Bizarre Patents
A fork with timer for providing a cue to a user after an elapsed period of time for indicating that another bite of food using the fork may be taken.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7642374 | Process for producing 5-iodo-2-methylbenzoic acid The present invention provides a process for producing 5-iodo-2-methylbenzoic acid through iodination of 2-methylbenzoic acid, the process including, as essential steps, a reaction step of iodinating 2-methylbenzoic acid in the presence of a microporous compound, io... | 01/05/2010 |
| 7402694 | Process for removal of benzoic acid from an oxidizer purge stream A process is disclosed that relates to the removal of impurities, specifically benzoic acid, from a mother liquor produced in the synthesis of carboxylic acid, typically terephthalic acid. ... | 07/22/2008 |
| 7288322 | Self-adhesive, addition cross-linking silicone-rubber blends, method for their production, method for producing composite molded parts and use of the latter Self-adhesive, addition cross-linking silicone-rubber blends which have good adhesion to substrates but which release from molds used to prepare molded parts from them. ... | 10/30/2007 |
| 7282151 | Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration A process is disclosed that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves recovery of a metal catalyst from an oxidizer purge st... | 10/16/2007 |
| 7253299 | Process for purifying n2-(1(s)-ethoxycarbonyl-3-phenylpropyl)-n6-thifluoroacetyl-l-lysine A process for purifying N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-lysine which comprises subjecting N2-(1(S)-ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-lysine contaminated with impurities to cry... | 08/07/2007 |
| 6777213 | Isolation of carboxylic acids from fermentation broth A process for recovering carboxylic acids from an aqueous mixture such as a fermentation broth using a solvent containing at least one olefin without the need for first removing the spent microorganism cells is provided. A co-solvent which increases the partition co... | 08/17/2004 |
| 6660505 | Isolation of carboxylic acids from fermentation broth A process for recovering carboxylic acids from an aqueous mixture such as a fermentation broth using a solvent containing at least one olefin without the need for first removing the spent microorganism cells is provided. A co-solvent which increases the p... | 12/09/2003 |
| 6642412 | Process for producing a high purity aromatic polycarboxylic acid A process for producing a high purity aromatic polycarboxylic acid by purifying a crude aromatic polycarboxylic acid in accordance with the steps of (I) forming an amine salt of an aromatic polycarboxylic acid from the crude polycarboxylic acid and an ami... | 11/04/2003 |
| 6639104 | Process for the recovery of purified terephthalic acid (PTA) A process for the preparation of purified terephthalic acid which comprises first introducing a liquid slurry containing crystalized terephthalic acid with impurities into a high pressure rotary filter, then filtering the slurry with the high pressure rot... | 10/28/2003 |
| 6548695 | Process for producing isocoumarins and intermediates for the same Provided is a process for producing an isocoumarin-3-yl-acetic acid derivative, characterized by reacting a homophthalic acid derivative represented by a formula: ##STR1## (wherein Rc, R2 and R are mainly protecting groups) with a ... | 04/15/2003 |
| 6491795 | Process for recovering benzyl benzoate High-purity benzyl benzoate is recovered by distilling the residue remaining after removal of unreacted toluene and benzoic acid from a reaction mixture produced by the oxidation of toluene by molecular oxygen in the presence of a metal catalyst thereby s... | 12/10/2002 |
| 6455731 | Process for producing a high purity aromatic polycarboxylic acid A process for producing a high purity aromatic polycarboxylic acid by purify a crude aromatic polycarboxylic acid in accordance with the steps of (I) forming an amine salt of an aromatic polycarboxylic acid from the crude polycarboxylic acid and an amine,... | 09/24/2002 |
| 6441225 | Purification of aromatic diacids A method is provided to produce dicarboxylic or tricarboxylic aromatic acid from salts of such acids, the method including the steps of providing an aqueous solution of a salt of a dicarboxylic or tricarboxylic aromatic acid, the aqueous solution having a... | 08/27/2002 |
