Inventor · disambiguated record
William J. Zeman
Also filed as: ZEMAN WILLIAM J
5 granted patents·248 citations·filing 1988–2000
84Inventor score
Top patents by PatentIndex Score
5 records- 0193US6458343B1Quaternary compounds, compositions containing them, and uses thereofGOLDSCHMIDT CHEMICAL CORP·Filed 2000·Granted Oct 1, 2002·167 cites·58 claims
- 0268US5716498AProcess for softening paper in manufactureWITCO CORP·Filed 1996·Granted Feb 10, 1998·34 cites·7 claims
- 0364US4913841AAlkaline tolerant sulfobetaine amphoteric surfactantsSHEREX CHEM·Filed 1988·Granted Apr 3, 1990·24 cites·5 claims
- 0449US5015412AAlkaline tolerant sulfobetaine amphoteric surfactantsSHEREX CHEM·Filed 1989·Granted May 14, 1991·15 cites·5 claims
- 0537US5200097AProcess for making a particulate water dispersible free flowing fabric softener compositionSHEREX CHEM·Filed 1990·Granted Apr 6, 1993·8 cites·13 claims
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