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 |
| 7196226 | Fluoraminoolefins and fluorination reagents which can be prepared therefrom The present invention relates to fluorination reagents comprising 1-fluoro-1-aminoolefins and also processes for preparing fluorination reagents comprising 1-fluoro-1-aminoolefins. ... | 03/27/2007 |
| 7045662 | α, α-difluoroamines and difluoromethylene-α, α-diazo compounds The present invention relates to a process for preparing α,α-difluoroamines, difluoromethylene-α,α-diazo compounds and fluorination reagents containing α,α-difluoroamines and/or difluoromethylene-α,α-diazo compounds. ... | 05/16/2006 |
| 6906224 | Process for producing α-aminoketones A process for producing α-aminohalomethyl ketones or N-protected α-aminohalomethyl ketones from specified 3-oxazolidin-5-one derivatives via 5-halomethyl-5-hydroxy-3-oxazolidine derivatives. By this process, α-aminohalomethyl ketones and compounds relating to the... | 06/14/2005 |
| 6570039 | Process for producing -aminoketones A process for producing -aminohalomethyl ketones or N-protected -aminohalomethyl ketones from specified 3-oxazolidin-5-one derivatives via 5-halomethyl-5-hydroxy-3-oxazolidine derivatives. By this process, -aminohalomethyl ketones and... | 05/27/2003 |
| 5753776 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 05/19/1998 |
| 5674949 | Liquid-phase fluorination This invention pertains to a method for liquid-phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/07/1997 |
| 5599587 | Phosphoric acid esters and their use in the preparation of biocompatible surfaces A process for the preparation of compounds of formula (I) in which Z is hydrogen or --NHZ is an activated amine group capable of reacting with a surface, the groups R are the same or different and each is a straight or branched C1 -C4 | 02/04/1997 |
| 5461117 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/24/1995 |
| 5332790 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 07/26/1994 |
| 5322903 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5322904 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5227527 | Process for the preparation of 3'-aminopropyl 2-chloroethyl sulfone semisulfate A process for the preparation of 3'-aminopropyl 2-chloro- ethyl sulfone semisulfate in very good yield and high purity, by reacting allylamine with mercaptoethanol in a one-pot process in about 0.5 to about 0.6 mol of dilute sulfuric acid, relative to all... | 07/13/1993 |
| 5214214 | Perfluoro branched alkyl ethers and emulsions There is provided a novel perfluorochemical represented by the formula, ##STR1## wherein RF is a perfluoroalkyl group, a perfluoro alkoxyalkyl group or a perfluoroalkyloxy group, X and X' are same as or different from each other and are a ... | 05/25/1993 |
| 5093432 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 03/03/1992 |
| 5068443 | Process for the manufacture of 2,6-dichloro-4-nitroaniline The present invention is directed to a process for the chlorination of nitroaniline compounds with Cl2 in a reaction medium containing acetic acid. A process for the chlorination of nitroaniline with Cl2 in a reaction medium which ha... | 11/26/1991 |
| 4983747 | Process for preparation of perfluoro organic compounds Disclosed is a process for the preparation of a perfluoroorganic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting reac... | 01/08/1991 |
| 4943595 | Perfluorochemicals and process for preparing the same There is provided a novel perfluorochemical represented by the formula, ##STR1## wherein RF is a perfluoroalkyl group, a perfluoro alkoxyalkyl group or a perfluoroalkyloxy group, X and X' are same as or different from each other and are a ... | 07/24/1990 |
| 4668830 | Process for the preparation of compounds containing a difluoromethylene or trifluoromethyl group A process for the preparation of compounds containing a difluoromethylene or trifluoromethyl group. A compound containing a carbonyl group, preferbly an acid, acid halide, amide, ketone or any compound containing a perhaloalkylcarbonyl moiety is placed, i... | 05/26/1987 |
| 4503249 | Hydrogenation catalysts Iron (II) hexacyanocobaltate and ruthenium (III) hexacyanocobaltate have been found to be useful in the catalytic hydrogenation of organic materials.... | 03/05/1985 |
| 4430514 | Novel method for the preparation of CF3 NF2 A novel method is provided for the preparation of difluoramino trifluoromane by the direct fluorination of azidotrifluoromethane in the temperature range of 70° C. to 80° C. A potassium fluoride catalyst also may enhance the rate of reaction and increa... | 02/07/1984 |
| 4289906 | Chemical process for preparing methylene bis-anilines Aromatic amine hydrochloride having an unsubstituted ortho or para position reacts with dimethylsulfoxide forming methylenebis aromatic amine.... | 09/15/1981 |
| 4269788 | Phenyl-cyclohexadiene-alkylamine derivatives Cyclohexadiene derivatives of the formula ##STR1## wherein R1,R2,R3 and R4 are as hereinafter set forth, are described. The compounds of formula I are useful as analgesic agents.... | 05/26/1981 |
| 4104307 | Process for preparing 2-aminoalkyl halide bisulfate salts An improved process for preparing 2-aminoalkyl halide bisulfate salts comprises reacting dry hydrogen halide with 2-aminoalkyl monosulfate esters. The 2-aminoalkyl halide bisulfate salts resulting therefrom are produced in high yields and are used industr... | 08/01/1978 |
| 4096180 | Fluorodehydroxylation of serine Organic compounds containing one or more alcoholic hydroxyl groups are transformed into fluorine compounds by reacting them with sulfur tetrafluoride in liquid hydrogen fluoride solution, at temperatures between around -80° C. and +20° C. The method can... | 06/20/1978 |
