Inventor · disambiguated record
Leo W. Beckstead
Also filed as: BECKSTEAD LEO W
22 granted patents·266 citations·filing 1981–1989
95Inventor score
Files withAMAX INC22
Top patents by PatentIndex Score
22 records- 0195US4900522ASeparation of nickel and cobalt from sulfate solutions by solvent extractionAMAX INC·Filed 1986·Granted Feb 13, 1990·50 cites·5 claims
- 0294US4443415ARecovery of V2 O5 and nickel values from petroleum cokeAMAX INC·Filed 1982·Granted Apr 17, 1984·68 cites·8 claims
- 0384US4551314AProcess for improving solvent extraction operation using two mixersAMAX INC·Filed 1984·Granted Nov 5, 1985·27 cites·11 claims
- 0474US4328190ASolvent extraction of tungsten from aqueous tungstate solutionsAMAX INC·Filed 1981·Granted May 4, 1982·16 cites·12 claims
- 0572US4450144AAmmonium hydroxide stripping of tungsten from organic solventsAMAX INC·Filed 1982·Granted May 22, 1984·15 cites·6 claims
- 0666US4311679ATreatment of sodium tungstate leach liquor containing dissolved silica, phosphorus, and fluorine impuritiesAMAX INC·Filed 1981·Granted Jan 19, 1982·12 cites·8 claims
- 0759US4963336APurification of APTAMAX INC·Filed 1989·Granted Oct 16, 1990·11 cites·7 claims
- 0859US4397821APrecipitation of synthetic scheeliteAMAX INC·Filed 1982·Granted Aug 9, 1983·8 cites·11 claims
- 0952US4303622AChemical treatment of low-grade wolframite concentrate having high Mo/WO3 ratioAMAX INC·Filed 1981·Granted Dec 1, 1981·6 cites·16 claims
- 1046US4325919AAutoclave soda digestion of scheelite concentrates with feedback controlAMAX INC·Filed 1981·Granted Apr 20, 1982·6 cites·20 claims
- 1143US4351808AAutoclave soda digestion of scheelite concentratesAMAX INC·Filed 1981·Granted Sep 28, 1982·5 cites·18 claims
- 1242US4761177AProduction of cobalt and nickel powderAMAX INC·Filed 1987·Granted Aug 2, 1988·9 cites·9 claims
- 1340US4490339AProcess for recovering tungsten from MoS3 /WS3 precipitatesAMAX INC·Filed 1984·Granted Dec 25, 1984·5 cites·4 claims
- 1440US4320095AAutoclave soda digestion of refractory scheelite concentratesAMAX INC·Filed 1981·Granted Mar 16, 1982·4 cites·22 claims
- 1539US4320096ACombined autoclave soda digestion of wolframite and scheeliteAMAX INC·Filed 1981·Granted Mar 16, 1982·3 cites·19 claims
- 1639US4313914AAutoclave tungstate upgrading of scheelite concentratesAMAX INC·Filed 1981·Granted Feb 2, 1982·3 cites·19 claims
- 1739US4303623ASeparation of trace molybdenum from tungstate solutionsAMAX INC·Filed 1981·Granted Dec 1, 1981·3 cites·27 claims
- 1837US4342728AProcess for digesting tungsten ores containing organic matterAMAX INC·Filed 1981·Granted Aug 3, 1982·3 cites·10 claims
- 1934US4917726AChromium recovery processAMAX INC·Filed 1988·Granted Apr 17, 1990·6 cites·7 claims
- 2033US4810303AProduction of hexagonal cadmium sulfide pigmentAMAX INC·Filed 1987·Granted Mar 7, 1989·1 cites·5 claims
- 2132US4504448AActivated carbon adsorption of flotation reagents from tungsten solutionsAMAX INC·Filed 1984·Granted Mar 12, 1985·4 cites·4 claims
- 2231US4338287AProcess for conditioning tungsten concentratesAMAX INC·Filed 1981·Granted Jul 6, 1982·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →