Inventor · disambiguated record
Bernd Drapal
Also filed as: DRAPAL BERND
8 granted patents·1 pending application·69 citations·filing 1997–2020
83Inventor score
Technology areasC07C
Top patents by PatentIndex Score
9 records- 0190US6063968AMethod for the production of trimethylhydroquinoneDEGUSSA·Filed 1997·Granted May 16, 2000·42 cites·2 claims
- 0281US6380437B1Process for the preparation of unsaturated 4,5-allene ketones, 3,5-diene ketones and the corresponding saturated ketonesDEGUSSA·Filed 2000·Granted Apr 30, 2002·15 cites·9 claims
- 0377US9156782B2Process for the preparation of methionineKOERFER MARTIN·Filed 2013·Granted Oct 13, 2015·2 cites·10 claims
- 0461US6586635B2Process for the preparation of unsaturated ketonesDEGUSSA·Filed 2002·Granted Jul 1, 2003·3 cites·20 claims
- 0560US6103924AProcess for the preparation of 2,3,5-trimethylhydroquinone diestersDEGUSSA·Filed 1999·Granted Aug 15, 2000·7 cites·21 claims
- 0655US9464045B2Process for the preparation of methionineKOERFER MARTIN·Filed 2015·Granted Oct 11, 2016·0 cites·12 claims
- 0754US12195422B2Process for the preparation of D,L-methionineEVONIK OPERATIONS GMBH·Filed 2020·Granted Jan 14, 2025·0 cites·14 claims
- 0850US10919848B2Process for preparing methionineEVONIK OPERATIONS GMBH·Filed 2018·Granted Feb 16, 2021·0 cites·12 claims
- 0936US2002161263A1Process for the preparation of ketonesDEGUSSA·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →