Inventor · disambiguated record
William R. Purdum
Also filed as: PURDUM WILLIAM R · PURDUM WILLIAM RONALD
8 granted patents·1 pending application·27 citations·filing 1981–2008
83Inventor score
Top patents by PatentIndex Score
9 records- 0179US7256320B2Method for defeat of bulk chemical warfare agentsCLEAN EARTH TECH LLC·Filed 2005·Granted Aug 14, 2007·4 cites·5 claims
- 0267US4442044AProcess for preparing monoesters and diesters of N-alkyl substituted amino methyl phosphonic acidMONSANTO CO·Filed 1983·Granted Apr 10, 1984·8 cites·3 claims
- 0359US4483705AAlkylphosphonate diesters and monoesters of N-phosphonomethylglycinate as herbicidesMONSANTO CO·Filed 1983·Granted Nov 20, 1984·5 cites·25 claims
- 0457US4388102AAlkylphosphonate diesters of N-phosphonomethylglycinate as herbicidesMONSANTO CO·Filed 1981·Granted Jun 14, 1983·4 cites·36 claims
- 0551US4388103AAlkylphosphonate monoesters of N-phosphonomethylglycinate as herbicidesMONSANTO CO·Filed 1981·Granted Jun 14, 1983·3 cites·27 claims
- 0645US4395275AMono and diesters of N-phosphonomethylglycinates as herbicidesMONSANTO CO·Filed 1981·Granted Jul 26, 1983·2 cites·12 claims
- 0738US2009165528A1Method and Apparatus for Gas Filter TestingCLEAN EARTH TECH LLC·Filed 2008·Application pending·0 cites
- 0837US4391625ADiesters of N-alkyl substituted amino methyl phosphonic acid useful as herbicidesMONSANTO CO·Filed 1981·Granted Jul 5, 1983·1 cites·35 claims
- 0932US4385921ACyanoalkylphosphonate diesters of N-phosphonomethylglycinonitrile as herbicidesMONSANTO CO·Filed 1981·Granted May 31, 1983·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →