focal line, a second focal line and an internal reflective surface is provided. An excitation source is disposed on the first focal l... | 08/29/1989 |
| 4861837 | Shaped article formed from a blend of a poly(aryl ether) and a polycarbonate and/or a polyarylate Described herein is a shaped article formed from a blend of a poly(aryl ether) resin and an aromatic polycarbonate resin and/or a polycarbonate resin. An article molded from such a blend has improved hydrolytic stability as compared with an article molded... | 08/29/1989 |
| 4861823 | Thermoset composition comprising aromatic cyanate ester of allyl ether of bisphenol Novel curable resin compositions are disclosed containing an aromatic cyanate ester and an allyl ether of a bisphenol as a modifier. These compositions provide improved prepregs and composites. Additional modifiers including epoxy resins and bismaleimides... | 08/29/1989 |
| 4861575 | Method of producing carbon fibers by overwrappings tows Carbon fibers may be made by a process comprising: overwrapping a multifilament polyacrylonitrile tow with a thread of material to maintain the tow as an integral bundle, followed by stabilizing said tow by heating in an oxidizing atmosphere at a temperature b... | 08/29/1989 |
| 4859623 | Method of forming vertical gate thin film transistors in liquid crystal array Vertical gate thin film transistors are integrated into an actively addressable liquid crystal array to provide the switching function for charging each pixel element and any desired peripheral transistor circuitry. One of the conductive plates of each pi... | 08/22/1989 |
| 4858534 | Ballistic lubricating and process A high performance ballistic grease is used in ammunition and a lubricating process to protect the barrel of a weapon from corrosion and overheating. The ballistic grease, ammunition, and process improve the structural integrity and accuracy of the weapon... | 08/22/1989 |
| 4859310 | Catalytic cracking of whole crude oil An effective, economical catalytic cracking process is provided to produce quality gasoline and other hydrocarbons from whole crude oil. The catalytic cracking process is operable and particularly useful during maintenance or shutdown of associated pipest... | 08/22/1989 |
| 4859352 | Low temperature high performance grease A high performance grease is provided that performs well at extremely cold temperatures and moderately elevated temperatures, as well as under normal operation conditions. The high performance grease comprises: a lithium soap thickener, a synthetic base o... | 08/22/1989 |
| 4859583 | Chemiluminescent immunochemical technique for low molecular weight antigens A sample device and method for assaying samples containing members of immunological pairs by chemiluminescence include a first chamber wherein antibody-conjugated reagent antigen labelled with a chemiluminescence moiety is displaced from the antibody by s... | 08/22/1989 |
| 4857625 | Aromatic amorphous thermoplastic terpolymers Described herein are amorphous thermoplastic terpolymers containing units of the formula: ##STR1## wherein R is independently hydrogen, C1 to C6 alkyl, or C4 to C8 cycloalkyl, X' is independently ##STR... | 08/15/1989 |
| 4856834 | Fire hose gripping device and process for fighting fires in oil refineries and the like A quick release clamp is provided to easily receive, slide upon and secure a fire hose without any moving parts. The quick release clamp has a comfortable handle and substantially reduces fatigue of firemen who need to hold the hose for long periods of ti... | 08/15/1989 |
| 4855503 | Preparation of P,P'-oxybis(aniline) Oxybisaniline is prepared in high yield by reacting a hydroxylamine with a polycarboxylic diphenyl ether in the presence of an inorganic acid. The acid groups are directly converted to amine groups. By-products of the reaction are negligible.... | 08/08/1989 |
| 4855388 | Co-reagent stabilization of poly(aryl ether sulfones) using sodium, lithium, alkaline earth or lanthanide metal salts Described herein is a method for preventing molecular weight degradation in the preparation of poly(aryl ether sulfones) by nucleophilic displacement polycondensation reactions. This method comprises the addition of an effective amount of a sodium, lithiu... | 08/08/1989 |
| 4853547 | System for radiation detection using a graded index optic element An apparatus and method for delivering excitation radiation to a sample and collecting radiation emanating from the sample. The sample is placed in a deep well which consists of a wall and a bottom end closed by a membrane to form a sample recepticle. A G... | 08/01/1989 |
| 4853449 | Bismaleimide formulations containing olefinic ether modifiers Novel bismaleimide resin formulations are described which contain olefinic ether reactive diluents. These formulations provide a combination of prepreg processing characteristics and thermal and mechanical properties unavailable from other reactive diluen... | 08/01/1989 |
| 4849503 | Novel poly(aryl ethers) Described herein are novel poly(aryl ethers) based on 2,5-di-t-butylhydroquinone. These poly(aryl ethers) have excellent high temperature, oxidative and chemical resistance, as well as good melt-fabricability.... | 07/18/1989 |
| 4849118 | Chlorine-free silver protective lubricant composition (III) Silver protective lubricant compositions essentially free of chlorine and zinc-containing compounds comprise a 1,3,4-thiadiazole, an overbased detergent and an ashless dispersant. The invention is also directed to a method of silver protection in engines ... | 07/18/1989 |
| 4844827 | Lubricating oil additive A highly dispersant lubricating oil additive having a relatively low nitrogen content is provided by reacting a solvent free bis(primary amine) composition with an aliphatic hydrocarbon-substituted succinimic anhydride or with an admixture of an aliphatic... | 07/04/1989 |
| 4844765 | Method for preparing tufted pile carpet and adhesive therefor Lamination of a tufted, primary carpet backing to a secondary backing is conducted using a composite hot melt adhesive in sheet form. The composite adhesive overcomes the unfavorable temperature-viscosity gradient within the carpet structure during the la... | 07/04/1989 |
| 4845275 | Trimellitic acid process An improved process for the manufacture of trimellitic acid from pseudocumene feedstock is disclosed. In this process, lead (IV) is used as a catalyst component in addition to the cobalt, manganese, and zirconium catalyst. The use of lead (IV) reduces hig... | 07/04/1989 |
| 4845241 | Process for the manufacture of maleic A catalyst for the oxidation of butane to produce maleic anhydride comprising a substrate containing phosphorus and vanadium or alternatively phosphorus, vanadium and a co-metal characterized by the presence of post deposited vanadium. A process for the m... | 07/04/1989 |
| 4843168 | Catalysis using pillared hydrotalcites Magnesium-aluminum, hydrotalcite-type clay compositions containing large, pillaring organic, inorganic, and mixed organic/inorganic anions have been made. Heating of the mixed large organic/inorganic anion hydrotalcite-type clays can lead to substantially... | 06/27/1989 |
| 4841009 | Substantially linear monomeric composition and liquid crystal polymeric compositions derived therefrom Described herein are novel substantially linear monomeric compositions which can be polymerized with one or more difunctional monomers to give novel polymeric compositions having liquid crystal properties. This invention is also directed to a process for ... | 06/20/1989 |
| 4841069 | Ammonolysis-alkylation reactions using ammonia and an alcohol to prepare N-alkyl maleimides and N-alkyl succinimides Ammonolysis-alkylation using a C1 to C8 alkanol and ammonia is used to prepare cyclic N-alkylated compounds in a one-step process. In the presence of hydrogen added as a reducing agent, a reduced N-alkylated compound can be formed.... | 06/20/1989 |
