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| Number | Title | Issue Date |
| 6518425 | Method of manufacture of 1,3-oxathiolane nucleosides Processes for the preparation of 1,3-oxathiolane nucleosides are provided that include efficient methods for the preparation of the 1,3-oxathiolane ring and subsequent condensation of the 1,3-oxathiolane with a pyrimidine or purine base. Using the process... | 02/11/2003 |
| 6348470 | Antitussive compositions The invention relates to the use of theobromine and/or its salts and/or its complexes optionally in admixture with other known active ingredients and inert solid or liquid carriers, additives and auxiliary agents for the manufacture of a pharmaceutical co... | 02/19/2002 |
| 5545835 | 5,6-disubstituted-3-pyridylmethyl ammonium halide compounds useful for the preparation of 5-(substituted methyl)-2,3-pyridinedicarboxylic acids There are provided 5,6-disubstituted-3-pyridylmethyl ammonium halide compounds, a method for the preparation thereof and the use thereof for the preparation of 5-(substituted methyl)-2,3-pylidinedicarboxylic acids.... | 08/13/1996 |
| 5399688 | Caffeine recovery from activated carbon The invention relates to a process for recovering caffeine from caffeine-loaded activated carbon and which is characterized in that the caffeine destroying activity of the activated carbon is reduced before or after loading with caffeine. The activated ca... | 03/21/1995 |
| 5378843 | 5,6-disubstituted-3-pyridylmethyl ammonium halide compounds useful for the preparation of 5-(substituted methyl)-2,3-pyridinedicarboxylic acids There are provided 5,6-disubstituted-3-pyridylmethyl ammonium halide compounds, a method for the preparation thereof and the use thereof for the preparation of 5-(substituted methyl)-2,3-pyridinedicarboxylic acids.... | 01/03/1995 |
| 5371221 | Process for recovery of caffeine from activated carbon The invention relates to a process for recovering caffeine from caffeine-loaded activated carbon using a circulated inert gas sweeping stream held at a temperature of 250° to 460° C., in which process the activated carbon is preheated prior to the desor... | 12/06/1994 |
| 5298621 | Oligopeptide derivatives of ipoxantine endowed with immunomodulating activity and pharmaceutical compositions containing same Ipoxantine derivatives of general formula (I): ##STR1## both as racemate and chiral forms and the salts thereof with pharmacologically acceptable cations, wherein n is an integer comprised between 2 and 6, and A is the residue of a dipeptide, tripept... | 03/29/1994 |
| 5288866 | 5,6-disubstituted-3-pyridylmethyl ammonium halide compounds useful for the preparation of 5- (substituted methyl)-2,3-pyridinedicarboxylic acids There are provided 5,6-disubstituted-3-pyridylmethyl ammonium halide compounds, a method for the preparation thereof and the use thereof for the preparation of 5-(substituted methyl)-2,3-pyridinedicarboxylic acids.... | 02/22/1994 |
| 5260437 | Recovery of caffeine from tea trimmings and vegetable wastes Tea trimmings and wastes are dried and then burned either directly or indirectly to liberate caffeine which is recovery by water scrubbing or electrostatic precipitation. The crude caffeine is then concentrated and purified by crystallization for use in f... | 11/09/1993 |
| 5219858 | Method and compositions for effecting withdrawal from drug dependency Methods and compositions are provided for treating drug-dependent individuals so as to effect withdrawal from the drug of abuse, e.g., natural and synthetic narcotics, or stimulant-type drugs such as cocaine, amphetamines, nicotine, or the like. The metho... | 06/15/1993 |
| 5141941 | Aralkylamine derivatives, and fungicides containing the same Disclosed are a compound of the formula (I) or an acid addition salt thereof: ##STR1## wherein Q represents R1 , R2, R3, R4, R5, R6, n and z are defined as in the specification, prepar... | 08/25/1992 |
| 4957921 | Substituted cyclohexanols as central nervous system agents Substituted cyclohexanols are described, as well as methods for the preparation and pharmaceutical composition of same, which are useful as central nervous system agents and are particularly useful as dopaminergic, antipsychotic, and antihypertensive agen... | 09/18/1990 |
| 4921632 | Liquid crystal compounds and compositions Liquid Crystal compounds represented by the following formula are disclosed. ##STR1## wherein R and R' are independently selected from alkyl groups containing 1~20 carbon atoms; X is --O--, --O--CO--O-- or direct bond; A1 and A2 | 05/01/1990 |
