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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 6863782 | Method of preparing di(ketene acetals) Di(ketene acetals) are prepared by photoisomerizing the corresponding di(vinyl acetals). ... | 03/08/2005 |
| 6544390 | Microwave assisted rapid and economical process for the preparation of substituted phenylaldehydes from trans and cis-phenylpropenes: a commercial utilisation of toxic cis-isomer The present invention provides microwave assisted rapid and economical process for the preparation of substituted phenylaldehydes from trans and cis-phenylpropene, a commercial utilization of toxic cis-isomer of the general formula (I) ##STR1## using... | 04/08/2003 |
| 6348631 | Method for acylation or sulphonylation of an aromatic compound The present invention relates to a process for the acylation or sulphonylation of an aromatic compound. More particularly, the invention relates to a process for the acylation or sulphonylation of an activated or deactivated aromatic compound. The invention is... | 02/19/2002 |
| 6274005 | Method for the preparation of hexafluoroacetone A process for preparing hexafluoroacetone comprising the reaction of 2-chloro-1,1,1,3,3,3-hexafluoropropane [R226da] with oxygen in the presence of actinic light.... | 08/14/2001 |
| 6150562 | Selective thermal oxidation of hydrocarbons in zeolites by oxygen A process for selective thermal oxidation of hydrocarbons adsorbed onto zeolite matrices. A highly selective thermal oxidation of unsubstituted or alkyl substituted alkanes, alkenes, aromatics and cycloalkyls is carried out in solvent free zeolites under ... | 11/21/2000 |
| 5827406 | Selective photooxidation of hydrocarbons in zeolites by oxygen A selective photooxidation process for the conversion of hydrocarbon molecules to partially oxygenated derivatives, which comprises the steps of adsorbing a hydrocarbon and oxygen onto a dehydrated zeolite support matrix to form a hydrocarbon-oxygen conta... | 10/27/1998 |
| 5441612 | Radiation-enhanced recovery of maltol The yield and recovery of desirable aromatic principles such as maltol, from source material and especially from plant material, are improved by irradiating the source material with gamma radiation and then extracting from the irradiated material a produc... | 08/15/1995 |
| 5391273 | Process for the preparation of a solution containing semitrichinoyl A process for the preparation of a stable solution of semitrichinoyl is disclosed. A solution of rhodizonic acid and a solution of trichinoyl octahydrate is mixed and subjected to the action of light. The solutions of rhodizonic acid and trichinoyl occtah... | 02/21/1995 |
| 5358611 | Method of reducing impurities in aqueous monomer solutions A method of reducing the levels of impurities in aqueous monomer solutions is provided. Subjecting aqueous monomer solutions to ultraviolet radiation for from about 2 minutes to about 5 hours, reduces the level of impurities, especially carbonyl-compounds... | 10/25/1994 |
| 5348631 | Method and apparatus for synthesizing lead ଲ-diketonates A method and apparatus for the synthesis of ଲ-diketonates such as Pb(fod)2 and Pb(thd)2 for use as precursors in metalorganic chemical vapor deposition processes. Lead oxide and a medium of pentane and a protonated ligand (H-fo... | 09/20/1994 |
| 5302277 | Process for producing paraformaldehyde of high formaldehyde content Paraformaldehyde of high formaldehyde content is produced by cooling and solidifying a 78-83 wt. % aqueous formaldehyde solution, and drying the resulting paraformaldehyde by means of microwave heating.... | 04/12/1994 |
| 5233054 | Process for the preparation of halophthalic anhydrides Halophthalic anhydrides are prepared by the liquid phase reaction of a brominating agent with halogen substituted hexa- or tetra-hydrophthalic anhydrides.... | 08/03/1993 |
| 5215634 | Microwave induced catalytic conversion of methane and a hydrating agent to C3 oxygenates A process is provided for selectively converting methane and a hydrating agent to C3 to oxygenates. More particularly, methane is reacted with water in the presence of a nickel metal powder catalyst using microwave irradiation to produce aceton... | 06/01/1993 |
| 5141627 | Chelators whose affinity for calcium ion is increased by illumination The present invention relates to a group of organic chelators whose affinity for calcium ion in solution is increased by electromagnetic radiation. Specifically, the chelators are related to BAPTA and utilize the addition of an electron-withdrawing group ... | 08/25/1992 |
| 5104503 | Photochemical dimerization of organic compounds At least one of selectivity and reaction rate of photosensitized vapor phase dimerizations, including dehydrodimerizations, hydrodimerizations and cross-dimerizations of saturated and unsaturated organic compounds is improved by conducting the dimerizatio... | 04/14/1992 |
| 5098535 | Process for preparing 14--hydroxy-4-androstene-3,6,17-trione A process for the preparation in high yield of 14-hydroxy-4-androstene-3,6,17-trione which has an aromatase inhibition activity and is useful as an antitumor agent, in which the 6ଲ-hydroxyl group of 6ଲ, 14-dihydroxy-4-andros... | 03/24/1992 |
| 4976834 | Asymmetric photochemical reaction process An optically active substance having an optical purity of at least 50% e.e. is obtained by an asymmetric photochemical reaction by converting a starting, achiral material in a chiral crystalline form and irradiating light to the chiral crystalline form to... | 12/11/1990 |
| 4952291 | Process for the purification of aldehydes An aldehyde in a mixture containing hemiacetals and hydrates of the aldehyde is purified by treating the mixture with an effective amount of microwave radiation to decompose the hemiacetals and hydrates. Liberated water and/or alcohol is immediately remov... | 08/28/1990 |
| 4944853 | Photochemical preparation of 3-(organothio) aldehydes A process is disclosed for the preparation of 3-(organothio)aldehydes by reacting a mercaptan with an , ଲ-unsaturated aliphatic aldehyde under actinic radiation in the absence of an oxygen-containing gas wherein the mercaptan and aldehyde are... | 07/31/1990 |
| 4943358 | Oxidation process It is desired to find an alternative way to produce benzophenones or substituted benzophenones which does so selectively and avoids the problems of previous methods that use, for example, large amounts of an aluminium chloride catalyst or nitric acid. In ... | 07/24/1990 |
| 4940520 | Process for the preparation of 4-acyloxyazetidin-2-one by singlet oxygen oxidation The 4-acyloxyazetidin-2-ones, which are intermediates in the production of carbapenems and penems, are produced from 4-furanylazetidin-2-ones by singlet oxygen oxidation.... | 07/10/1990 |
| 4917784 | Process for light-driven hydrocarbon oxidation at ambient temperatures A photochemical reaction for the oxidation of hydrocarbons uses molecular oxygen as the oxidant. A reductive photoredox cycle that uses a tin(IV)- or antimony(V)-porphyrin photosensitizer generates the reducing equivalents required to activate oxygen. Thi... | 04/17/1990 |
| 4900413 | Process for direct carbonylation of hydrocarbons A process is disclosed, for the manufacture of carbonylated products and/or olefins by reacting hydrocarbons with carbon monoxide in the presence of a transition metal complex, under irradiation with light.... | 02/13/1990 |
| 4874488 | Photochemical dimerization and functionalization of alkanes, ethers, primary and secondary alcohols, phosphine oxides and silanes The space-time yield and/or the selectivity of the photochemical dimerization of alkanes, ethers, primary and secondary alcohols, phosphine oxides and primary, secondary and tertiary silanes with Hg and U.V. light is enhanced by refluxing the substrate in... | 10/17/1989 |
| 4849076 | Continuous oxidation method A method for oxidizing a substrate which is oxidizable by singlet oxygen is discolded. The first step of the method comprises establishing a flow to and from each of a plurality of successive closed zones, each of which zones (a) contains a quantity of a ... | 07/18/1989 |
| 4846945 | Oxidation process Oxidation of alcohols to ketones using bromine suffers from a side reaction of comparable speed in which a bromide substituted product is formed. Additionally, the use of bromine as reagent is relatively unpleasant and it creates a major waste disposal pr... | 07/11/1989 |
| 4839008 | Homogeneous catalytic photochemical functionalization of alkanes by polyoxometalates A method for functionalizing alkanes, which comprises: (a) combining one or a mixture of alkanes with a photochemically active polyoxometalate compound to obtain a reaction medium; (b) allowing said photochemically active polyoxometalate compound to catal... | 06/13/1989 |
