Inventor · disambiguated record
Douglas J. Dudgeon
Also filed as: DUDGEON DOUGLAS J
8 granted patents·1 pending application·116 citations·filing 1997–2001
86Inventor score
Top patents by PatentIndex Score
9 records- 0192US6232495B1Methods for treating cobalt catalyst in oxidation mixtures resulting from oxidation of hydrocarbons to dibasic acidsRPC INC·Filed 1999·Granted May 15, 2001·75 cites·24 claims
- 0281US6326455B2Methods for treating cobalt catalyst in oxidation mixtures resulting from oxidation of hydrocarbons to dibasic acidsRPC INC·Filed 2001·Granted Dec 4, 2001·17 cites·72 claims
- 0366US5908589AMethods for separating catalyst from oxidation mixtures containing dibasic acidsTWENTY FIRST CENTURY RES CORP·Filed 1997·Granted Jun 1, 1999·8 cites·61 claims
- 0454US6129875AProcess of separating catalyst from oxidation mixturesRPC INC·Filed 1999·Granted Oct 10, 2000·5 cites·30 claims
- 0552US6433220B1Methods of extracting catalyst from a reaction mixture in the oxidation of cyclohexane to adipic acidRPC INC·Filed 1999·Granted Aug 13, 2002·8 cites·22 claims
- 0640US6218573B1Methods of recovering catalyst in solution in the oxidation of cyclohexane to adipic acidRPC INC·Filed 1999·Granted Apr 17, 2001·3 cites·51 claims
- 0737US6417128B1Methods and replacing water and cyclohexanone with acetic acid in aqueous solutions of catalystRPC INC·Filed 2000·Granted Jul 9, 2002·0 cites·32 claims
- 0834US6433221B1Methods of separating catalyst in solution from a reaction mixture produced by oxidation of cyclohexane to adipic acidRPC INC·Filed 1999·Granted Aug 13, 2002·0 cites·36 claims
- 0932US2001001649A1Methods and devices for separating catalyst from oxidation mixtures containing dibasic acidsFiled 1998·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →