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 |
| 7402707 | Method of preparation of a precursor oligocene The synthesis of a precursor oligocene, particularly pentacene, is a two-step process. In the first step the Diels-Alder adduct of the a,b-dihydro-a,b-etheno-oligocene with a 1,1-dialkoxy-cyclopentadiene is formed. In the second step this Diels-Alder adduct is conve... | 07/22/2008 |
| 7358030 | Process for producing ether compound The present invention provides the following process for production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield.... | 04/15/2008 |
| 7326730 | Aminoadamantane derivatives as therapeutic agents The present invention provides novel aminoadamantane derivatives, methods of making the derivatives, compositions including the novel aminoadamantane derivatives, and methods for the treatment and prevention of neurological diseases using the derivatives and composi... | 02/05/2008 |
| 7294448 | Composition sensitive to visible light The present invention provides a visible light-sensitive composition which is highly sensitive to a visible light and is useful as an electronic circuit forming material, a lithographic printing material, etc., said visible light-sensitive composition comprising (a)... | 11/13/2007 |
| 7285686 | Process for the preparation of 1,3-substituted indenes An improved process for the preparation of 1,3 substituted indenes which are useful intermediates in the synthesis of aryl fused azapolycyclic compounds as agents for the treatment of neurological and psychological disorders. ... | 10/23/2007 |
| 7232639 | Monomer having fluorine-containing acetal or ketal structure, polymer thereof, and chemical-amplification-type resist composition as well as process for formation of pattern with use of the same As a polymer exhibiting improved transparency which is suitable for a resist resin used in a chemical-amplification-type resist being applicable for photolithography using exposure light at 180 nm or shorter, this invention provides a polymer comprising a repeating ... | 06/19/2007 |
| 7148385 | Perfluoropolyether primary bromides and lodides A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the compos... | 12/12/2006 |
| 7078562 | Adamantane derivatives and resin compositions using the same as raw material The adamantane derivatives of the present invention which are represented by the general formula (1): wherein X is a hydrogen atom, alkyl, halogen-containing alkyl, halogen, or hydroxyl-, halogen-, nitrile- or et... | 07/18/2006 |
| 7018978 | Fragrance pro-accords and aldehyde and ketone fragrance libraries The present invention relates to novel heterocyclic pro-fragrances, preferably oxazolidines, tertahydro-1,3-oxazines, thiazolidines, or tetrahydro-1,3-thiazines, more preferably oxazolidines, or tertahydro-1,3-oxazines, most preferably oxazolidines, which are capabl... | 03/28/2006 |
| 7015363 | Process for producing ether compound The present invention provides the following process for producing and the like, which enables the production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, ... | 03/21/2006 |
| 6974834 | Process for preparing enantiomerically enriched (1S,4R) 1-acetoxy-4-hydroxycyclopent-2-ene This invention relates to a process for the synthesis of enantiomerically enriched (1S,4R) 1-acetoxy-4-hydroxycyclopent-2-ene of Formula I, a compound useful as an intermediate in the synthesis of prostaglandins and prostanoids. ... | 12/13/2005 |
| 6919480 | Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine cont... | 07/19/2005 |
| 6822124 | Method for producing alcoxylated carbonyl compounds by an anodic oxidation method using a cathodic coupled reaction for organic synthesis A method for producing alcoxylated carbonyl compounds of general formula (I) (compounds I): R1aR2C(OR3)b wherein R1, R2 represent hydrogen or C1-C6-alkyl, R3 | 11/23/2004 |
| 6806392 | Process and manufacturing equipment for preparing acetals and ketals A process for the preparation of acetals and ketals by reacting an aldehyde or ketone with an alcohol in the presence of an acidic catalyst and removing water by pervaporation. Manufacturing equipment for the preparation of acetals and ketones is also provided. ... | 10/19/2004 |
| 6756497 | Benzoic acid derivatives and processes for the preparation thereof Benzoic acid derivatives useful as intermediates for the preparation of drugs and agricultural chemicals, particularly compounds having herbicidal activity; and easy and economical processes for the preparation of the same. The processes are specifically those repre... | 06/29/2004 |
| 6753402 | Polyester-polyether block copolymers Polyester-polyether block copolymers can be prepared by catalytic addition of alkylene oxides onto H-functional initiator substances, using polyester alcohols as H-functional initiator substances and multimetal cyanide compounds as catalysts. ... | 06/22/2004 |
| 6747174 | Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine cont... | 06/08/2004 |
| 6747176 | Preparation of 2-chloro-1,1,1-trialkoxyethane 2-Chloro-1,1,1-trialkoxyethane of formula (II): wherein R1 to R3, which may be the same or different, are alkyl, or any two of the alkyl groups taken together form a cyclic group, is prepared by rea... | 06/08/2004 |
| 6734313 | Synthesis of spiro esters, spiro ortho carbonates, and intermediates Ortho esters and ortho carbonates can be produced by alkylating esters and carbonates with, for example, the hexafluorophosphate salt of a trialkyl oxonium ion. The spiro species are useful intermediates in the synthesis of complex organic molecules. Synthetic pathw... | 05/11/2004 |
| 6653511 | Perfluoropolyether primary bromides and iodides A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing... | 11/25/2003 |
| 6639095 | Process for preparing optically active -hydroxy acids and derivatives thereof The present invention provides a process for preparing optically active -hydroxy acids and derivatives thereof by subjecting the alkylated 1,3-dioxolanones of formula (IV) wherein R1 and R2 are the same or different and are ea... | 10/28/2003 |
