Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7622613 | Thiol compound and photosensitive composition using the same The present invention relates to a thiol compound represented by formula (1): wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist ... | 11/24/2009 |
| 7361516 | Field of modular multifunctional ligands This invention pertains to a surface ligand; preparation of the ligand; colloidal nanoparticle, such as quantum dot bearing one or more of the ligand; and a bioconjugate characterized by a nanoparticle bearing one or more of the ligand conjugated to a biomolecule. T... | 04/22/2008 |
| 7312266 | Organic thiol metal-free stabilizers and plasticizers for halogen-containing polymers Organic thiol compounds based on pentaerythritol and dipentaerythritol are described herein. More specifically, the compounds of the present invention are mixed esters of pentaerythritol and dipentaerythritol having at least one sulfhydryl group and preferably a plu... | 12/25/2007 |
| 7271280 | Process for preparing a biaryl compound A process for preparing an optically active biaryl compound the formula (4): which comprises reacting an aromatic sulfonic acid ester compound of the formula (1): ... | 09/18/2007 |
| 7268242 | Chelating carbene ligand precursors and their use in the synthesis of metathesis catalysts Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and... | 09/11/2007 |
| 7217841 | Stabilizers and antiozonants for elastomers Elastomers which have excellent stability to prevent oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation comprise, as stabilizers, at least one compound of the formula I [R—S(═O)m—CH2—CH(OH)—CH2 | 05/15/2007 |
| 7173156 | Thioacetate deprotection A method of thioacetate deprotection by providing a compound of the formula R1—S—CO—R2, and reacting the compound with a quaternary ammonium cyanide salt in the presence of a protic solvent in an inert atmosphere to convert the compound t... | 02/06/2007 |
| 7026341 | Hetaryl substituted homotetramic and homotetronic acids and their use thereof as pesticides The present invention relates to new hetaryl-substituted homotetramic and homotetronic acids of the formula (I) in which A, B, Q1, Q2, W, G and Het have the meani... | 04/11/2006 |
| 6927247 | Organic thiol metal-free stabilizers and plasticizers for halogen-containing polymers Organic thiol compounds including mercaptophenylcarboxylates are disclosed which can be utilized to plasticize and/or stabilize halogen-containing polymer compositions, especially poly(vinyl chloride) compositions. Compounds of the present invention are utilized in ... | 08/09/2005 |
| 6906007 | Phenyl-substituted 5,6-dihydropyrone derivatives for use as pesticides and herbicides The present invention relates to novel phenyl-substituted 5,6-dihydro-pyrone derivatives of the formula (I) in which W, X, Y, Z, G, A, B, Q1 and Q2 are each as defined in the description... | 06/14/2005 |
| 6740782 | Sulfur compounds and intermolecular compounds containing the same as the component compounds The invention aims at providing novel sulfur compounds, molecular compounds containing the same as the component compound, and so on. The above aim is achieved by using sulfur compounds of the general formula (I) wherein Rs are each independently hydrogen, optionall... | 05/25/2004 |
| 6667421 | Hydrogen reduction of sulfonyl chlorides to thiols This invention relates to a process for the production of an aryl thiol, which comprises hydrogenating an aryl sulfonyl chloride in a solvent in the presence of a palladium catalyst and a base whose conjugate acid has a pKa of about 2 or greate... | 12/23/2003 |
| 6500988 | Method for producing aryl thiols by hydrogenating diaryldisulphides The invention relates to a particularly advantageous method for producing aryl thiols through the catalytic hydrogenation of diaryldisulphides. According to the invention, the hydrogenation is carried out in a basic alcoholic medium.... | 12/31/2002 |
| 6379590 | Method for making unsymmetrically substituted fluorenyl compounds for nonlinear optical applications A new method for producing unsymmetrically substituted fluorenyl compounds, one step of which is the preparation of 2,7-disubstituted fluoren-9-one derivatives via the nucleophilic substitution of a compound of the formula D ##STR1## wherein A' is se... | 04/30/2002 |
| 6376716 | Process for the preparation of aromatic sulfur compounds A process for the preparation of an aromatic thiophenol represented by the formula (I): Yn --Ar--(SH)m (I), wherein Ar represents an aromatic hydrocarbon; Y represents at least one substituent bonded to a carbon atom constituting the... | 04/23/2002 |
| 6281391 | Synthesis of methylthiophenyl hydroxyketones This invention encompasses a novel process for synthesizing compounds represented by formula A: ##STR1## These compounds are intermediates useful in the preparation of certain agents that are selective COX-2 inhibitors.... | 08/28/2001 |
| 6218578 | Polymeric film The invention relates to a polymeric film composed of an optically anisotropic material made from a cross-linked synthetic resin composition comprising a polymer network, being obtainable by copolymerization of a mixture comprising (a) at least one monome... | 04/17/2001 |
| 6024937 | Aromatic amine substituted bridged nitrogen and sulfur donor atom ligands for imaging The present invention provides aromatic amine substituted metal chelating compounds, chelates and chelate-targeting moiety conjugates formed from the chelating compounds, and methods for making and using these compounds. Metals capable of being chelated b... | 02/15/2000 |
| 5936128 | 5,6-dihydropyrone derivatives as protease inhibitors and antiviral agents The present invention relates to novel 5,6-dihydropyrone derivatives and related structures which potently inhibit the HIV aspartyl protease blocking HIV infectivity. The 5,6-dihydropyrone derivatives are useful in the development of therapies for the tre... | 08/10/1999 |
| 5932586 | Prostaglandin synthase inhibitors This invention relates to ortho substituted phenyl compounds as inhibitors of prostaglandin synthase, to pharmaceutical compositions comprising such compounds and to methods of using such compounds as antiinflammatory and antipyretic agents. The class of ... | 08/03/1999 |
| 5919985 | Method for production of sulfide group-containing thiol compound An object is to provide a method for the production of a sulfide group-containing thiol compound which comprises using a solvent capable of effecting the ring-opening addition reaction of an alkylene sulfide to a thiol compound without inducing the alkyle... | 07/06/1999 |
| 5808164 | Process for producing aromatic sulfides A process which can be used to produce an aromatic sulfide compound having the formula of (R4-n)(Xn)(W)Ar--S--R' is provided. The process comprises contacting, in the presence of a surfactant, a halo-substituted aromatic compound in ... | 09/15/1998 |
| 5750763 | Process for production of thioaryl compound The present invention provides: a process for producing an alkali metal salt of an arylmercaptan compound, represented by general formula (3): ##STR1## which process comprises reacting a disulfide compound represented by general formula: ##STR2#... | 05/12/1998 |
| 5712357 | Method for metathetically preparing sulphur containing polymers or organic compounds A process for the preparation of organic compounds or polymers containing one or more sulphur atoms and including one or more double bonds in a hydrocarbon chain is described. An acyclic sulphur-containing olefin or an unsaturated sulphur-containing cycli... | 01/27/1998 |
| 5600035 | Positive photoactive compounds based on 2,6-dinitro benzyl groups and 2,5-dinitro benzyl groups Photoreactive compounds are synthesized from 2,5- or 2,6-dintrobenzyl groups. Also disclosed are methods of synthesizing reactive monomers containing 2,5- or 2,6-dintrobenzyl groups.... | 02/04/1997 |
| 5593994 | Prostaglandin synthase inhibitors This invention relates to ortho substituted phenyl compounds as inhibitors of prostaglandin synthase, to pharmaceutical compositions comprising such compounds and to methods of using such compounds as antiinflammatory and antipyretic agents. The class of ... | 01/14/1997 |
| 5426196 | Synthesis of diaryl methanes The present Invention includes synthetic steps and intermediates involved in the following reaction scheme a of converting compounds of Formula (II) to the diarylmethanes of Formula (I): ##STR1## wherein: Y is oxygen or sulfur; A, B, C, D, and E are ... | 06/20/1995 |
