| Patents for C01B 13 - Oxygen; Ozone; Oxides or hydroxides in general (14,838) |
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| 03/13/1991 | CN2072968U High efficiency plate-connection-tpye ozone generating room |
| 03/12/1991 | US4999338 Preparation of metal/superconducting oxide composites |
| 03/12/1991 | US4999323 Production of ceramic powders by emulsion precipitation processes and the products thereof |
| 03/10/1991 | CA2024864A1 Preparation of inorganic oxide pigments (ceramics) |
| 03/07/1991 | WO1991002697A1 Method of producing pulverized perovskite compound |
| 03/07/1991 | WO1990015020A3 High-temperature aerosol decomposition process and products produced |
| 03/06/1991 | EP0414819A1 Method of forming crystallite-oriented superconducting ceramics by electrodeposition and thin film superconducting ceramic made thereby. |
| 03/06/1991 | EP0414695A1 Ceramic powder and a process for the preparation thereof. |
| 03/06/1991 | CN2072533U Potsherd multipolar ozone generator |
| 03/05/1991 | US4997810 Vibratory calcination of inorganic oxide superconductor precursor powders |
| 03/05/1991 | US4997809 Critical temperature |
| 03/05/1991 | US4997808 Polyester ionomer or alkylcellulose passivation |
| 03/05/1991 | CA1280999C Process for the production of ozone |
| 02/27/1991 | EP0414432A1 Ozone generator |
| 02/27/1991 | EP0414205A2 Methods of manufacturing thin film superconductors and superconductor devices |
| 02/27/1991 | CN1049485A Process for production of composite of metal oxides, composite powders of metal oxides and ceramic materials |
| 02/26/1991 | US4996189 Oxidastion of metal compounds, heating |
| 02/20/1991 | EP0413564A2 Formation of polymeric metal oxide materials |
| 02/20/1991 | EP0413296A1 Method for thermally spraying of oxide-ceramic superconductive materials |
| 02/20/1991 | CN2071641U Sterilization deodoriser |
| 02/19/1991 | US4994625 Production of hydrogen peroxide |
| 02/19/1991 | US4994437 Method of manufacturing oxide superconducting films by peritectic reaction |
| 02/19/1991 | US4994218 Acidification of metal alkoxide solution, then adding base, controlling ph; drying, molding; |
| 02/16/1991 | CA2023083A1 Ozone generator |
| 02/13/1991 | EP0412663A2 Gas separation apparatus with multiple head pumping |
| 02/13/1991 | CN2071180U High efficient, high purity ozone lamp |
| 02/13/1991 | CN1049137A Oxygen generator |
| 02/12/1991 | US4992407 Catalyst consisting of a metal layer system for the removal of hydrogen from a gas mixture |
| 02/12/1991 | US4992246 Ozonizer |
| 02/12/1991 | US4992169 Ozone generating means and water quality improving apparatus using the same |
| 02/06/1991 | EP0412007A2 Process for preparing superconducting thin films |
| 02/06/1991 | EP0412000A1 Process for preparing superconducting thin films |
| 02/06/1991 | EP0411053A1 Method for intercalating organic-swelled layered metal chalcogenide with polymer chalcogenide |
| 02/06/1991 | EP0411047A1 Superconducting ceramics by electrodeposition |
| 02/05/1991 | US4990268 Enhanced oil recovery |
| 01/30/1991 | EP0410401A1 Method for coating a surface of a substrate |
| 01/30/1991 | CN2070184U Chemical oxygen self saving device without starter |
| 01/29/1991 | US4988672 Method of forming oxide superconducting layers by solid state diffusion |
| 01/29/1991 | US4988488 Absorption of oxygen on alkali metal nitrates and nitrites to leave nitrogen enriched gas, releasing oxygen to regenerate al loy |
| 01/29/1991 | US4988484 High efficiency ozone generator for sterilizing, bleaching and the like |
| 01/24/1991 | WO1991000934A1 Process for producing oxide ceramic moulded bodies by thermal spraying |
| 01/24/1991 | DE4023001A1 Ceramic-ceramic or ceramic-metal composite powders having uniform 2nd - obtd. by cation-exchanging metal from soln. onto ceramic powder then converting metal to cpd. |
| 01/23/1991 | EP0409319A1 Process for the preparation of a metal oxide composite, composite metal oxide powders and ceramic materials |
| 01/23/1991 | EP0409135A1 Improved chabazite for gas separation |
| 01/23/1991 | CN1048683A Dry, high purity nitrogen production process and system |
| 01/22/1991 | US4987012 Maintaining constant ph during alkaline hydrolysis of metal alkoxide in seeded dispersion |
| 01/22/1991 | US4986968 Ozone generator |
| 01/21/1991 | CA2021549A1 Process for making a metallic oxide composite, metallic oxide composite powders and ceramic materials thereof |
| 01/17/1991 | DE3923008A1 Verfahren zur herstellung oxidkeramischer formkoerper durch thermisches spritzen Process for the preparation of oxide ceramic splash formkoerper by thermal |