| 6437179 | Process for the preparation of fluorogenic phenolic compounds A method is disclosed for preparing a fluorogenic phenolic compound with improved optical qualities for use in formulating a substrate solution for assay of peroxidase or peroxide activity. The method involves forming a solution under anoxic conditions wh... | 08/20/2002 |
| 6437176 | Method for preparing aromatic carboxylic acids, aromatic aldehydes, and aromatic alcohols An aromatic carboxylic acid, aromatic aldehyde, and aromatic alcohol are simultaneously and efficiently prepared by liquid phase oxidizing an aromatic compound represented by formula (I) with a gas containing molecular oxygen, in a presence of a catalyst ... | 08/20/2002 |
| 6403828 | Method of refining crystalline material This invention relates to a process for purifying crystalline substances by charging the feed crystals containing impurities in a solid state to the top of a tower-type continuous crystallizer equipped with an agitating device, bringing said solid feed cr... | 06/11/2002 |
| 6399790 | Method for oxidation of xylene derivatives Xylene derivatives, such as chloro-ortho-xylene, are oxidized in a solvent in the presence of at least one metal catalyst and optionally at least one promoter. The product comprises chlorophthalic acid or chlorophthalic anhydride.... | 06/04/2002 |
| 6344568 | Catalyst for gas phase partial oxidation This invention relates to a method for producing a partially oxidized organic compound, e.g., an unsaturated aldehyde/carboxylic acid having three or more carbon atoms, or an organic acid anhydride/nitrile compound having four or more carbon atoms. This m... | 02/05/2002 |
| 6342636 | Process for preparing optically active amines and optically active carboxylic acids, and intermediates for preparation Disclosed is a process for preparing an optically active 1-aryl- or 2-aryl-alkylamines of formulas Ia, Ib and Ic with high optical purity and high yield. The process uses an optically active 1- or 2-naphthylglycolic acid of the general formula II as a res... | 01/29/2002 |
| 6307091 | Trifluoro-substituted benzoic acid, esters thereof and processes for preparing the same The present invention is to provided a trifluoro-substituted benzoic acid, an ester thereof, particularly 2,3,4-trifluoro-5-iodobenzonic acid, 2,3,4-trifluoro-5-trifluoromethylbenzonic acid, esters thereof, which are useful as a starting material for synt... | 10/23/2001 |
| 6255525 | Process for preparing purified carboxylic acids A process for preparing an aromatic carboxylic acid having improved purity comprising contacting at an elevated temperature and pressure a mixture comprising an impure aromatic carboxylic acid and a solvent in the presence of hydrogen gas with a carbon ca... | 07/03/2001 |
| 6254779 | Treatment of effluent streams containing organic acids An acidic organics-containing waste water stream (12) derived from for example plant for the production of an aromatic carboxylic acid such as terephthalic acid is treated to allow recovery of alkali and water for recycle to the production process. The tr... | 07/03/2001 |
| 6248797 | Supercritical carbon dioxide extraction of contaminants from ion exchange resins A method for extracting leachable contaminants from ion exchange resins comprises exposing the resin to supercritical carbon dioxide for a sufficient interval of time to allow at least a portion of the leachable contaminant to be solubilized by the superc... | 06/19/2001 |
| 6211404 | Method of refining benzoic acid This invention relates to a process for purifying benzoic acid continuously to a purity of 99.9% or more by introducing crystals of crude benzoic acid with a bulk density of 0.2 g/cm3 or more and an average particle diameter of 0.3 mm or more i... | 04/03/2001 |
| 6160171 | Trifluoro-substituted benzoic acid, esters thereof, and process for producing the same The present invention is to provide a trifluoro-substituted benzoic acid, an ester thereof, particularly 2,3,4-trifluoro-5-iodobenzoic acid, 2,3,4-trifluoro-5-trifluoromethylbenzoic acid, esters thereof, which are useful as a starting material for synthes... | 12/12/2000 |
| 6093830 | Enantioselective resolution process for arylpropionic acid drugs from the racemic mixture The invention relates to a novel non-catalytic enantioselective resolution process for the separation of enantiomer of arylpropionic acid drugs from the racemic mixture, which comprises dissolving the racemic mixture of the said drug an organic solvent, r... | 07/25/2000 |
| 5994560 | Resolution of racemic mixtures using polymers containing chiral units Described herein is a novel process to resolve a racemic compound into its optically active isomers without need for chemical transformation such as salt formation. The process advantageously utilizes polymers containing chiral moieties in their repeat un... | 11/30/1999 |