| 5407960 | Mercaptocycloacyl aminoacid endopeptidase inhibitors Mercaptocycloacyl aminoacid inhibitors of endopeptidase of the formula ##STR1## or a pharmaceutically acceptable salt thereof, alone or in combination with an ACE inhibitor or an ANF, in the treatment of cardiovascular disorders such as hypertension,... | 04/18/1995 |
| 5338886 | Process for preparation of aromatic thiols Disclosed is a process for preparation of an aromatic thiol corresponding to the structure A-(SH)n wherein A is a substituted or unsubstituted aromatic radical and n is 1, 2, 3, 4, 5 or 6 comprising contacting at a temperature of at least 80° C. an aroma... | 08/16/1994 |
| 5266705 | Process for production of 2-acetylbenzo[b]thiophene A process for production of 2-acetylbenzo[b]thiophene represented by the formula (I): ##STR1## comprising the steps of: (1) reacting 2-halogenobenzaldehyde represented by the formula (II): ##STR2## wherein X represents a halogen atom, with... | 11/30/1993 |
| 5171915 | Alkylaromatic lubricants from alpha-olefin dimer It is disclosed that aromatic compounds can be alkylated with mono-olefinic HVI-PAO dimer in contact with an acidic catalyst to produce novel alkylated aromatic compositions. It has been found that the novel HVI-PAO dimer alkylated aromatic compositions e... | 12/15/1992 |
| 5157164 | Polymerizable antioxidant composition This invention is addressed to antioxidants which are polymerizable using the Ziegler catalyst system. The antioxidant of the present invention has the formula: ##STR1## wherein R1 and R2 are each aryl groups containing a hinder... | 10/20/1992 |
| 5132437 | Synthesis of 1-aminoanthraquinone 1-Aminoanthraquinone (1-AAQ) is synthesized by the reaction of 2-chlorobenzyl chloride and xylene in the presence of a solid acid catalyst to yield 2-chloro dimethyldiphenylmethane, subsequent oxidation of the methyl groups, ring closure to form a 1-chlor... | 07/21/1992 |
| 5084214 | Phenolic thioethers, and their production and use Phenolic thioethers of the formula: ##STR1## wherein R is a hydrogen atom or a protective group for carboxyl, X is a straight or branched C4 -C15 alkylene group, a straight or branched C1 -C15 alkylene grou... | 01/28/1992 |
| 5017727 | Polymerizable antioxidant composition This invention is addressed to antioxidants which are polymerizable using the Ziegler catalyst system. The antioxidant of the present invention has the formula: ##STR1## wherein R1 and R2 are each aryl groups containing a hinder... | 05/21/1991 |
| 5001271 | Synthesis of benzyl mercaptan This invention relates to the preparation of benzyl mercaptan by reacting benzyl chloride and ammonium sulfhydrate. In the process according to the invention, the reaction is carried out under autogenous pressure in a closed reactor in two steps. The first ... | 03/19/1991 |
| 4996347 | Novel beta-d-phenylthioxylosides, their method of preparation and their use as therapeutics The present invention relates, by way of novel industrial products, to osides selected from the group consisting of: (i) the ଲ-η-phenylthioxylosides of the formula: ##STR1## in which: R represents a hydrogen atom, a halogen atom, a nitro group or ... | 02/26/1991 |
| 4948827 | Methyl-2-tertiary butyl-5-thiophenol, its preparation process and its use This new thiophenol, prepared by reduction of tertiary butyl-4-toluenesulfonyl-2-chloride with the zinc-sulphuric acid couple, can be used as a stabilizer for vinyl chloride polymers, as a chain-transfer agent and as a peptizer.... | 08/14/1990 |
| 4929765 | Preparation of phenylacetaldehydes Phenylacetaldehydes of the general formula I ##STR1## where R1 to R5 are each independently of the others hydrogen, alkyl, alkoxy, halogen, haloalkyl, haloalkoxy or haloalkylthio, by catalytic rearrangement in the presence of a ... | 05/29/1990 |
| 4885403 | Process for making propargyl ethers of bisphenols A process for preparing an aromatic propargyl ether, preferably bispropargyl ether, from phenolic compounds comprising vigorously stirring a propargyl halide, preferably propargyl chloride, with a phenolic compound, such as bisphenol A, in an aqueous sodi... | 12/05/1989 |