| 6613918 | Synthesis of spiro ortho esters, spiro ortho carbonates, and intermediates Ortho esters and ortho carbonates can be produced by alkylating esters and carbonates with, for example, the hexafluorophosphate salt of a trialkyl oxonium ion. The spiro species are useful intermediates in the synthesis of complex organic molecules. Synt... | 09/02/2003 |
| 6610866 | Stereoselective synthesis of 24-hydroxylated compounds useful for the preparation of aminosterols, vitamin D analogs, and other compounds A method is described for stereoselectively reducing an unsaturated alkyl ketone substituent attached to a fused ring base. In this method, the unsaturated alkyl ketone reacts with a chiral oxazaborolidine reagent. This reaction stereoselectively reduces ... | 08/26/2003 |
| 6551987 | Pro-fragrances The present invention relates to fragrance delivery systems which comprise: a) one or more pro-fragrances having formula (I) wherein G1 and G2 are methyl, or a cyclic hydrocarbyl unit derived from the isomers of ionone and/or damasco... | 04/22/2003 |
| 6528025 | Process of manufacturing equipment for preparing acetals and ketals A process for the preparation of acetals and ketals by reacting an aldehyde or Ketone with an alcohol in the presence of solid acid and removing water by pervaporation. Manufacturing equipment for the preparation of acetals and ketones is also provided.... | 03/04/2003 |
| 6518464 | Continuous process for the preparation of acetals The present invention relates to a continuous process for the preparation of unsaturated acetals by reacting olefinically unsaturated aliphatic compounds with allyl alcohols in a reaction column, where the reactants are only partially reacted in the react... | 02/11/2003 |
| 6506945 | Process for preparing ether-capped poly(oxyalkylated) alcohol surfactants A process for preparing an ether-capped poly(oxyalkylated) alcohol surfactant is provided. The alcohol has the formula: RO(R1 O)x CH(CH3)OR2 wherein R is selected from the group consisting of linear or branched, satu... | 01/14/2003 |
| 6495725 | Process for the preparation of optically active enones and intermediates thereof The present invention provides a simplified and convenient process for the preparation of an optically active enone such as 7,7-dimethyl-6,8-dioxabicyclo-[3,3,0]oct-3-en-2-one. The invention further provides novel optically active intermediate compounds. ... | 12/17/2002 |
| 6486362 | Process for producing oxygen-containing compounds containing at least one oxygen atom bonded to two distinct carbon atoms which are not bonded together and not including a multiple bond A process for producing oxygen-containing compounds containing at least one oxygen atom bonded to two distinct carbon atoms which are not bonded together and not comprising a multiple bond comprises a step a) for hydroformylation of a feed comprising at l... | 11/26/2002 |
| 6420612 | Bicycloheptene derivatives and processes for the preparation of the same Bicycloheptene compounds represented by general formula (1) and being useful as intermediates for the production of agricultural chemicals or drugs (wherein X is hydroxycarbonyl, hydroxymethyl, halogenomethyl, nitromethyl, or methylthiomethyl); and a proc... | 07/16/2002 |
| 6348606 | Cyclic dienol ethers The claimed invention relates to cyclic dienol ethers of formula (III). ##STR1## wherein R3 is hydrogen and R4 is C1-4 alkoxy or R3 and R4 together form an optionally substituted methylenedioxy group ... | 02/19/2002 |
| 6344590 | Adamantanemethanol derivatives and production processes thereof An adamantanemethanol derivative of the invention is represented by the following formula (1), wherein Ra is a hydrogen atom or a hydrocarbon group; Rb is a hydrocarbon group having a carbon atom, to which carbon atom at least one hy... | 02/05/2002 |
| 6281392 | Preparation of orthoesters Orthoesters are prepared by reacting 1,1,1-trihaloalkanes with alkali metal alkoxides in the presence of the corresponding alcohol, a slurry of the alkali metal alkoxide in the corresponding alcohol being used.... | 08/28/2001 |
| 6211416 | Method for producing enol ethers Enol ethers of the formula I ##STR1## where R1 is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical which may carry further substituents which do not react with acetylenes or allenes, and the radicals R, independently ... | 04/03/2001 |
| 6184374 | Targeted cytotoxic anthracycline analogs This invention is in the field of the chemistry of targeting anticancer anthracycline derivatives. More particularly, it concerns doxorubicin (DOX) or its daunosamine modified derivatives (DM-DOX) linked covalently to analogs of peptide hormones such as L... | 02/06/2001 |
| 6160185 | Process for purification of methylal Provided is a process for high purification of methylal by removing water and methanol present as impurities from the methylal. The process for purification of methylal comprises subjecting a methylal gas containing water and methanol and a polyalkylene g... | 12/12/2000 |
| 6114302 | Fragrance pro-accords The present invention relates to perfume and fragrance pro-accords which are suitable for use in personal care and personal hygiene compositions as fragrance delivery systems. The pro-accords of the present invention slowly release fragrance raw materials... | 09/05/2000 |
| 6107525 | Process for the manufacture of hydroxycarbonyl compounds A propene ether is selectively oxidized to an aldehyde-masked 2-hydroxypropanal using a metal-containing oxidation catalyst.... | 08/22/2000 |
| 6087538 | Addition reaction of hydroxyl-containing compounds with alkynes or allenes Compounds of the formula I and II ##STR1## where R1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical or an acyl radical, it being possible for these radicals to carry further substituents which do ... | 07/11/2000 |
| 6043303 | Hexagonal crystals of diacetals, nucleating agent comprising said hexagonal crystal, polyolefin resin composition and molding containing said hexagonal crystals, and method for molding said composition This invention provides hexagonal crystals of a diacetal represented by the formula (1) ##STR1## wherein R1 and R2 each represents an alkyl group having 1 to 4 carbon, atoms or a halogen atom, each of m and n is an integer of 0 ... | 03/28/2000 |