| 5843863 | Process for improving flow characteristics of crystalline ibuprofen A process for producing crystalline ibuprofen having a crystal habit characterized by a particle length larger than 75 microns average and a length to width aspect ratio of greater than about 4 to 1 to about 5 to 1. The process involves crystallizing ibup... | 12/01/1998 |
| 5739383 | Resolution of racemic mixtures using polymers containing chiral units Described herein is a novel process to resolve a racemic compound into its optically active isomers without need for chemical transformation such as salt formation. The process advantageously utilizes polymers containing chiral moieties in their repeat un... | 04/14/1998 |
| 5543564 | Process for releasing acidic organic compounds from salts thereof by carbon dioxide This invention embodies a process for releasing acidic organic compounds in high yield and good purity from aqueous solutions of their salts which comprises converting the salts by carbon dioxide to their corresponding free acidic organic compounds and me... | 08/06/1996 |
| 5426215 | Process for converting [R(-)-2(3-benzoylphenyl)-propionic acid to the S(+) isomer] Process for transforming (benzoyl-3-phenyl)-2-propionic-R(-) acid into an S(+) isomer through the action of a base either in situ during the splitting of racemic ketoprofen or on the crystallization mother liquor of a (benzoyl-3-phenyl)-2-propionic-S(+) a... | 06/20/1995 |
| 5399707 | Selective precipitation of -aryl carboxylic acid salts A process is provided whereby S(+)-ibuprofen or R(-)-ibuprofen L-lysinate salt is produced by selective precipitation from a mixture containing enantiomers of ibuprofen and L-lysine. The quantity of L-lysine is not more than about a molar equivalent of th... | 03/21/1995 |
| 5384413 | Process for the preparation of tetrafluorophthalic acid and/or tetrafluorophthalic anhydride The present invention relates to a process for the preparation of tetrafluorophthalic acid and/or tetrafluorophthalic anhydride by reacting a compound of the formula ##STR1## in which X is a radical ##STR2## which is optionally mono- or pol... | 01/24/1995 |
| 5364962 | Method for purification of a benzoic acid The invention relates to a method for the purification of benzoic acid, which is obtainable through oxidation of the corresponding toluene derivative, by treating it with a --NH2 or --NHR containing component in which R represents a carbon cont... | 11/15/1994 |
| 5352825 | Recovery of organic acid salts from impure process streams by addition of bases This invention provides an improved method for recovering an organic acid as a salt from various process streams by addition of a crystallizing base to a concentrated solution of neutralized organic acid. The addition of such a base causes crystallization... | 10/04/1994 |
| 5352823 | Process for improving flow characteristics of crystalline ibuprofen A process for producing crystalline ibuprofen having a crystal habit characterized by a particle length larger than 75 microns average and a length to width aspect ratio of greater than about 4 to 1 to about 5 to 1. The process involves crystallizing ibup... | 10/04/1994 |
| 5336806 | Purification of 2,4,5-trifluorobenzoic acid Disclosed is a process for isolating and purifying 2,4,5-trifluorobenzoic acid from a solution in a decarboxylating solvent such as NMP. The solution is neutralized with a hydroxide. This results in the formation of a salt of the 2,4,5-trifluorobenzoic ac... | 08/09/1994 |
| 5324750 | Compositions and methods for drug delivery and chromatography Cyclodextrin derivatives and inclusion complexes having increased solubility and stability are provided. Cyclodextrin derivatives include amino and other modified cyclodextrins, and linked cyclodextrins. Inclusion complexes comprising the foregoing cyclod... | 06/28/1994 |
| 5254714 | Hydrogenation of aromatic-substituted olefins using organoruthenium catalyst A process is disclosed for the enantioselective hydrogenation of olefins of the formula: ##STR1## where R is hydrogen or C1 to C6 linear or branched alkyl, Z is ##STR2## where R' is hydrogen or C1 to C6 | 10/19/1993 |
| 5233085 | Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,4,6-trifluorophthalic acid 3,4,6-Trifluorophthalic acid may be decarboxylated in a controlled manner to form 2,4,5-trifluorobenzoic acid by heating the phthalic acid in a dipolar aprotic solvent in the absence of any catalyst.... | 08/03/1993 |
