| Patents for C01B 13 - Oxygen; Ozone; Oxides or hydroxides in general (14,838) |
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| 08/07/1990 | US4946810 Preparation of ABO3 compounds from mixed metal aromatic coordination complexes |
| 08/01/1990 | EP0379960A2 Method of producing a superconducting Bi-based oxide wire |
| 07/31/1990 | US4944934 High temperature oxygen recovery with reversible chemical reaction |
| 07/26/1990 | DE4000783A1 Corona discharge cell - for ozone generation, having ground quartz dielectric layer |
| 07/25/1990 | EP0379360A2 Method for the preparation of fine particulate metal-containing compound |
| 07/25/1990 | EP0378608A1 Device for producing ozone. |
| 07/18/1990 | CN1008805B High-frequency power source of ozone generator |
| 07/17/1990 | CA1271710A1 Process for producing high concentration oxygen by a pressure-swing-absorption method |
| 07/12/1990 | WO1990007466A1 Ozone generation by corona discharge at elevated pressures |
| 07/11/1990 | EP0377424A2 Process for capturing nitrogen from air using gas separation membranes |
| 07/11/1990 | EP0215899B1 Enhanced pressure swing adsorption processing |
| 07/10/1990 | CA2007360A1 Preparation of a uniform mixed metal oxide |
| 07/04/1990 | EP0376862A2 A superconductive ceramic oxide combination |
| 07/04/1990 | CN2058918U Screen plate type chemical oxygen making device |
| 07/04/1990 | CN2058847U Electronic deodorisation fresh preserving device model 2 |
| 07/04/1990 | CN1043590A Improvement in corona discharge arrangement for removal of harmful substances generated by corona discharge |
| 07/03/1990 | US4939308 Method of forming crystallite-oriented superconducting ceramics by electrodeposition and thin film superconducting ceramic made thereby |
| 06/28/1990 | WO1990007144A1 Titanate bound photosensitizer for producing singlet oxygen |
| 06/28/1990 | WO1990006955A1 Cellulose acetate bound photosensitizer for producing singlet oxygen |
| 06/27/1990 | EP0374631A2 Process for the oxygen concentration in air by means of vacuum-swing-adsorption using mixtures of CA-zeolit A molecular sieves |
| 06/27/1990 | EP0374263A1 Oxide superconductive material and process for its production |
| 06/27/1990 | EP0215016B1 Solid compositions based on superoxides, production thereof and electrochemical applications thereof |
| 06/27/1990 | CN1043292A Oxygen generator |
| 06/27/1990 | CA2004702A1 Superconductive ceramic oxide combination |
| 06/26/1990 | US4937208 Using acid and basic catalyst |
| 06/26/1990 | US4937062 High speed atomizing of metal salt solution into very hot gases in reactor; conversion to oxides |
| 06/26/1990 | US4936961 Generation of hydrogen and oxygen by using water as dielectric between capacitor plates in electrical resonant circuit |
| 06/21/1990 | CA2005988A1 Process for the absorptive oxygen-enrichment of air with mixtures of ca zeolite a molecular sieves by means of vacuum swing absorption |
| 06/20/1990 | EP0373220A1 Superconducting oxide material and method of obtaining it |
| 06/20/1990 | CN2058332U Electronic disinfectant sterilizer |
| 06/19/1990 | US4934148 Dry, high purity nitrogen production process and system |
| 06/14/1990 | WO1990006180A1 An improvement in corona discharge arrangements for the removal of harmful substances generated by the corona discharge |
| 06/13/1990 | CN1042818A Apparatus of ozone supply for receptacles, such as aquaria or the like |
| 06/12/1990 | US4933404 Processes for microemulsion polymerization employing novel microemulsion systems |
| 06/12/1990 | US4933314 Molecular sieving carbon |
| 06/12/1990 | US4933054 Solid electrolyte with coating on one surface of conductive metal, metal oxide or mixture, second surface coated with metal, metal oxide or mixture |
| 06/12/1990 | CA1270208A1 Selective adsorption process |
| 06/08/1990 | CA2004828A1 Corona discharge arrangements for the removal of harmful substances generated by the corona discharge |
| 06/07/1990 | DE3830538A1 Selective fresh air separation |
| 06/06/1990 | EP0371211A2 Process for the production of homogeneous finely divided ceramic powders |
| 06/06/1990 | EP0371152A1 Metal oxide powders, their mixtures, mixed metal oxide powders, their mixtures and use thereof for the catalytic dehydrogenation of hydrocarbons |
| 06/05/1990 | CA1270001A1 Oligomerization of olefins |
| 05/31/1990 | WO1990005699A1 Production of metal oxide powder, and zirconium oxide powder |
| 05/30/1990 | EP0370701A1 Method for making pigment flakes |
| 05/30/1990 | EP0370605A2 Superconductor layer and substrate supporting same |
| 05/29/1990 | US4929597 Barium, yttritium cuprate |
| 05/29/1990 | US4929587 Method for intercalating organic-swelled layered metal chalcogenide with polymer chalcogenide by treatment with polymeric chalcogenide precursor in inert atmosphere |
| 05/29/1990 | US4929436 Process for the manufacture of a powder of mixed metal oxides, and mixed metal oxide powders |
| 05/23/1990 | EP0369979A1 Process for preparing a powder containing at least one metal oxide |
| 05/23/1990 | EP0369713A2 Oxygen-complexing ultrathin films by interfacial polymerization |
| 05/23/1990 | EP0369533A2 Solubilized metal alkoxides in alkoxyalkanol solvent |
| 05/23/1990 | EP0369366A2 Corona discharge ozonator with cooled flow path |
| 05/23/1990 | EP0369117A2 Preparation of metal oxide powders |
| 05/23/1990 | CN1042313A Oxygen enriched air system |
| 05/23/1990 | CN1042312A Integrated pressure swing adsorption / membrane separation |
| 05/23/1990 | CN1042308A Health promoting, refreshing, and fragrant oxygen and its preparation |
| 05/22/1990 | US4927560 Gelation, drying |
| 05/22/1990 | CA1269216A1 Transparent non-vitreous ceramic particulate |
| 05/18/1990 | CA2001848A1 Process for the production of a powder containing at least one metal oxide, and zirconium oxide powder obtained |
| 05/16/1990 | EP0368650A1 Gas resonance device |
| 05/16/1990 | CN2057297U 电子净化器 Electronic purifiers |
| 05/15/1990 | US4925704 Decompositionof metal alkoxide, particle growth in alkaline conditions |
| 05/15/1990 | US4925647 Process for the production of metal oxides or metal mixed oxides |
| 05/15/1990 | US4925460 Adsorption; lithium exchanged |
| 05/14/1990 | CA2002605A1 Solubilized metal alkoxides in alkoxyalkanol solvent |
| 05/10/1990 | DE3837432A1 Chemical composition generating oxygen for respirators |
| 05/10/1990 | CA2002670A1 Gas resonance device |
| 05/09/1990 | EP0366796A1 Activated carbon and process for its production |
| 05/09/1990 | CN2056859U Chemical oxygan generator adjustable continuously |
| 05/09/1990 | CN1041885A Improved membrane separation system and process |
| 05/02/1990 | EP0366313A1 Method of producing mixed metal oxide material, and of producing a body comprising the material |
| 05/02/1990 | EP0366179A1 Process for preparing a precursor of zirconium dioxide |
| 05/01/1990 | US4921531 Process for forming fine ceramic powders |
| 04/26/1990 | DE3835728A1 Process for the production of powders in the particle size range 1-1000 nm and mouldings made therefrom and use thereof |
| 04/25/1990 | EP0364543A1 Viscosity-modifiers for aqueous-based functional products |
| 04/25/1990 | EP0240530B1 Particulate compositions of ferromagnetic metal oxalates in the form of submicronic needle shaped particles, preparation and application thereof |
| 04/24/1990 | US4920083 Novel process for the production of ceramic flakes |
| 04/19/1990 | WO1990003838A1 Ceramic powders |
| 04/18/1990 | EP0363927A2 Process for the preparation of a suspension containing spherical oxide particles |
| 04/18/1990 | EP0363926A2 Particulate polycondensates, process for their preparation and use thereof |
| 04/18/1990 | EP0363913A2 Reusable oxygen inhaler |
| 04/17/1990 | US4918035 Process for the preparation of complex perovskite type compounds |
| 04/17/1990 | US4917710 Process for recovering oxygen enriched gas |
| 04/13/1990 | CA2000514A1 Ceramic powders |
| 04/11/1990 | EP0362962A2 Process for forming metal oxide powders from the metal alkoxide |
| 04/11/1990 | EP0362898A2 Apparatus and method for separating gases |
| 04/11/1990 | EP0362436A1 Improved membrane separation system and process |
| 04/11/1990 | EP0362237A1 Superconducting materials, methods and derivated devices |
| 04/11/1990 | EP0271575B1 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis |
| 04/11/1990 | CN1041114A Method for gas separation using helically wound hollow fibers permeable membrane cartridge |
| 04/11/1990 | CN1041112A Improved pressure swing adsorption process |
| 04/10/1990 | US4916114 Method for producing a layer-like composition of oxide-ceramic superconducting material |
| 04/10/1990 | US4915804 Titanate bound photosensitizer for producing singlet oxygen |
| 04/10/1990 | EP0341266A4 Superconductivity in square-planar compound systems. |
| 04/04/1990 | EP0362164A2 Method and apparatus for treating water using electrolytic ozone |
| 04/04/1990 | EP0361963A2 R-T1-Sr-Ca-Cu-O superconductors and processes for their preparation |
| 04/04/1990 | EP0361541A2 Pressure swing adsorption process |
| 04/04/1990 | EP0361396A1 Process and apparatus for preparing an amorphous powder of a ceramic or metallic material |
| 04/04/1990 | EP0361265A1 Production of thin films of a high temperature superconductor by a plasma-activated PVD process |
| 03/28/1990 | EP0360121A1 Oxygen enriched air system |