| 4877631 | Process for recovering caffeine absorbed in activated carbon, and a process for decaffeinating coffee A process for recovering from caffeine-loaded activated carbon by treatment f the loaded carbon with an acid. According to the present invention, activated carbon is treated with a compound having the formula ##STR1## wherein R1 is methyl, ... | 10/31/1989 |
| 4818552 | Process for recovering caffeine adsorbed to activated carbon This invention relates to a process for recovering caffeine from laden acated carbon by treating the laden activated carbon with an organic acid. In order to achieve good extraction efficiencies, on the one hand, and to avoid problems with the flash poin... | 04/04/1989 |
| 4758662 | Purification of caffeine A process for the purification of caffeine which comprises carrying out the following steps in any order; (a) recrystallization of caffeine from an aqueous alkaline solution of caffeine containing a reducing agent and (b) extraction of the caffeine from an aqu... | 07/19/1988 |
| 4673743 | Process for separating caffeine from caffeine-loaded active carbon The invention relates to a process for separating caffeine from caffeine-loaded active carbon in which a circulated inert gas sweeping stream is passed rectangularly through the stream of active carbon at a temperature of 350° to 450° C., and the caffei... | 06/16/1987 |
| 4540784 | Recovery of caffeine adsorbed to activated carbon The invention relates to a process for recovering caffeine adsorbed to activated carbon by treating the loaded activated carbon with formic acid.... | 09/10/1985 |
| 4531003 | Purification of caffeine A process for the purification of caffeine which comprises carrying out the following steps in any order; (a) recrystallization of caffeine from an aqueous alkaline solution of caffeine containing a reducing agent and (b) extraction of the caffeine from an aqu... | 07/23/1985 |
| 4513136 | Process for recovering caffeine from activated carbon The recovery of caffeine from activated carbon is accomplished according to the present invention by employing an aqueous acetic acid solution, preferably having a concentration of between about 50 and 80%, by weight, and which is capable of competing for... | 04/23/1985 |
| 4506072 | Regeneration of caffeine-loaded activated carbon with hot water The invention relates to a process for recovering caffeine adsorbed to activated carbon with simultaneous regeneration of the activated carbon in which the caffeine-loaded activated carbon is treated with water at a pressure of at least 86 bar and at a te... | 03/19/1985 |
| 4472442 | Decaffeination process The process described herein improves the decaffeination of both wet and dry green coffee beans with a liquid or supercritical carbon dioxide extractant by dissolving dimethyl sulfoxide in the extractant prior to contact with the beans. Rates of extractio... | 09/18/1984 |
| 4472443 | Aprotic solvent decaffeination The process disclosed herein is capable of decaffeinating green coffee beans at a moisture content near that employed for shipping and storage. The green coffee beans are contacted with dimethyl sulfoxide, an aprotic solvent, to remove at least a portion ... | 09/18/1984 |
| 4465699 | Decaffeination process A process for producing a decaffeinated vegetable material, such as coffee or tea in aqueous extract or solid form, for use in preparation of beverages, which comprises: (a) contacting a caffeine-containing composition with a liquid, water-immiscible fatt... | 08/14/1984 |
| 4453007 | Method for increasing the purity of amphoteric compound compositions Provided is a method of increasing the purity of amphoteric compound compositions. The method is: (a) providing an amount of a crude amphoteric compound composition, (b) using a portion of the crude composition to prepare in solution a cationic salt of th... | 06/05/1984 |
| 4443601 | Recovery of caffeine from caffeine adsorbents Caffeine adsorbed on caffeine adsorbents is recovered by contacting the carbon with a solvent, preferably an aqueous solution of ethylene carbonate or propylene carbonate. The caffeine adsorbent is contacted with the solvent for a period time sufficient t... | 04/17/1984 |
| 4380631 | Preparation of caffeine Caffeine is prepared from theophylline, carbon monoxide and methanol.... | 04/19/1983 |
| 4376767 | Pyridylmethyl esters of selected bio-affecting carboxylic acids Novel pharmaceutically useful derivatives of selected known bio-affecting carboxylic acids are disclosed, said derivatives having the structural formula ##STR1## wherein R1 and R2, which can be the same or different, are each ... | 03/15/1983 |
| 4347185 | Processes for preparing 5-benzoyl-7-halo-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acids 5-benzoyl-7-halo-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acids, represented by the formula ##STR1## and the pharmaceutically acceptable non-toxic esters and salts thereof, wherein: R is hydrogen or lower alkyl; X is hydrogen, lower alkyl, l... | 08/31/1982 |
| 4344943 | 6-Chloro- or 6-bromo-1,2-dihydro-3H-pyrrolo[1,2-a]-pyrrole-1-carboxylic acids and derivatives thereof Novel 5-aroyl-6-chloro- or 6-bromo-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-7-carboxylic acids represented by the formula ##STR1## and the pharmaceutically acceptable, non-toxic esters and salts thereof, wherein Y is chloro or bromo and Ar is an opt... | 08/17/1982 |
| 4298736 | Carbon-caffeine separation The object of the invention is to provide an improved process for recovering caffeine adsorbed on activated carbon. Caffeine removed from the commercial decaffeination of vegetable materials and extracts can be effectively removed from the extraction solvent, ... | 11/03/1981 |
| 4237288 | Decaffeination of fatty materials A process is disclosed wherein the decaffeination of solutions of caffeine in fatty media is effected with hydrophilic, phenol/formaldehyde polymeric resins having phenolic functional groups. In particular, the solutions are contacted with resin to effect... | 12/02/1980 |
| 4113886 | Membrane decaffeination Aqueous vegetable extracts such as extracts of tea or green or roasted coffee are decaffeinated by permitting caffeine to diffuse through at least one porous, hydrophilic membrane and a water-immiscible solvent phase and into a water phase. The solvent ma... | 09/12/1978 |
| 4081563 | Decaffeination of green coffee A water extract of green coffee beans is dried and this dried powder is extracted with a solvent for caffeine such as ethanol. The decaffeinated solids are rehydrated and either reincorporated into the water-extracted green coffee which is then roasted an... | 03/28/1978 |
| 4059611 | Oxidative process for the preparation of 2-(5H-dibenzo[a,d]cyclohepten-5-on-2-yl)acetic, propionic and butyric acid 2-(5H-Dibenzo[a,d]cyclohepten-5-on-2-yl) acetic, propionic and butyric acid, and esters and salts thereof, are prepared by oxidation of non-ketonic intermediates.... | 11/22/1977 |
| 4041173 | 2-Carboxy-(7-,8- and 9-substituted)-5-oxo-5H-dibenzo (a,d) cycloheptenes and the corresponding 10,11-dihydro compounds A compound selected from the group of compounds represented by the formula ##STR1## R is hydrogen, alkyl having 1 to 12 carbon atoms, or ##STR2## where n is an integer of 2 to 4 inclusive and R4 and R5 are independently low... | 08/09/1977 |
| 4035509 | Methods and compositions for the use of 2-carboxy-5-oxo-5H-dibenzo[a,d]cycloheptenes, salts and esters thereof 2-Substituted-5-oxo-5H-dibenzo[a,d]cycloheptenes represented by the following formula: ##STR1## where R' is hydrogen, alkyl having 1 to 12 carbon atoms, or ##STR2## where n is an integer from 2 to 4, inclusive, and R4 and R5 | 07/12/1977 |
| 3997587 | D1- and 8R-9-fluoro-prostadienoic acid derivatives d1- and 8R-9-fluoro-11,15-dihydroxyprosta-5-cis,13-trans-dienoic acid, d1- and 8R-9-fluoro-11,15-dihydroxy-15ଲ-methyl-prosta-5-cis,13-trans-d ienoic acid and d1- and 8R-9-fluoro-11,15ଲ-dihydroxy-15-methylprosta-5-cis,1... | 12/14/1976 |
| 3980699 | 2-Naphthyl acetic acid derivatives 2-Naphthyl acetic acid derivatives and the corresponding amides, esters, hydroxamic acids and addition salts thereof, optionally substituted at the -position on the acetic acid moiety and/or at position 6 and/or at positions 1, 4, 7 or 8 on the nap... | 09/14/1976 |
| 3979430 | Solvolytic process for the preparation of 2-(5H-dibenzo[a,d]cyclohepten-5-on-2-yl)acetic, propionic and butyric acids 2-(5H-dibenzo[a,d]cyclohepten-5-on-2-yl) acetic, propionic and butyric acids, and esters and salts thereof, are prepared by solvolysis of nitrile or amide intermediates, or of ketal-protected nitrile, amide, acid, ester or salt intermediates.... | 09/07/1976 |
