Assignee
BOLIDEN AB
102 granted patents·1,594 citations·filing 1973–1996
Top patents by PatentIndex Score
102 records- 0194US4233274AMethod of extracting and recovering mercury from gasesBOLIDEN AB·Filed 1979·Granted Nov 11, 1980·144 cites·12 claims
- 0288US4566975AMethod for purifying aqueous solutionsBOLIDEN AB·Filed 1984·Granted Jan 28, 1986·79 cites·12 claims
- 0387US4087274AMethod of producing a partially reduced product from finely-divided metal sulphidesBOLIDEN AB·Filed 1976·Granted May 2, 1978·39 cites·24 claims
- 0487US3948640AMethod of carrying out heat-requiring chemical and/or physical processesBOLIDEN AB·Filed 1974·Granted Apr 6, 1976·36 cites·58 claims
- 0586US4176042AMethod of treating shalesBOLIDEN AB·Filed 1978·Granted Nov 27, 1979·38 cites·13 claims
- 0684US3948645AMethod of carrying out heat-requiring chemical and/or physical processes in a fluidized bedBOLIDEN AB·Filed 1974·Granted Apr 6, 1976·24 cites·58 claims
- 0782US4708522AStorage complex for storing radioactive material in rock formationBOLIDEN AB·Filed 1985·Granted Nov 24, 1987·33 cites·13 claims
- 0880US4345990AMethod for recovering oil and/or gas from carbonaceous materialsBOLIDEN AB·Filed 1980·Granted Aug 24, 1982·31 cites·12 claims
- 0980US4069041AMethod of recovering non-ferrous metals from sulphidic materialsBOLIDEN AB·Filed 1976·Granted Jan 17, 1978·23 cites·19 claims
- 1079US4048341AProcess and an apparatus for increasing the feed value of lignocellulosic materialsBOLIDEN AB·Filed 1975·Granted Sep 13, 1977·47 cites·12 claims
- 1178US4663055AMethod and apparatus for distributing water purifying chemicalsBOLIDEN AB·Filed 1984·Granted May 5, 1987·45 cites·8 claims
- 1278US4378340AMethod of purifying phosphoric acid of heavy metalsBOLIDEN AB·Filed 1980·Granted Mar 29, 1983·29 cites·10 claims
- 1378US4182780AProcess and an apparatus for alkali-treatment of lignocellulosic materialBOLIDEN AB·Filed 1977·Granted Jan 8, 1980·45 cites·2 claims
- 1476US4571260AMethod for recovering the metal values from materials containing tin and/or zincBOLIDEN AB·Filed 1985·Granted Feb 18, 1986·25 cites·18 claims
- 1576US4489046AMethod for working-up arsenic-containing wasteBOLIDEN AB·Filed 1981·Granted Dec 18, 1984·21 cites·6 claims
- 1676US3984229AMethod for producing coarse powder, hardened iron oxide material from finely divided raw material substantially consisting of hematite and/or magnetiteBOLIDEN AB·Filed 1974·Granted Oct 5, 1976·17 cites·7 claims
- 1775US4144055AMethod of producing blister copperBOLIDEN AB·Filed 1977·Granted Mar 13, 1979·17 cites·10 claims
- 1874US4856716AGyratory crusher controlBOLIDEN AB·Filed 1987·Granted Aug 15, 1989·33 cites·14 claims
- 1974US4585477AMethod for separating and recovering nickel and copper from complex materialsBOLIDEN AB·Filed 1985·Granted Apr 29, 1986·21 cites·15 claims
- 2074US4492924AMethod and apparatus for ore prospecting utilizing an aerial transmitter and aerial receiverBOLIDEN AB·Filed 1980·Granted Jan 8, 1985·35 cites·8 claims
- 2174US4017308ASmelting and reduction of oxidic and sulphated lead materialBOLIDEN AB·Filed 1974·Granted Apr 12, 1977·20 cites·12 claims
- 2273US4415360AMethod for working-up metal-containing waste productsBOLIDEN AB·Filed 1982·Granted Nov 15, 1983·18 cites·11 claims
- 2373US4060464AMethod for extracting and recovering iron and nickel in metallic formBOLIDEN AB·Filed 1976·Granted Nov 29, 1977·18 cites·17 claims
- 2471US4443417AMethod for separating gaseous, elementary mercury from a gasBOLIDEN AB·Filed 1982·Granted Apr 17, 1984·31 cites·8 claims
- 2571US3942727AGrinding plantBOLIDEN AB·Filed 1974·Granted Mar 9, 1976·22 cites·9 claims
- 2670US4138231AMethod of wet-cleaning gases containing sulfur dioxide, halogens and arsenic from pyrometallurgical treatment of sulphidic materialsBOLIDEN AB·Filed 1977·Granted Feb 6, 1979·31 cites·11 claims
- 2766US4571261AMethod for recovering lead from waste lead productsBOLIDEN AB·Filed 1984·Granted Feb 18, 1986·23 cites·18 claims
- 2865US4626279AMethod for processing copper smelting materials and the like containing high percentages of arsenic and/or antimonyBOLIDEN AB·Filed 1984·Granted Dec 2, 1986·16 cites·13 claims
- 2965US4536384AStable solutions of basic aluminium sulphate containing polynucleate aluminium hydroxide sulphate complexesBOLIDEN AB·Filed 1984·Granted Aug 20, 1985·14 cites·4 claims
- 3065US4008075AAutogenous smelting of lead in a top blown rotary converterBOLIDEN AB·Filed 1974·Granted Feb 15, 1977·10 cites·11 claims
- 3165US3985529AMethod for the production of liquid sulphur dioxideBOLIDEN AB·Filed 1974·Granted Oct 12, 1976·11 cites·8 claims
- 3264US3932149AMethod for the purification of sulphuric acid containing mercuryBOLIDEN AB·Filed 1974·Granted Jan 13, 1976·13 cites·14 claims
- 3361US4640751AMethod for the purification of gases containing mercury and simultaneous recovery of the mercury in metallic formBOLIDEN AB·Filed 1985·Granted Feb 3, 1987·30 cites·8 claims
- 3461US4612171AMethod for recovering metal values from materials containing copper and/or precious metalsBOLIDEN AB·Filed 1984·Granted Sep 16, 1986·12 cites·9 claims
- 3557US4846582APolymer dissolverBOLIDEN AB·Filed 1986·Granted Jul 11, 1989·19 cites·18 claims
- 3657US4725164AMethod of excavating a storage complex in rock for storing radioactive wasteBOLIDEN AB·Filed 1986·Granted Feb 16, 1988·13 cites·8 claims
- 3757US4560540AMethod for recovering useful products from waste products obtained when manufacturing aluminium fluorideBOLIDEN AB·Filed 1982·Granted Dec 24, 1985·11 cites·11 claims
- 3856US4587847AMethod for indicating concealed depositsBOLIDEN AB·Filed 1982·Granted May 13, 1986·18 cites·23 claims
- 3955US4921613AMethod for purifying resin-containing waste liquor in the manufacture of cellulose pulpsBOLIDEN AB·Filed 1988·Granted May 1, 1990·26 cites·14 claims
- 4055US4512798AMethod for producing lead from sulphidic and oxidic and/or sulphatic lead raw materialsBOLIDEN AB·Filed 1984·Granted Apr 23, 1985·9 cites·11 claims
- 4154US4210290AMethod and apparatus for controllably supplying material to a rod mill in accordance with power consumption of the rod mill motorBOLIDEN AB·Filed 1978·Granted Jul 1, 1980·16 cites·5 claims
- 4254US3953793AOptimal determination of signals affected by interference or disturbanceBOLIDEN AB·Filed 1974·Granted Apr 27, 1976·10 cites·2 claims
- 4353US4705562AMethod for working-up waste products containing valuable metalsBOLIDEN AB·Filed 1986·Granted Nov 10, 1987·9 cites·15 claims
- 4453US4515631AMethod for producing blister copperBOLIDEN AB·Filed 1984·Granted May 7, 1985·8 cites·4 claims
- 4552US4613365AMethod for recovering precious metalsBOLIDEN AB·Filed 1985·Granted Sep 23, 1986·9 cites·16 claims
- 4652US4557918AMethod for producing silicaBOLIDEN AB·Filed 1983·Granted Dec 10, 1985·10 cites·9 claims
- 4752US4555942AMethod for continually controlling the quality of cathode copperBOLIDEN AB·Filed 1985·Granted Dec 3, 1985·11 cites·8 claims
- 4852US4520003AMethod of manufacturing sulphur-trioxide for the production of sulphuric acidBOLIDEN AB·Filed 1982·Granted May 28, 1985·11 cites·6 claims
- 4952US4474506AMethod for constructing in rock storage locations for liquid products, for example oil productsBOLIDEN AB·Filed 1982·Granted Oct 2, 1984·11 cites·10 claims
- 5052US4417142AMethod and apparatus for detecting alpha-emitting substancesBOLIDEN AB·Filed 1981·Granted Nov 22, 1983·14 cites·8 claims
Showing the top 50 of 102 patent records by PatentIndex Score.
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