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 |
| 7270932 | Imaging composition and method Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be used in me... | 09/18/2007 |
| 7223519 | Imaging compositions and methods Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to... | 05/29/2007 |
| 7220391 | UV photochemical option for closed cycle decomposition of hydrogen sulfide Methods and systems for separating hydrogen and sulfur from hydrogen sulfide(H2S) gas. Hydrogen sulfide(H2S) gas is passed into a scrubber and filtration unit with polysulfide solution. Interaction frees elemental sulfur which is filtered, exce... | 05/22/2007 |
| 7144676 | Imaging compositions and methods Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to... | 12/05/2006 |
| 7122642 | Method for producing crystal polymorphs and crystal polymorphs produced thereby A method to prepare new or unexpected polymorphs of materials which have not been observed, or to obtain a known polymorph under different conditions than those in which it is usually made, by using a laser to cause nucleation and crystal growth to occur in a supers... | 10/17/2006 |
| 7098360 | Processes employing multiple successive chemical reaction process steps and apparatus therefore The invention provides processes and apparatus for the production of materials requiring a plurality of chemical reaction steps. In the prior art the number of reaction vessels is minimized by performing two or more reactions together in the same vessel. Instead eac... | 08/29/2006 |
| 6989467 | Microwave induced process for the preparation of substituted 4-vinylphenols The present invention relates to “a microwave induced process for the preparation of 4-vinylphenols or its derivatives” in which commercially important FEMA GRAS approved perfumery and flavouring vinylphenols (i.e. hydroxystyrenes) namely 4-vinylguaiacol (FEMA G... | 01/24/2006 |
| 6946061 | Regeneration of a working solution in a hydrogen peroxide production process The invention relates to a method of regenerating hydrogenated and/or oxygenated alkyl anthraquinones and/or alkyl anthrahydroquinones to alkyl anthraquinones and/or alkyl anthrahydroquinones, wherein the reaction is carried out in the presence of a catalyst under e... | 09/20/2005 |
| 6759521 | Polarization switching to control crystal form A method to select and prepare polymorphs of materials by switching the polarization state of light employing non-photochemical laser-induced nucleation. ... | 07/06/2004 |
| 6749727 | Hydrogenation of a working solution in a hydrogen peroxide production process A method of hydrogenating alkyl anthraquinones and/or alkyl hydroanthraquinones to alkyl anthrahydroquinones and/or alkyl hydroanthrahydroquinones is disclosed. The reaction is carried out in the presence of a catalyst under electromagnetic irradiation, such as micr... | 06/15/2004 |
| 6733586 | High throughput non-photochemical laser induced nucleation A method for the high-throughput non-photochemical laser induced nucleation of crystals from aged supersaturated solutions in which short high-intensity laser pulses are used to induce nucleation in an array or sequence aged supersaturated solutions. The laser reduc... | 05/11/2004 |
| 6656328 | Process for preparation of polyhydric alcohols A process for preparing a polyhydric alcohol according to the invention comprises subjecting a polyhydric alcohol compound having protected hydroxy group(s) to microwave irradiation in the presence of basic compound(s) or acid(s) having an acid dissociati... | 12/02/2003 |
| 6426406 | Method for using laser light to control crystal form A method to prepare new or unexpected polymorphs of materials which have not been observed, or to obtain a known polymorph under different conditions than those in which it is usually made, by using a laser to cause nucleation and crystal growth to occur ... | 07/30/2002 |
| 6328854 | Method of and apparatus for manufacturing methanol A porous tube is positioned coaxially around and in axial alignment with a tubular lamp forming an annulus therebetween. Methane is directed through the porous tube and forms submicron size bubbles in a liquid flowing through the annulus. Energy from the ... | 12/11/2001 |
| 6267849 | Method for the photocatalytic conversion of gas hydrates A method for converting methane hydrates to methanol, as well as hydrogen, through exposure to light. The process includes conversion of methane hydrates by light where a radical initiator has been added, and may be modified to include the conversion of m... | 07/31/2001 |
| 6214176 | Method of and apparatus for manufacturing methanol In a method of and apparatus for manufacturing methanol and higher alcohols from natural gas a catalytic area is formed on the exterior of a gas permeable partition. Natural gas is maintained on the interior of the gas permeable partition at predetermined... | 04/10/2001 |
| 6156211 | Enhanced photocatalytic conversion of methane to methanol using a porous semiconductor membrane A method and apparatus for the conversion of methane in solution or gas provides photochemical conversion in a unique two-phase or three-phase boundary system formed in each pore of a semiconductor membrane in a photocatalytic reactor. In a three-phase sy... | 12/05/2000 |
| 6129818 | Method of and apparatus for manufacturing methanol In a method of and apparatus for manufacturing methanol from methane a catalytic area is formed on the exterior of a hollow sintered stainless steel tube. Methane is maintained within the sintered stainless steel tube at predetermined pressure, and water ... | 10/10/2000 |
