Inventor · disambiguated record
Dean A. Van Leirsburg
Also filed as: VAN LEIRSBURG DEAN A
10 granted patents·281 citations·filing 1982–1987
91Inventor score
Files withCHEVRON RES10
Top patents by PatentIndex Score
10 records- 0194US4500495ARecovering metals from spent hydroprocessing catalystsCHEVRON RES·Filed 1983·Granted Feb 19, 1985·49 cites·8 claims
- 0292US4432953ALeaching cobalt from spent hydroprocessing catalysts with sulfur dioxideCHEVRON RES·Filed 1982·Granted Feb 21, 1984·39 cites·6 claims
- 0391US4434141ARecovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum and vanadium and sequential extraction of nickel and cobaltCHEVRON RES·Filed 1982·Granted Feb 28, 1984·36 cites·4 claims
- 0489US4514369ARecovery of cobalt, molybdenum, nickel, tungsten and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum, tungsten and vanadium and sequential extraction of nickel and cobaltCHEVRON RES·Filed 1984·Granted Apr 30, 1985·32 cites·5 claims
- 0589US4409190AExtracting cobalt from spent hydroprocessing catalysts with cyanideCHEVRON RES·Filed 1982·Granted Oct 11, 1983·31 cites·3 claims
- 0682US4851380AProcess for regenerating sulfur contaminated reforming catalystsCHEVRON RES·Filed 1987·Granted Jul 25, 1989·47 cites·20 claims
- 0782US4432949ARecovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by precipitating vanadium and subsequent serial ion exchangeCHEVRON RES·Filed 1982·Granted Feb 21, 1984·23 cites·2 claims
- 0859US4434140AStripping a solution containing molybdenum and vanadium valuesCHEVRON RES·Filed 1982·Granted Feb 28, 1984·9 cites·4 claims
- 0958US4442074ARecovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by serial extraction of nickel and cobalt and coextracting molybdenum and vanadiumCHEVRON RES·Filed 1982·Granted Apr 10, 1984·8 cites·4 claims
- 1055US4515757AStripping a solution containing molybdenum, tungsten and/or vanadium valuesCHEVRON RES·Filed 1984·Granted May 7, 1985·7 cites·10 claims
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