Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7655115 | Long-lived photo-protonated carbocation for photochromic, photoconductive liquids An apparatus and method provide a solute-solvent solution that allows the solute to become photo-protonated by the solvent on absorption of ultraviolet light. The solute is 1,2,3,4,5,6,7,8-octamethylanthracene (OMA). The solvent is 1,1,1,3,3,3-hexafluoro-2-propanol ... | 02/02/2010 |
| 7294404 | Graded photocatalytic coatings The invention provides graded photocatalytic coatings. In one aspect, the invention provides a substrate carrying a photocatalytic coating that includes a first graded film region and a second graded film region. The first graded film region has a substantially cont... | 11/13/2007 |
| 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 |
| 6955791 | Environmental air sterilization system The present invention is a high volume, wall-mountable air sanitation apparatus for disinfecting and removing VOCs from air with high energy UV light and ozone. The apparatus has a powerful fan and an elongated UV light source and target for use with the movement of... | 10/18/2005 |
| 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 |
| 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 |
| 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 |
| 5035784 | Degradation of organic chemicals with titanium ceramic membranes Complex organic molecules, such as polychlorinated biphenyls can be degraded on porous titanium ceramic membranes by photocatalysis under ultraviolet light.... | 07/30/1991 |
| 4992614 | Reactivation of partially deactivated catalyst employing ultrasonic energy A solid catalyst composition which has undergone a partial loss of catalytic activity due to the accumulation of reaction product residue is treated in a chemical conversion process reaction zone in the presence of feedstock(s) with ultrasonic energy of a... | 02/12/1991 |
| 4914256 | Reactivation of partially deactivated catalyst employing ultrasonic energy A solid catalyst composition which has undergone a partial loss of catalytic activity due to the accumulation of reaction product residue is treated in a chemical conversion process reaction zone in the presence of feedstock(s) with ultrasonic energy of a... | 04/03/1990 |
| 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 |
| 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 |
| 4749470 | Residuum fluid catalytic cracking process and apparatus using microwave energy A fluid catalytic cracking (FCC) process and apparatus which exposes a residuum to microwave energy to activate the residuum prior to feeding to a fluid catalytic cracking riser. The process and apparatus also cracks a portion of a light hydrocarbon strea... | 06/07/1988 |
| 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 |
| 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 |
| 4582578 | Method for the electrochemical conversion of a quadricyclane to a norbornadiene A method based on a cyclic single electron transfer mechanism has been developed for the electrochemical initiation and interruption of the exothermic quadricyclane to norbornadiene conversion.... | 04/15/1986 |
| 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 |
| 4517063 | Photochemical reactor and method for carrying out photochemical reactions therein An apparatus for carrying out a photochemical reaction incorporates a housing (11) and a lid (15), removably affixed thereto, which together define a reaction chamber (20). The lid has an axial opening (26) therein for the passage of a light beam therethr... | 05/14/1985 |
| 4495041 | Photochemical process using shape-selective photoassisted heterogenous catalyst compositions Highly specific catalyst compositions are provided, comprising zeolites containing a photoassisting material, which is capable of catalyzing photoassisted heterogenous catalytic reactions within the zeolite structure. The photoassisting material can be so... | 01/22/1985 |
| 4479859 | Laser photochemical synthesis of benzene and its derivatives A cw CO2 tunable laser is employed to irradiate an allyl halide selected from allyl chloride, allyl bromide, allyl fluoride, 2-methyl-3-chloropropene, and 2,3-dichloropropene and contained in one or more reaction cells at a predetermined pressu... | 10/30/1984 |
| 4466870 | Organic sonochemistry process The method of causing or promoting chemical changes involving the step of subjecting reactants to ultrasonic energy as a key treatment step, including methods of: (1) reducing aryl halides by treating a mixture of aryl halide and lithium aluminum hydride ... | 08/21/1984 |
| 4456512 | Photochemical reactor and method Photochemical reactions are carried out by passing the fluid to be irradiated through a plurality of capillaries, each of which is surrounded by an actinic-radiation emitting plasma; the capillaries being transparent to the radiation. By banding the capil... | 06/26/1984 |
| 4452678 | Process and apparatus for the photochemical production of halogeno-alkanes and cycloalkanes Halogenation of alkanes and of cycloalkanes by the action of ultraviolet upon a solution of the halogen in the alkane; the solution is prepared in advance and passes into the irradiated zone, after having been put into contact with a halogenation inhibito... | 06/05/1984 |
| 4446041 | Solar energy system This invention relates to a solar energy system wherein chemical A is converted into chemical B in the presence of a photo-sensitizer with the absorption of considerable heat, which heat can be redelivered at will by placing chemical B in contact with a c... | 05/01/1984 |
| 4424805 | Solar energy system and method of use This invention relates to a solar energy system wherein chemical A is converted into chemical B in the presence of a photo-sensitizer with the absorption of considerable heat, which heat can be redelivered at will by placing chemical B in contact with a c... | 01/10/1984 |
| 4394858 | Photochemical conversion and storage of light energy by endoergic isomerizations A process is provided for the capture and storage of radiant energy in highly strained carbon containing ring structures of isomerizable compounds. The process includes exposing a photocatalyst containing a compound of a metal selected from Re, Ir, Rh, Ru... | 07/26/1983 |
| 4338173 | Catalytic isomerization process using photo-induced deligandation A process is provided for inducing a catalytic isomerization reaction. The process involves exposing to optical radiation a gaseous mixture including a reactant unsaturated hydrocarbon and a compound of a transition metal and a ligand. The gaseous transit... | 07/06/1982 |
| 4152230 | Photooxidation process A photochemically initiated oxidation process for organic materials using only catalytic quantities of the photochemical agent by conducting the reaction in the presence of a compound of a variable valency metal (especially copper) in order to trap the ph... | 05/01/1979 |
| 4089764 | Process for preparation of ଲ-bourbonene A process for preparing ଲ-bourbonene which comprises irradiating internally or externally an essential oil containing germacrene D, such as ylang-ylang oil, cananga oil, the essential oil of Solidago altissima L., the essential oil of Solidago gigan... | 05/16/1978 |
| 4012305 | Production of 1-methyl-3-phenylindans A process for the production of 1-methyl-3-phenylindans by dimerization of styrenes in the presence of catalysts and of organic compounds which absorb light of from 2000 to 8000 A and which are irradiated with such light. The compounds which can be prepar... | 03/15/1977 |