| 6113747 | Method of and apparatus for manufacturing methanol In a method of and apparatus for manufacturing methanol from methane a catalytic area is formed on the exterior of a hollow sintered stainless steel tube. Methane is maintained within the sintered stainless steel tube at predetermined pressure, and water ... | 09/05/2000 |
| 5954925 | Method and apparatus for manufacturing methanol In a method of and apparatus for manufacturing methanol from methane, a catalytic area is formed on the exterior of a hollow sintered stainless steel tube. Methane is maintained within the sintered stainless steel tube at predetermined pressure, and water... | 09/21/1999 |
| 5770785 | Apparatus and method for removing carbon dioxide contained in exhaust gas A hydrogen source and carbon dioxide are activated by irradiating a high energy beam onto the hydrogen source formed of hydrogen gas and/or a gaseous hydrogen compound, and onto exhaust gas containing carbon dioxide. The carbon dioxide contained in the ex... | 06/23/1998 |
| 5720858 | Method for the photocatalytic conversion of methane A method for converting methane to methanol is provided comprising subjecting the methane to visible light in the presence of a catalyst and an electron transfer agent. Another embodiment of the invention provides for a method for reacting methane and wat... | 02/24/1998 |
| 5620569 | Process for the photooxidation of terpene olefins In the photooxidation of terpene olefins, fewer by-products and higher conversion rates are obtained if a very high irradiation intensity is chosen.... | 04/15/1997 |
| 5482599 | Photochemical method for converting carbon dioxide gas to organic substances Fine particles of ZnO are subjected to heat treatment at 400° C. for four hours under vacuum to activate the surfaces thereof, the activated ZnO particles are brought into contact with saturated water vapor, and then subjected to irradiation by visible l... | 01/09/1996 |
| 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 |
| 5436401 | 22-oxacholecalciferol derivative and process for preparing the same A 22-oxacholecalciferol derivative represented by formula (I): ##STR1## wherein R1 represents a hydrogen atom or a hydroxyl group; and R2 and R3, which may be the same or different, each represent a lower alkyl group ... | 07/25/1995 |
| 5356936 | Process for producing hydrophilic polymer membranes Hydrophilicity of hydrophilic polymers, in the form of heat-crosslinked cings on porous membranes, is increased by exposure to an oxygen plasma, preferably for about 60 seconds. The plasma is generated at an oxygen gas pressure of about 1.5 Torrs in a ch... | 10/18/1994 |
| 5345003 | Method for preparing 2,3-dichloro-1-propanol and 3-chloro-1-propanol A method for preparing 2,3-dichloro-1-propanol and 3-chloro-1-propanol is here disclosed which comprises the step of reacting 1,2-dichloroethane with methanol by the irradiation of light in the presence of at least one compound selected from the group con... | 09/06/1994 |
| 5326440 | Photooxidation of hydrocarbons Photooxidation of cyclohexene or tetralin is effected preferably in the presence of a photosensitizer such as an aliphatic ketone by light of wave length of about 2000 Å-7000 Å to form hydroperoxide, alcohol, and ketone products in good photoconversion ... | 07/05/1994 |
| 5304291 | Method of preparing 9beta, 10alpha-5,7-diene steroids The invention relates to a method of preparing a 9beta,10alpha-5,7-diene steroid by irradiating the corresponding 9alpha,10beta-5,7-diene steroid with filtered ultraviolet light from an indium lamp.... | 04/19/1994 |
| 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 |
| 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 |
| 5104504 | Method for the preparation of an alcohol from hydrocarbon A efficient photochemical method for the preparation of an alcohol compound, e.g., benzyl alcohol, from a non-olefin hydrocarbon compound, e.g., benzene, was proposed in which a mixture of the non-olefin hydrocarbon compound as the starting material and a... | 04/14/1992 |
| 5077440 | Process for the preparation of 3-phenoxybenzylalcohol In a process for the preparation of 3-phenoxybenzylalcohol, 3-phenoxytoluene is reacted with dibromodimethylhydantoin in a non-polar solvent, followed by hydrolysis of the products of the first reaction step. The process provides highly pure 3-phenoxybenz... | 12/31/1991 |
| 5053561 | Method of isolating trans-1,1,4,4-tetraalkyl-2-butene-1,4-diols A method of isolating trans-1,1,4,4-tetraalkyl-2-butene-1,4-diols of formula I ##STR1## in which R1, R2, R3 and R4 are the same or different and denote C1 - to C5 -alkyl, from mixtures... | 10/01/1991 |
| 5024742 | Method of crosslinking amino acid containing polymers using photoactivatable chemical crosslinkers A method for molecularly crosslinking amino acid containing polymers by photoactivating chemical crosslinkers which have been combined with the polymers. Collagen crosslinked by this method can be used as a bioadhesive for sutureless closures of the skin ... | 06/18/1991 |
| 4997988 | Oxa-organic sulfur compounds, their preparation and use Oxa-organic sulfur compounds, methods of preparing such compounds and methods of using the compounds as polymer chain length terminating agents are provided. The compounds are prepared by reacting allyl alcohol in the presence of a basic catalyst with a c... | 03/05/1991 |
| 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 |
| 4900407 | Method for deoxygenation of alcohols In a method for deoxygenating the secondary and/or tertiary OH group(s) in an alcohol having such OH group(s), a characteristic feature thereof is that the alcohol having the OH group(s) is first converted into a substituted or unsubstituted benzoate deri... | 02/13/1990 |
| 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 |
