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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7871501 | Laser-based method for removal of sulfur (DMDBT) in hydrocarbon fuels The laser-based method for removal of sulfur (DMDBT) in hydrocarbon fuels provides for deep desulfurization of hydrogen fuels through the elimination of dimethyldibenzothiophene (DMDBT) from hydrocarbon fuels. The method involves photoexciting atomic or molecular ox... | 01/18/2011 |
| 7393437 | Photochemically crosslinked collagen scaffolds and methods for their preparation A method for producing collagen-based scaffolds with improved characteristics, which broadens the usage of collagen in tissue engineering and the products so produced are described. The method comprises reconstitution of three-dimensional collagen matrices from coll... | 07/01/2008 |
| 7373254 | Disinfestation of medical implants with radiation The present invention relates to the process of selectively exposing matter to a specific wavelength of electromagnetic energy in sufficient flux density per wavelength to cause or promote a desired effect. The process includes, but is not limited to, destroying, di... | 05/13/2008 |
| 7361696 | 1,4-disubstituted diacetyline polymer and process for producing the same A 1,4-di-substituted diacetylene polymer that is soluble in organic solvent, is composed of a repeating unit represented by the general formula ═CR—C≡C—CR′═ (wherein, R and R′ represent identical or different monovalent organic substituents), and has a... | 04/22/2008 |
| 7288287 | Circuit formation part and manufacturing method for this circuit formation part The insulating layer formation step of forming an insulating layer 24-1 on a base for resin application 20 by applying polymeric material, which has been diluted with a solvent, filled with inorganic filler to the base for resin application and ... | 10/30/2007 |
| 7252806 | Flue gas conversion apparatus and method An apparatus and method of converting flue gases produced by a fossil fuel burning furnace boiler is disclosed. The flue gas is separated into its constituent parts by cooling and filtering. Carbon dioxide, the main constituent, is then converted to carbon monoxide ... | 08/07/2007 |
| 7183336 | Irradiated absorbent materials Polymer particles are irradiated with radiation from a high energy source to increase the water or other fluid absorbency of the particles. Products manufactured using the activated particles include protective undergarments, bandages, kitty litter, and spill clean ... | 02/27/2007 |
| 7168266 | Process for making crystalline structures having interconnected pores and high refractive index contrasts Techniques for producing a glass structure having interconnected macroscopic pores, employing steps of filling polymerizable glass precursors into pores in a polymeric structure having interconnected macroscopic pores; polymerizing the precursors; and decomposing th... | 01/30/2007 |
| 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 |
| 6994774 | High frequency energy application to petroleum feed processing The present invention provides a method and apparatus for maintaining the active life of a catalyst in organic feed processing by applying a series of electromagnetic radiation pulses to the catalyst in a reactor. The pulsing of the catalyst selectively heats and co... | 02/07/2006 |
| 6858114 | Laser hydrolysis of polypeptides The present invention relates to methods of hydrolyzing a protein (or peptide) by treating a protein (or peptide)-containing sample with a laser and associated apparatus for effectuating the hydrolysis. ... | 02/22/2005 |
| 6780497 | Surface modified expanded polytetrafluoroethylene devices and methods of producing the same Improved processes for surface treating expanded polytetrafluoroethylene (PTFE) is disclosed and improved surface-treated devices made from the processes. The processes employ a laser to surface-modify an expanded PTFE structure to create a macro-roughened surface t... | 08/24/2004 |
| 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 |
| 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 |
| 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 |
| 6402898 | Coherently controlled laser distillation of chiral enantiomers A laser-based method of enhancing the enantiomeric excess of one chiral enantiomer in a mixture of chiral enantiomers, denoted L and D (and related to one another by the inversion operation I), is described. The molecule L and D is chosen so that electron... | 06/11/2002 |
| 6329553 | Selective thermal and photooxidation of hydrocarbons in zeolites by oxygen A process for a combined selective thermal oxidation and photooxidation of hydrocarbons adsorbed onto zeolite matrices. A highly combined selective thermal oxidation and photooxidation of unsubstituted or alkyl substituted alkanes, alkenes, aromatics and ... | 12/11/2001 |
| 6281315 | Solid polymeric matrices containing rhodamines and their use in lasers The present patent of invention describes the obtention of lasers in solid condition of dyes of the family of Rhodamines. More particularly, it describes lasers in which said dye or chromophore is to be found covalently anchored to a solid matrix, consist... | 08/28/2001 |
| 6043294 | Method of and apparatus for optically enhancing chemical reactions Chemical reaction is effected utilizing light of an appropriate frequency supplied preferably via optical fibers to one or more light extractors having light-emissive surfaces in contact with reactants. The light can be concentrated before being delivered... | 03/28/2000 |
| 6022455 | Light irradiation method and its apparatus A light irradiation method and apparatus which emits light to avoid a photochemical reaction which returns an intermediate product to a pigment, in which a photochemical reaction or a thermochemical reaction transforms the pigment into the intermediate pr... | 02/08/2000 |
| 5914013 | Selective thermal and photooxidation of hydrocarbons in zeolites by oxygen A process for selective thermal oxidation or photooxidation of hydrocarbons adsorbed onto zeolite matrices. A highly selective thermal oxidation and photooxidation of unsubstituted or alkyl substituted alkanes, alkenes, aromatics and cycloalkyls in solven... | 06/22/1999 |
| 5882487 | Removing contamination A method of removing from the surface of an object a contaminating substance buried in an organic substance on the surface of the object, the method including directing a laser beam at the organic substance to cause chemical change of the organic material... | 03/16/1999 |
| 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 |
| 5808256 | Method of controlling a photoreaction with a laser beam A target is irradiated with a laser beam having an energy of h.nu./n, where n is an integer, instead of the photon energy h.nu. required for a reaction to proceed using a conventional single-photon excitation method. A desired reaction is selectively indu... | 09/15/1998 |
| 5650549 | Method and apparatus for photothermal destruction of toxic organic compounds contained in a gas stream A method and apparatus for photothermal detoxification of toxic organic compounds are provided. The apparatus comprises a means for maintaining the gas stream from the targeted source at a temperature of greater than 200° C., an optional air pollution co... | 07/22/1997 |
| 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 |
| 5619023 | Process for the preparation of alkyl halodifluoroacetates For the preparation of alkyl halodifluoroacetates, a 1,1-difluorotetrahaloethane is reacted with an alcohol in the presence of air and/or oxygen and a free-radical initiator, such as for example an azo compound, e.g., azobis(isobutyronitrile).... | 04/08/1997 |
| 5571852 | Fluorinated carbon polymer composites Disclosed are structures comprising a composite of fluorinated particulate carbon dispersed in a polymer, the fluorinated carbon being present in an amount sufficient to reduce the dielectric constant of the composition, the structure also including elect... | 11/05/1996 |
| 5500459 | Heat-sealing of semicrystalline polymers with metals Semicrystalline polymers are heat-sealed with metals under pressure and at a temperature between the glass transition temperature and the softening temperature of the polymer by prior exposure of the polymer surface to UV radiation produced by the decompo... | 03/19/1996 |
| 5486275 | Nitrogen-containing perfluoroalkyl bromide and method for production thereof A nitrogen-containing perfluoroalkyl bromide, a novel compound to the art, is represented by the formula, ##STR1## wherein Rf1 and Rf2 independently stand for a perfluoroalkyl group of one to five carbon atoms, provided that Rf | 01/23/1996 |
| 5462781 | Surface modified porous expanded polytetrafluoroethylene and process for making An implantable porous expanded polytetrafluoroethylene material having a microstructure of nodes interconnected by fibrils wherein a surface of the material has been modified by the removal of fibrils from the surface so that under magnification the surfa... | 10/31/1995 |
| 5437900 | Surface modified porous expanded polytetrafluoroethylene and process for making Porous expanded polytetrafluoroethylene material having a microstructure of nodes interconnected by fibrils wherein a surface of the material has been modified to have increased hydrophobicity as indicated by having a water droplet roll-off angle of less ... | 08/01/1995 |
| 5417825 | Method for photothermal destruction of toxic organic compounds A method and apparatus for photothermal detoxification of toxic organic compound is provided. The apparatus includes a thermally insulated reaction vessel maintained at a temperature greater than 200° C., and a radiation source such as arc emission or a ... | 05/23/1995 |
| 5328575 | Photochemical process and sytem for performing a photochemical process An apparatus and method photochemically converts a first hydrocarbon into at least one other hydrocarbon, such as the conversion of methane to ethane and other higher hydrocarbons. The first hydrocarbon is injected through a high-temperature nozzle into a... | 07/12/1994 |
| 5318679 | Synthesis of chain chemical compounds The present invention is an improved method of making sequenced chemical chain compounds through the application of laser copy technology to UV light directed spatially addressed parallel chemical synthesis and is particularly useful in the production of ... | 06/07/1994 |
| 5302259 | Method and apparatus for altering the properties in light absorbing material A method and apparatus are disclosed for altering the properties of light sensitive material, for example, biological material, which has a plurality of randomly spaced light absorbing structures thereon. A beam of light, for example, from a laser, is dir... | 04/12/1994 |
| 5240574 | Process for the photochemical production of halogen compounds The present invention provides a process for the photochemical production of compounds of the general formula: R--(C2 R4 ')n --X by telomerisation of an alkyl halide R--X as telogen and of an olefin C2 R4 ... | 08/31/1993 |
| 5171741 | Bacteriochlorophyll-a derivatives useful in photodynamic therapy Compounds of fomula (1) or formula (2): ##STR1## wherein M is a non-paramagnetic metal selected from Mg+2, and Zn+2, or represents 2 H+ each H+ bonded to one of the N atoms connected by the solid lines; R | 12/15/1992 |
| 5126020 | Detoxification apparatus and method for toxic waste using an energy beam and electrolysis Detoxification apparatus for disposing of toxic waste material by incineration includes a closed reactive vessel (3) having an inlet (5) and an outlet (7). Waste material is introduced into the vessel in a fluid state and a laser (19) or other energy beam... | 06/30/1992 |
| 5120411 | Photodynamic activity of sapphyrins The present invention includes a method to produce singlet oxygen from molecular oxygen generated by reaction with a sapphyrin compound excited at an absorbing wavelength to form a triplet species. Specifically, the sapphyrin compound is an alkylated sapp... | 06/09/1992 |
