...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6756930 | Self-contained digital signal transmitter and a remote control system on its basis A signal transmitting means, in particular relates to a self-contained apparatuses for transmitting digital signals and remote control systems on their basis. Said apparatuses enables the creation of self-contained digital signal transmitters with efficient circuit ... | 06/29/2004 |
| 6815569 | Compositions comprising tetramantanes and processes for their separation Disclosed are compositions comprising one or more tetramantanes. Specifically disclosed are compositions comprising 10 to 100 weight percent of one or more tetramantanes. Also disclosed are novel processes for the separation and isolation of tetramantane components ... | 11/09/2004 |
| 6812187 | Carbon molecular sieve and method for manufacturing the same A method for manufacturing a carbon molecular sieve with increased microporosity; a method for manufacturing a carbon molecular sieve with increased microporosity and improved structural regularity; a carbon molecular sieve with increased microporosity; a carbon mol... | 11/02/2004 |
| 6787122 | Method of making nanotube-based material with enhanced electron field emission properties A method of reducing electronic work function, reducing threshold field emission values, converting semiconducting behavior to metallic behavior, increasing the electron density state at the Fermi level, and increasing electron emission site density, of nanostructur... | 09/07/2004 |
| 6546979 | Method for controlling a drum debarker The present invention relates to a method controlling a drum debarker by way of using the drum weighing information in the control of the drum debarking process. The method comprises the steps of determining the weight of the contents in the drum determining t... | 04/15/2003 |
| 6468643 | Laminated product The invention provides a laminated product of urethane-based resin. That is, the invention arranges a continuous reinforcing fiber to one direction, impregnates the arranged fiber with thermoplastic resin to form a prepreg sheet having 50% in volume ratio... | 10/22/2002 |
| 6458908 | Sulfur-containing unsaturated carboxylate compound and its cured products A sulfur-containing unsaturated carboxylate compound comprising a sulfur-containing substituent and at least two ,ଲ-unsaturated carboxylic acid residues, which are each attached to a secondary or tertiary carbon atom via an oxygen atom; a pol... | 10/01/2002 |
| 6454930 | Procedure and device for the three-dimensional processing of a work piece by means of electroerosive or electrochemical machining A procedure and a device for the electroerosive or electrochemical machining of bent surfaces of a work piece (2) by means of an electrode (1; 1'; 1") which is generally independent of the form of the bent surface, in which the electrode (1; 1'; 1") is le... | 09/24/2002 |
| 6429405 | Apparatus and method for welding pipes together Two pipes are arranged, when forming a deep sea pipeline, end to end thereby defining a circumferentially extending narrow angled (less than 10 degrees) groove. Two arc welding torches are arranged directly adjacent to each other on a single carriage that... | 08/06/2002 |
| 6417294 | Films and molded articles formed from aliphatic polyester compositions containing nucleating agents An aliphatic polyester formed item having transparency and crystallinity in combination by crystallizing, in the course of or after processing, an aliphatic polyester composition comprising aliphatic polyester and one or more transparent nucleating agent ... | 07/09/2002 |
| 6413296 | Recovery of gold from refractory ores and concentrates of such ores A method of increasing the leaching yield of gold in the cyanide treatment of refractory ores or concentrates of such ores, while delivering air in an alkaline environment at atmospheric pressure, wherein gold present in said ores or concentrates is bound... | 07/02/2002 |
| 6406676 | Method of purifying acid leaching solution by precipitation and oxidation A method of purifying an acid leaching solution obtained by processing hydrometallurgically material that contains valuable metals and also Fe3+ and Fe2+, and possibly also arsenic in solution. The major part of the Fe3+ -... | 06/18/2002 |
| 6395843 | Electrostatic image developing toner Urethane-modified polyester resin which has a total acid value not greater than 10 KOH mg/g and is obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a lo... | 05/28/2002 |
| 6383255 | Method for recovering the valuable metal content of a sulphuric acid leaching solution A method for winning the valuable metal content of a leaching solution acidified with sulphuric acid, by solvent extraction and electrowinning and a following final product winning stage, for instance an electrowinning stage, wherein the pH of the leachin... | 05/07/2002 |
| 6359180 | Production method of 4,6-diaminoresorcin The present invention relates to a novel production method of 4,6-diaminoresorcin, and to 2-sulfonic acid-4,6-dinitroresorcin as its intermediate and salts thereof. The target compound is obtained by (R1) sulfonating resorcin (A) to obtain resorcin 2,4,6-... | 03/19/2002 |
| 6355327 | Optical recording medium and dipyrromethene metal chelate compound for use therein A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: #... | 03/12/2002 |
| 6352847 | Ammonia elimination liquid reagent The invention provides an ammonia elimination reagent in solution, comprising a thermo-resistant isocitrate dehydrogenase with prominent stability under conditions at high alkaline pHs. For example, the isocitrate dehydrogenase is preferably derived from ... | 03/05/2002 |
| 6351068 | Transparent conductive laminate and electroluminescence light-emitting element using same A transparent conductive laminate in which a transparent conductive layer (an ITO film) mainly comprising indium, tin and oxygen is formed on one main surface of a transparent substrate such as a polymeric film and which is excellent in moist heat resista... | 02/26/2002 |
| 6350477 | Food material containing antioxidant ingredient derived from citrus fruits A process for producing a food material having a high concentration of eriocitrin, which comprises extracting a juice, a peel and a squeezed juice refuse of a citrus fruit with a polar solvent, applying the extract to a synthetic adsorption resin, and sep... | 02/26/2002 |
| 6346569 | Production process of cross-linked polysuccinimide resin A process is disclosed for producing with good productivity a cross-linked polyaspartic acid resin having biodegradability and high water absorbency. The process features inclusion of one of the following steps: (a) a polysuccinimide, which has been broug... | 02/12/2002 |
| 6342241 | Medical composition of hydroxy acid-based oligomer A medical composition is here disclosed which comprises a hydroxy acid-based oligomer (A) and a drug (B), wherein the hydroxy acid-based oligomer (A) is an oligomer in which the carboxylic acid-terminals are at least partially esterified, and the oligomer... | 01/29/2002 |
| 6335452 | 1-substituted 2,5-dithienyl pyrrole derivatives and film-forming materials A 1-substituted 2,5-dithienylpyrrole derivative having the following formula (I). ##STR1## in which R is hydrogen, a substituted or non-substituted alkyl group, or a substituted or non-substituted aromatic group, Y is hydrogen or cyano group, it can ... | 01/01/2002 |
| 6328916 | Addition method of supercritical carbon dioxide, and production process of expanded thermoplastic resin product by making use of the addition method This invention provides a method for stably adding a predetermined amount of supercritical carbon dioxide at a fixed delivery rate into a forming machine and also a process for producing an expanded thermoplastic resin product by making use of the additio... | 12/11/2001 |
| 6320020 | Sulfur-containing (thio)ether (co)polymer and a use thereof A sulfur-containing (thio)ether (co)polymer comprising repetitive structural units represented by general formulas 1 and 2, and an optical element using the (co)polymer: ##STR1## where A and B are bivalent organic group; R1 and R2 ar... | 11/20/2001 |
| 6320078 | Method of producing benzamide derivatives In the case that a selectively monoacylated phenylenediamine derivative which is useful as any of medicines, agricultural chemicals, animal drugs and the intermediates of chemicals is prepared by reacting a benzoic acid derivative with a phenylenediamine ... | 11/20/2001 |
| 6310147 | Epoxy-resin composition and use thereof An epoxy-resin composition comprising (A) an at least bifunctional epoxy compound and/or an at least bifunctional epoxy resin, (B) an at least bifunctional ester-containing compound and/or an at least bifunctional ester-containing resin as a curing agent,... | 10/30/2001 |
| 6303815 | Process for preparing phosphine oxides and process for purifying the same A process for preparing phosphine oxides by reacting iminophosphoranes with phosphorus oxytrichloride by which highly purified phosphine oxides can be obtained industrially in a higher yield. Specifically, phosphine oxides are prepared in such a manner th... | 10/16/2001 |
| 6303747 | Selenium-containing transparent optical material A transparent optical material containing at least one selenium atom, a plastic lens comprising the transparent optical material, and methods for preparing them. In addition, there are also disclosed novel selenium-containing compounds represented by the ... | 10/16/2001 |
| 6303349 | Esterase and methods for the production of optically active chroman compounds Optically active chroman-3-acetic acids and optically active chroman-3-acetic acid esters can be obtained by treating a mixture of (3R)- and (3S)-chroman-3-acetic esters of formula (I) ##STR1## [wherein R1 is a straight or branched alkyl group ... | 10/16/2001 |
| 6300464 | Polymerizable composition An optical resin prepared by curing a polymerizable composition comprising a (thio)epoxy compound having at least one intramolecular disulfide bond exhibits a considerably high refractive index while maintaining good optical properties and a high Abbe num... | 10/09/2001 |
| 6300368 | Anilide derivatives and antiarrhythmic agents containing the same Preparation of antiarrhythmic agents containing novel anilide derivatives represented by the following formula as active ingredient provides a new type of antiarrhythmic agent of highly safe and effective, without effects on cardiac function. ##STR1#... | 10/09/2001 |
| 6297332 | Epoxy-resin composition and use thereof An epoxy-resin composition comprising (A) an at least bifunctional epoxy compound and/or an at least bifunctional epoxy resin, (B) a curing agent, and (C) an accelerating agent, the accelerating agent essentially containing a phosphine oxide represented b... | 10/02/2001 |
| 6284209 | Agent for and process of treating exhaust gas An agent for treating an exhaust gas, which is a mixture of a solid metal oxide and a solid metal carbonate as a main component, the metal being selected from the group of metal elements consisting of Mn, Fe, Ni, Cu and Zn. The agent is made of a molded a... | 09/04/2001 |
| 6273791 | Method of producing semiconductor wafer A method of producing a semiconductor wafer, which can prevent the breakage of a wafer, and also can reduce the working time in a series of operations attended by back surface grinding of the semiconductor wafer. The method involves producing a semiconduc... | 08/14/2001 |
| 6265510 | Thiol and sulfur-containing O-(meth)acrylate compounds and use thereof A sulfur-containing O-(meth)acrylate compound of the following formula (1) is useful as a starting material for a resin composition used in optical applications such as a lens; ##STR1## wherein R represents hydrogen atom or methyl group; 1 represents an i... | 07/24/2001 |
| 6262309 | Process for producing norbornane dimethylene amines Disclosed is a process for producing norbornane dimethylene amines wherein norbornane dicarbonitriles are hydrogenated by using a Raney cobalt catalyst containing manganese etc. in the presence of water in an amount of 0.1 to 1.5 moles per mole of the nor... | 07/17/2001 |
| 6255400 | Polymer and applications thereof A polymer (B) is prepared by polymerizing one or more vinyl monomers (c) in the presence of a polymer (A) prepared by polymerizing one or more vinyl monomers (a) selected from the group consisting of vinyl monomers represented by the general formula (1): ... | 07/03/2001 |
| 6252053 | Enzyme-antibody complex and a method for manufacturing the same The present invention relates to an enzyme-antibody complex where one or more molecule(s) of enzyme into which a maleimide group or a thiol group is introduced is/are covalently conjugated to a carrier (polylysine, aminodextyan and so forth) in which a th... | 06/26/2001 |
| 6242654 | Preparation process of fluorine substituted aromatic compound A preparation process of a fluorine substituted aromatic compound comprising reacting an alkali metal or alkali earth metal salt of an aromatic compound having a hydroxy group with an organic fluorinating agent is disclosed. As a representative fluorinati... | 06/05/2001 |