| 4812214 | Method of combining siloxy groups with ketene-reactive compounds A method of combining a siloxy group (--SiO--) with a ketene-reactive compound to form a siloxy-containing product comprises: (a) subjecting a silyl diketone to photolysis under conditions effective for generating a siloxy ketene intermediate therefrom, said s... | 03/14/1989 |
| 4725342 | Photochemical dimerization and functionalization of alkanes, ethers, primary alcohols and silanes The space-time yield and/or the selectivity of the photochemical dimerization of alkanes, ethers, primary alcohols and tertiary silanes with Hg and U.V. light is enhanced by refluxing the substrate in the irradiated reaction zone at a temperature at which... | 02/16/1988 |
| 4655891 | Process for the photochemical dehydrogenation of alcohols with semiconductor powder suspensions A process for the photochemical dehydrogenation of alcohols comprises the steps of forming a suspension of semiconductor powder in the alcohol and photochemically activating the suspension in the presence of an oxidant with illumination having an energy a... | 04/07/1987 |
| 4609444 | Photochemical reactions for commercial synthesis Photochemical reactions are conducted using polymer beads arranged as a monolayer, e.g. floating on the surface of a moving body of water. The polymer bead is impregnated with a reactant, floated on the water or otherwise exposed as a monolayer in direct ... | 09/02/1986 |
| 4571290 | Process for the selective oxidation of olefins with photochemical illumination of semiconductor powder suspensions A process for the selective oxidation of olefins comprises the steps of forming a suspension of semiconductor powder in a solvent media, adding an olefin to the solvent media in the presence of an oxidant to form a mixture and, photochemically activating ... | 02/18/1986 |
| 4562004 | 2,3,5,6-Tetrasubstituted p-benzoquinones and their preparation 2,3,5,6-Tetrasubstituted p-benzoquinones of the formula I ##STR1## where R is bromine, C2 -C6 -acylthio or benzoylthio, their preparation and their use for the preparation of 4,8-dihydrobenzo[1,2-c:4,5-c']dithiophene-4,8-dione a... | 12/31/1985 |
| 4545872 | Method for reducing carbon dioxide to provide a product A process and apparatus for reducing carbon dioxide to at least one useful product includes two redox couple electrolyte solutions separated by a first membrane having photosensitizers. The carbon dioxide to be reduced is provided to a second membrane whi... | 10/08/1985 |
| 4525255 | Photochemical reactions for commercial synthesis Photochemical reactions are conducted using floating polymer beads on the surface of a moving body of water. The polymer bead is impregnated with a reactant, floated on the water in direct sunlight so as to expose the reactant to solar radiation, collecte... | 06/25/1985 |
| 4523981 | Means and method for reducing carbon dioxide to provide a product A process for reducing carbon dioxide to at least one useful product includes two redox couple electrolyte solutions separated by a first membrane having photosensitizers. The carbon dioxide to be reduced is separated from one of the redox couple electrol... | 06/18/1985 |
| 4484993 | Process for producing fluorine-containing organic compound A process for producing fluorine-containing organic compounds characterized in that fluorine-containing aliphatic iodides which comprise at least one selected from the group of Rf I, Rf ZnI and Rf SnX2 I (where ... | 11/27/1984 |
| 4478699 | Photosynthetic solar energy collector and process for its use A device for the photosynthetic reduction of carbon dioxide and water by sunlight to formic acid, formaldehyde and methanol in the presence of semiconducting photoactive materials. Using preferred compositions of photoactive materials, selected from oxide... | 10/23/1984 |
| 4469574 | Process and automated device for laser-induced chemistry This invention relates to an automated apparatus for use with electromagnetic radiation, such as a laser beam, to promote chemical reactions. The reaction chamber apparatus comprises a cylinder equipped with a reciprocating piston and with one or more win... | 09/04/1984 |
| 4462880 | Process for augmenting or enhancing the fresh air aroma of consumable materials and clothing and composition useful for same Described is a process for imparting an "air dried cloth" aroma to cloth, synthetic or natural, previously dried using a clothes drier, comprising the step of contacting the cloth prior to drying with an aroma augmenting or enhancing quantity of either (i... | 07/31/1984 |