| 01/16/1991 | EP0408326A1 Method for manufacturing a composite oxide thin film |
| 01/16/1991 | EP0408240A2 Flash evaporation method for producing superconductor powder |
| 01/16/1991 | CN2069410U Cylindrical silent discharge tube for ozonator |
| 01/16/1991 | CN2069280U Full-automatic ozone generator for refvigerator |
| 01/15/1991 | US4985401 Electric discharge explosion flame spraying |
| 01/15/1991 | US4985380 Method of making thin refractory flakes |
| 01/15/1991 | US4985053 Gas separation membrane |
| 01/15/1991 | US4985052 Pressure Swing Adsorption |
| 01/12/1991 | CA2020319A1 Flash evaporation method for producing superconducting powder |
| 01/10/1991 | WO1991000680A1 Methods for generating plasma and producing ozone |
| 01/09/1991 | EP0395714A4 Processes for microemulsion polymerization employing novel microemulsion systems |
| 01/08/1991 | US4983670 Cellulose acetate bound photosensitizer for producing singlet oxygen |
| 01/02/1991 | EP0406218A1 Process for preparing ozone |
| 01/02/1991 | EP0405288A1 Process and device for obtaining pure oxygen |
| 01/02/1991 | CN1048169A Novel solid multi-component membranes, electrochemical reactor and use of membranes and reactor for oxidation reactions |
| 01/02/1991 | CA1278578C Organic solvent soluble polyvalent metal alkoxy alkoxides |
| 01/02/1991 | CA1278417C Process for manufacture of metal oxide |
| 01/01/1991 | US4981839 Method of forming superconducting oxide films using zone annealing |
| 01/01/1991 | US4981819 Phase transfer catalyst |
| 01/01/1991 | US4981656 Device for the production of ozone |
| 01/01/1991 | US4981655 Chemical oxygen generator |
| 01/01/1991 | US4981499 Process and plant for separating a gaseous mixture by adsorption |
| 12/30/1990 | WO1991000242A1 Ozone generator |
| 12/30/1990 | CA2062772A1 Ozone generator |
| 12/27/1990 | CA1278169C Process for the production of titanium dioxide pigments |
| 12/25/1990 | US4980333 Perovskite-related layered oxides containing interspathic polymeric oxide |
| 12/19/1990 | CN2067572U Automatic sterilization, deodorisation and freshness-keeping device for refrigerator |
| 12/19/1990 | CN1010830B Process for separating gaseous mixture by adsorption |
| 12/14/1990 | WO1990015775A1 Method of hydrolyzing metal halides |
| 12/14/1990 | CA2034004A1 Method of hydrolyzing metal halides |
| 12/13/1990 | WO1990015020A2 High-temperature aerosol decomposition process and products produced |
| 12/13/1990 | WO1990015018A1 Coated dielectric material for an ozone generator |
| 12/12/1990 | EP0381722A4 Process and apparatus for the production of fuel gas and the enhanced release of thermal energy from such gas |
| 12/12/1990 | CN2067276U Ozone generator by electrolytic process |
| 12/12/1990 | CN1010751B Semi-permeable membranes comprising predominantly polycarbonates derived from tetrahalobisphenols |
| 12/04/1990 | US4975417 Electrophoretically depositing ground ceramic material on electrode substrate |
| 12/04/1990 | US4975415 Dissolving water soluble salts of akaline earth metals, transition metals, or rare earth metals; atomizing in liquids nitrogen, calcining and annealing to form ceramics |
| 12/04/1990 | US4975413 Adhensive layer has high strength, high modulus, graphitic, pitch-based; flexibility |
| 12/04/1990 | US4975265 Minimal deactivation |
| 11/29/1990 | WO1990014307A1 Process for manufacturing powdered ceramic oxides |
| 11/28/1990 | EP0399833A1 Novel solid multi-component membranes, electrochemical reactor and use of membranes and reactor for oxidation reactions |
| 11/28/1990 | EP0399148A2 Process for producing metal oxide-based polycondensation powders |
| 11/28/1990 | EP0105339B1 System of ionized oxygen allotrope gas water purification and method and apparatus therefor |
| 11/28/1990 | CN2066439U High efficient ozone generator |
| 11/27/1990 | US4973606 Membranes of organic polymers which contain crystalline carrier compounds, and their preparation |
| 11/22/1990 | EP0398503A2 Rare-earth barium copper oxide superconducting materials |
| 11/22/1990 | EP0398374A2 Method of and apparatus for fabricating oxide superconducting wire |
| 11/22/1990 | EP0398339A2 Adsorptive process for producing two gas streams from a gas mixture |
| 11/22/1990 | EP0398164A2 Method of fabricating oxide superconducting film |
| 11/22/1990 | EP0397684A1 Process for forming fine ceramic powders and products thereof |
| 11/21/1990 | CN2065920U I type electronic deodorization fresh-keeping unit |