| Patents for C01G 37 - Compounds of chromium (1,613) |
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| 01/13/1982 | EP0043646A1 Separation of chromium from scrap |
| 10/20/1981 | US4296076 Desulfurization, roasting |
| 09/29/1981 | CA1109641A1 Processing of chromium ore |
| 09/22/1981 | US4291000 Process for the production of chromium trioxide |
| 09/16/1981 | EP0035751A1 Chromium oxide for the refractory industry |
| 09/01/1981 | CA1107937A1 Double chromate, process for its preparation, and use of said chromate as activating matter in electrochemical cells |
| 08/26/1981 | EP0034236A1 Separation of chromium from scrap |
| 08/25/1981 | US4285912 Recovery of bismuth from chloride process solutions |
| 06/23/1981 | CA1103593A1 Method and apparatus for removing gases from particles |
| 06/23/1981 | CA1103426A1 Zinc chromium chromate pigment |
| 06/03/1981 | EP0029687A1 Process for stabilizing ferromagnetic chromium dioxide |
| 05/26/1981 | US4269705 Method for removing chromium ions from aqueous solutions of organic acids |
| 05/19/1981 | US4268486 Reacting with a hydrazine compound and separating trivalent chromium compounds |
| 05/06/1981 | EP0027868A1 Process for the oxidative disintegration of ores containing chromium |
| 04/29/1981 | EP0027640A1 Process for producing ferromagnetic chromium dioxide, and its use in producing magnetic recording carriers |
| 04/07/1981 | US4260872 (doped)lanthanum chromite |
| 03/31/1981 | US4259297 Chromate removal from concentrated chlorate solution by chemical precipitation |
| 03/31/1981 | US4259296 Recovery of chromium from scrap |
| 03/18/1981 | EP0025334A1 Chromate removal from concentrated chlorate solution by chemical precipitation |
| 03/17/1981 | US4256722 Process for producing porous spinel materials |
| 02/04/1981 | EP0023464A1 Process for the stabilisation of solutions of hexavalent organic chromium derivatives in hydrocarbon solvents, by phosphoric esters |
| 02/03/1981 | CA1094813A1 Recovery of chromium values |
| 02/03/1981 | CA1094779A1 Process for treating chromium dioxide |
| 01/27/1981 | US4247338 Metal chromate pigment compositions |
| 01/13/1981 | US4244932 Stabilized ferromagnetic chromium dioxide and process for obtaining same |
| 01/13/1981 | US4244925 By reaction with alkali metal salt |
| 12/23/1980 | CA1092084A1 Method and a reagent mixture for removing metal ions from an aqueous solution by means of liquid-liquid extraction |
| 12/23/1980 | CA1091919A1 Process for the preparation of ferromagnetic chromium dioxide |
| 12/02/1980 | CA1090555A1 Process for preparing ferromagnetic chromium dioxide |
| 11/25/1980 | US4235862 Production of low sulphur chromium (III) oxide |
| 11/11/1980 | US4233374 Chromates of silver or thallium and bismuth |
| 10/28/1980 | US4230677 Leaching, ignition |
| 09/03/1980 | EP0014806A1 Processing of chromium ore |
| 08/20/1980 | EP0014408A2 Process for preparing "kosmochlor" pigments (sodium chromium double silicate)and use thereof |
| 06/17/1980 | CA1079488A1 Treatment method of raw materials containing titanium |
| 06/10/1980 | US4207295 Roasting with sodium carbonate and calcium oxide, leaching with water, precipitation of impurities |
| 06/10/1980 | CA1079028A1 Process for the production of chromium dioxide |
| 05/28/1980 | EP0011607A1 Metallic chromate pigment compositions and process for preparing them |
| 03/25/1980 | US4194992 Method for the polymerization of olefines and means suitable thereto |
| 03/11/1980 | CA1073566A1 Process for treating an acid waste liquid |
| 02/06/1980 | EP0007764A1 Stabilized ferromagnetic chromium dioxide and a process for preparing it |
| 01/29/1980 | CA1070503A1 Chromite recovery from chromite-bearing ore |
| 01/22/1980 | CA1070053A1 Chrome yellow pigment with improved thermal stability |
| 01/15/1980 | US4184016 Double chromate of silver and bismuth |
| 01/15/1980 | US4183758 Zinc chromium chromate pigment |
| 11/27/1979 | US4176056 Cyclic operation of a bed of mixed ion exchange resins |
| 11/06/1979 | US4173618 Process for removal of alumina from aqueous alkali metal chromate solutions |
| 10/02/1979 | US4169802 Stabilized ferromagnetic chromium dioxide and process for its preparation |
| 09/18/1979 | US4168240 Process for the preparation of a chrome tanning agent and Glauber's salt |
| 08/28/1979 | US4166098 Solvent extraction |
| 08/28/1979 | US4166045 Purification of combustion catalysts and solid propellant compositions containing the same |
| 08/21/1979 | USRE30081 Ion exchange chromate removal |
| 08/07/1979 | USRE30066 Method for selectively removing chromates |
| 08/07/1979 | CA1059770A1 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 07/24/1979 | US4162295 Method for production of alkali metal chromates from chrome ores |
| 06/19/1979 | CA1056579A1 Powder-and-gas reactions |
| 05/29/1979 | US4156661 Diffusion doping with alkaline earth metal to decrease resistance |
| 04/18/1979 | EP0001524A1 Novel ferromagnetic material based on chromium dioxide and rhodium dioxide, and its preparation |
| 03/20/1979 | US4145400 Coprecipitation salts of aluminum and cobalt or nickel with sodium carbonate |
| 03/13/1979 | US4144145 Process for recovery of reusable chromic acid from the waste chromic acid solution containing impurities |
| 02/27/1979 | CA1049250A1 Process for preparing ferromagnetic chromium dioxide |
| 02/13/1979 | US4139460 Reduction with metal sulfide |
| 02/06/1979 | US4138466 Reacting titanium oxide with the calcium |
| 01/16/1979 | CA1046239A1 Method for producing a ferromagnetic chromium oxide |
| 01/09/1979 | CA1045757A1 Production of low - sulfur chromium (iii) oxide pigment |
| 12/19/1978 | CA1044468A1 Extracting of iron ore and chromium from nickel lateritic ores |
| 11/28/1978 | US4127643 Preparation of pigmentary chromic oxide |
| 11/21/1978 | US4126714 Process for treating chromium dioxide |
| 10/17/1978 | CA1040582A1 Ion exchange removal of dichromates in electrolysis |
| 09/19/1978 | CA1038629A1 Alumina removal from chromate leach liquors |
| 09/05/1978 | US4112046 Disintegration of silica-rich chromite |
| 08/22/1978 | US4108596 Recovery of chromium values from waste streams by the use of alkaline magnesium compounds |
| 07/11/1978 | US4100154 Process for recovery and separation of nutritious protein hydrolysate and chromium from chrome leather scrap |
| 06/20/1978 | US4096087 Electrochromic and photochromic material and a method of fabrication of said material |
| 05/30/1978 | US4092439 Process for obtaining chromium dioxide CrO2 |
| 04/25/1978 | US4086150 Chromate removal by precipitation |
| 04/18/1978 | US4084936 Adding lead or bismuth or their oxides, hydroxides or salts |
| 04/11/1978 | US4083810 Vibratory spiral conveyor chute |
| 04/04/1978 | US4082832 Treatment of raw materials containing titanium |
| 01/10/1978 | US4068038 Stabilized chromium dioxide compositions |
| 01/10/1978 | US4067747 Production of improved chromium oxide green pigment |
| 01/03/1978 | US4066734 Oxidation |
| 12/27/1977 | US4065544 Finely divided metal oxides and sintered objects therefrom |
| 10/04/1977 | US4052225 Production of low-sulfur chromium (iii) oxide pigment |
| 09/20/1977 | US4049772 Process for the recovery of chromic acid solution from waste water containing chromate ions |
| 09/13/1977 | US4048472 Vibratory spiral conveyor chute and a resistance heating element |
| 09/13/1977 | US4048283 Removal of heavy metals from aqueous solutions |
| 08/30/1977 | US4045544 Process for the preparation of ferromagnetic chromium dioxide |
| 08/30/1977 | US4045340 Method for recovering and exploiting waste of the chromic anhydride production |
| 08/09/1977 | US4040860 Chromium oxide pigment from sodium chromate dihydrate plus ammonium salt |
| 07/12/1977 | US4035151 Powder-and-gas vibrating reactor |
| 06/28/1977 | US4032624 Process for preparing pure silver chromate for electrochemical cells |
| 06/14/1977 | US4029735 From ammonium chromate and calcium hydroxide |
| 06/14/1977 | US4029734 Recovery of chromium values |
| 04/19/1977 | US4018690 Process for preparing sulfur-containing ferromagnetic chromium oxide |
| 04/12/1977 | US4017328 Treated with silica |
| 04/05/1977 | US4016054 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 03/15/1977 | US4012484 Chromite recovery from chromite-bearing ore |
| 09/21/1976 | US3981965 Suppression of water pollution caused by solid wastes containing chromium compounds |
| 09/21/1976 | US3981964 Sodium sulphate compositions and their production |