Inventor · disambiguated record
William C. Ziegenhain
Also filed as: ZIEGENHAIN WILLIAM C
13 granted patents·147 citations·filing 1974–1991
92Inventor score
Top patents by PatentIndex Score
13 records- 0186US4254287ARemoval of catalyst from ethoxylates by centrifugationCONOCO INC·Filed 1979·Granted Mar 3, 1981·23 cites·2 claims
- 0275US4443634ARemoval of impuritiesCONOCO INC·Filed 1983·Granted Apr 17, 1984·14 cites·7 claims
- 0375US3987155AHigh-porosity, high-surface area, low-bulk density aluminaCONTINENTAL OIL CO·Filed 1975·Granted Oct 19, 1976·17 cites·6 claims
- 0462US4024231AProducing alumina having a majority of pore diameters of 35-80ACONTINENTAL OIL CO·Filed 1974·Granted May 17, 1977·15 cites·6 claims
- 0559US4954330AProcess for purifying hydrogen fluorideDU PONT·Filed 1989·Granted Sep 4, 1990·18 cites·8 claims
- 0657US4458492AMethod for the recovery of geothermal energyCONOCO INC·Filed 1978·Granted Jul 10, 1984·17 cites·10 claims
- 0757US4296057AMethod of making alumina fibersCONOCO INC·Filed 1980·Granted Oct 20, 1981·9 cites·3 claims
- 0851US3979504ACalcining method for aluminaCONTINENTAL OIL CO·Filed 1975·Granted Sep 7, 1976·8 cites·5 claims
- 0946US5100639AProcess for purifying hydrogen fluorideDU PONT·Filed 1991·Granted Mar 31, 1992·9 cites·20 claims
- 1043US4267161AMethod of making aluminum chlorohydrateCONOCO INC·Filed 1980·Granted May 12, 1981·4 cites·8 claims
- 1141US3975231AMethod for producing concentrated alumina slurriesCONTINENTAL OIL CO·Filed 1975·Granted Aug 17, 1976·4 cites·7 claims
- 1240US3933685AMethod for producing catalyst impregnated alumina extrudatesCONTINENTAL OIL CO·Filed 1974·Granted Jan 20, 1976·7 cites·7 claims
- 1337US4133871AProcess for preparing aluminaCONTINENTAL OIL CO·Filed 1977·Granted Jan 9, 1979·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →