"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5861540 | Substituted 1,1,1-triaryl-2,2,2-trifuoroethanes and processes for their synthesis Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2 -trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cycli... | 01/19/1999 |
| 5672782 | Process for producing tertiary alcohol and for preparing catalyst therefor A process for producing a polymer having sulfonic acid groups is provided which comprises treating a polymer having sulfonate salt groups with a ion-exchange resin to change the sulfonate salt groups into sulfonate acid groups with porous-type strongly ac... | 09/30/1997 |
| 5599969 | Process of resolving phenylpropionic acids using -methylbenzylamine A process for the production of a product which is enriched in a desired enantiomer of a phenylpropionic acid selected from ibuprofen and flurbiprofen, or their pharmaceutically acceptable salts, which comprises a resolution stage, a recrystallization sta... | 02/04/1997 |
| 5596129 | Process and apparatus for producing aromatic carboxylic acid It is contemplated by the present invention to produce a high quality aromatic carboxylic acid by a liquid phase oxidation of an alkylbenzene by contacting it with a molecular oxygen-containing gas in a solvent containing a lower aliphatic carboxylic acid... | 01/21/1997 |
| 5583250 | Mixtures of isomeric decyl alcohols, phthalates obtainable therefrom, and their use as plasticizers Mixtures of isomeric decyl alcohols obtained by oligomerization of propylene in the presence of deactivated zeolites as catalysts, followed by separation of the nine carbon olefins from the oligomer mixture, then hydroformylation of the 9 carbon olefins t... | 12/10/1996 |
| 5580678 | Adhesive sealed solid electrolyte cell housed within a ceramic frame and the method for producing it A solid electrolyte cell and method for producing it in which the cell components are assembled within a ceramic frame which is sealed on the top to a first terminal of the cell using an adhesive and sealed on the bottom to a second terminal of the cell u... | 12/03/1996 |
| 5552162 | Method for improvement of scar size and appearance A method for improving the size and appearance of a scar associated with a fibromatosis, a keloid, or a hypertrophic wound healing disorder comprises stimulating collagenase activity in the scar. Preferably, stimulating collagenase activity is accomplishe... | 09/03/1996 |
| 5550160 | Metal complexes of hydroxyaryl containing aminocarboxylic acid chelating agents A physiologically acceptable, radiolabelled compound of general formula ##STR1## where k is an integer from 2 to 5 l is an integer from 1 to 5 X and Y are independently selected from phenyl or naphthyl radical each of which can be substituted by one or mo... | 08/27/1996 |
| 5536875 | Enhanced oxidation of organic chemicals Organic chemical oxidation reactions are carried out using pure or nearly pure oxygen and evaporative cooling. Advantageous operating results are achieved thereby, and the oxidation of organic chemicals resulting in the production of solid products or byp... | 07/16/1996 |
| 5534652 | Preparation of plasticizer esters from phthalic anhydride residue A process for the formation of esters from at least one phthalic anhydride residue stream produced from the vapor phase oxidation of o-xylene, naphthalene and/or the like which comprises: (a) adding a phthalic anhydride residue stream and a mono-alcohol t... | 07/09/1996 |
| 5532407 | Process for recovering L-phenylalanine An industrial process for recovering L-phenylalanine in high yield from a side stream obtained from -APM is disclosed. L-aspartic acid or an aqueous solution thereof is added to such a side stream when hydrolysis of the side stream is performed und... | 07/02/1996 |
| 5530141 | 2,4-diaryl-1,3-dithiolanes; 2,4-diaryl-1,3-dioxolanes; 2,4-diaryl-1,3-oxathiolanes; and 2,5-diaryl-1,3-oxathiolanes for the treatment of disorders mediated by platelet activating factor or products of 5-lipoxygenase 2,4-Diaryl-1,3-dithiolanes; 2,4-diaryl-1,3-dioxolanes; 2,4-diaryl-1,3-oxathiolanes; and 2,5-diaryl-1,3-oxathiolanes are disclosed that reduce the chemotaxis and respiratory burst leading to the formation of damaging oxygen radicals of polymorphonuclear le... | 06/25/1996 |
| 5527957 | Process for the production of terephthalic acid A terephthalic acid slurry in acetic acid is produced by oxidizing p-xylene in acetic acid, removing water by evaporation of a stream of water and acetic acid, and returning acetic acid to the oxidation step. The terephthalic acid is separated from the re... | 06/18/1996 |
| 5527956 | Process for the oxidation of aromatic methyl groups Fluro-substituted aromatic carboxylic acids, and particular 2- and 4-fluorobenzoic acid can be made from the corresponding fluoro-methyl compound such as fluorotoluene in a single stage by the reaction at elevated temperature, preferably of at least 80° ... | 06/18/1996 |
| 5525614 | Substituted 1,2,3,4-tetrahydroisoquinolines with angiotensin II receptor antagonist properties This invention relates to novel substituted 1,2,3,4-tetrahydroisoquinolines which are useful in the treatment of vascular restenosis, various disorders of the central nervous system, in the regulation of female reproductive functions, in cognitive enhance... | 06/11/1996 |
| 5525628 | Salts of a glutathione alkylester and anaminoacids Crystalline non-hygroscopic salt of glutathione alkylester of the formula (I) ##STR1## wherein AA is an amino acid are disclosed.... | 06/11/1996 |
| 5525629 | Inhibition of cytokine production Hydroxamic acid derivatives of formula (I): ##STR1## wherein R1 represents hydrogen or an (C1 -C6)alkyl, (C1 -C6)alkoxycarbonyl(C1 -C6)alkyl, phenyl, substituted phenyl, phe... | 06/11/1996 |
| 5523473 | Method of producing naphthalenedicarboxylic acids and diaryldicarboxylic acids A method of producing naphthalenedicarboxylic acids by the oxidation of dialkyl-substituted naphthalene with a gas containing molecular oxygen in an organic solvent and in the presence of a catalyst comprising copper and bromine, or a catalyst comprising ... | 06/04/1996 |
| 5523475 | New compounds The present invention relates to novel derivatives of 3-hydroxyanthranilic acid, 3-HANA, of the general formula I ##STR1## wherein R1 and R2 are the same or different and selected from H, alkyl, aryl and arylalkyl; X and Y are t... | 06/04/1996 |
| 5523465 | Process for producing an unsymmetrical diester of , ଲ-unsaturated dicarboxylic acid A process for producing a colorless unsymmetrical-diester of maleic acid, useful as a raw material of an emulsifier for emulsion polymerization and as a modifier for a polymer, which comprises: (1) reacting maleic anhydride with a monohydric alcohol in the pre... | 06/04/1996 |
| 5523280 | Phenylpyrazole fungicides Phenylpyrazoles of the formula: ##STR1## in which: X.dbd.H, hal, NO2, CN, SCN, alkyl (C1 -C4), alkenyl (C2 -C4), alkynyl (C2 -C4), alkoxy (C1 -C4), alk... | 06/04/1996 |
| 5523467 | Process for the preparation of aliphatic polyisocyanates A process is provided for the preparation of an aliphatic polyisocyanate. Upon reacting an aliphatic polyamine or its hydrochloride or carbonate with phosgene in an inert liquid medium, the reaction is conducted while charging an inert gas into a reaction... | 06/04/1996 |
| 5523434 | Synthesis of bleach activators The synthesis of phenol sulfonate esters of alkanoyl amino acids is conducted in the presence of aqueous base to provide bleach activator compounds. Thus, the acid chloride of N-nonanoyl-6-aminocaproic acid is reacted with the sodium salt of p-phenol sulf... | 06/04/1996 |
| 5516938 | Immunological detection method The present invention relates to monoclonal antibodies that are distinguished by a high degree of selectivity and affinity towards herbicides from the group of the sulfonylureas, especially towards sulfonylurea herbicides of formula (A) ##STR1## ... | 05/14/1996 |
| 5516934 | Process for producing mono-P-nitrobenzyl malonate The present invention aims at providing a process for economically producing mono-p-nitrobenzyl malonate while recovering the excessive malonic acid and treating the by-product. The process of the present invention for producing mono-p-nitrobenzyl malonat... | 05/14/1996 |
| 5516935 | Process for the production of diisocyanates Diisocyanates are produced by gas-phase phosgenation of aliphatic diamines having two primary amino groups in the 1,2- or 1,3-position to one another or by cycloaliphatic diamines having two primary amino groups in the 1,2- or 1,3-position to one another.... | 05/14/1996 |
| 5516948 | Process for making a mixture of isomeric decyl alcohols Mixtures of isomeric decyl alcohols obtained by oligomerization of propylene in the presence of deactivated zeolites as catalysts, followed by separation of the nine carbon olefins from the oligomer mixture, then hydroformylation of the 9 carbon olefins t... | 05/14/1996 |
| 5514713 | Amidinophenol derivatives Disclosed are amidinophenol derivatives of the formula (I) and acid-addition salts thereof (in which R1 and R2 are alkyl, alkoxy, acyl, halogen, nitro, benzoyl, COOR4 ; A is bond, alkylene, group of the formula (II); R | 05/07/1996 |
| 5510507 | Selective asymmetric hydrogenation of dehydroamino acid derivatives using rhodium and iridium diphosphinite carbohydrate catalyst compositions A process and catalyst composition are provided for the highly efficient enantioselective hydrogenation of dehydroamino acid derivatives. The catalyst composition comprises rhodium or iridium and a diphosphinite carbohydrate ligand, wherein the phosphorou... | 04/23/1996 |
| 5510521 | Process for the production of aromatic carboxylic acids Disclosed is an improved process for the continuous production of aromatic carboxylic acids by the liquid-phase oxidation of an alkyl aromatic compound with an oxygen-containing gas in the presence of oxidation catalyst which effectively utilizes the heat... | 04/23/1996 |
| 5508455 | Hydrolysis of methyl esters for production of fatty acids The present invention relates to an improved process for preparing fatty acids from alkyl, preferably methyl esters via acid hydrolysis by using ratios of water/ester/acid catalyst to form single phase reaction mixtures wherein the initial stoichiometric ... | 04/16/1996 |
| 5508308 | Use of pyruvylglycine to treat ischemia/reperfusion injury following myocardial infarction A therapeutic method is provided to reduce ischemia/reperfusion injury to the heart muscle by perfusing pyruvylglycine into the circulatory system of a patient who has had a heart attack or suffered coronary occlusion.... | 04/16/1996 |
| 5506239 | Carbostyril derivative and platelets aggregation inhibitory agent A carbostyril derivative or salt thereof of the formula ##STR1## the carbon-to-carbon bond between the 3- and 4-positions of the carbostyril skeleton being a single bond or a double bond. The carbostyril derivatives are useful as a platelets aggregat... | 04/09/1996 |
| 5504243 | Method for inhibiting polymerization of (meth) acrylic acid and esters thereof Disclosed herein is a method for inhibiting polymerizable (meth)acrylic acid and esters thereof from polymerizing during their production, transportation and storage by using as the inhibitor N-oxyl compound and more than one compound selected from the gr... | 04/02/1996 |
| 5502239 | Process for recovering dimethyl terephthalate A process for recovering dimethyl terephthalate (DMT) comprises the steps of: providing a dimethyl terephthalate stream including dimethyl terephthalate, glycols, and coordination compounds; acidifying the coordination compounds to disassociate the ligand... | 03/26/1996 |
| 5502238 | Process for the crystallization of aspartame The invention relates to a process for the crystallisation of aspartame by neutralising an aqueous solution of aspartame, having a pH of less than 3, with a base and homogenising the solution by means of forced convection, characterised in that the soluti... | 03/26/1996 |
| 5501919 | Solid ion conducting material, obtained from a polymer and an alkaline cation salt, with application as an electrolyte A solid ion conductor material is made from branched polyethylene imine and a lithium cation salt in such a manner that the ratio of the number of nitrogen atoms contained in the polymer to the number of lithium cations originating from the salt is optimi... | 03/26/1996 |
| 5502240 | Esterification process using a titamium zeolite catalyst A liquid phase esterification process is described wherein the esterification catalyst is a titanium zeolite.... | 03/26/1996 |
| 5502244 | Process for producing isocyanates Provided is a process for producing isocyanates from carbamic acid esters which comprises thermally decomposing carbamic acid esters in the presence of a catalyst containing at least one compound selected from the group consisting of organic sulfonic acid... | 03/26/1996 |
| 5502245 | Methods of making intermediate oxidation products by controlling transient conversion in an atomized liquid Methods of making intermediate oxidation products by atomizing a first liquid containing a reactant into a gas containing an oxidant in a manner to form an intermediate oxidation product different than carbon monoxide and/or carbon dioxide. The oxidation ... | 03/26/1996 |