Inventor · disambiguated record
John R. Duchek
Also filed as: DUCHEK JOHN R · DUCHEK JOHN ROBERT
7 granted patents·1 pending application·33 citations·filing 1992–2006
79Inventor score
Top patents by PatentIndex Score
8 records- 0186US7402686B2Cannabinoid crystalline derivatives and process of cannabinoid purificationMALLINCKRODT INC·Filed 2003·Granted Jul 22, 2008·24 cites·15 claims
- 0260US6559319B2Synthesis of compounds useful in the manufacture of ketorolacMALLINCKRODT INC·Filed 2002·Granted May 6, 2003·1 cites·7 claims
- 0358US5227526AResolution of 3-dimethylamino-2-methylpropiophenone (3-DAMP)MALLINCKRODT SPEC CHEM·Filed 1992·Granted Jul 13, 1993·7 cites·18 claims
- 0448US6489491B2Synthesis of compounds useful in the manufacture of ketorolacMALLINCKRODT INC·Filed 2002·Granted Dec 3, 2002·0 cites·6 claims
- 0540US7323607B2Process for preparation of (+)-p-mentha-2,8-diene-1-olMALLINCKRODT INC·Filed 2004·Granted Jan 29, 2008·0 cites·22 claims
- 0639US2008319227A1Processes for the Preparation of Modafinil and Analogs ThereofLIANG SIDNEY·Filed 2006·Application pending·0 cites
- 0734US6376681B1Synthesis of compounds useful in the manufacture of ketorolacMALLINCKODT INC·Filed 1999·Granted Apr 23, 2002·1 cites·4 claims
- 0828US5312970AMethod of preparing D-propoxypheneMALLINCKRODT SPEC CHEM·Filed 1992·Granted May 17, 1994·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →