Inventor · disambiguated record
Bernd Hupfeld
Also filed as: HUPFELD BERND
7 granted patents·1 pending application·36 citations·filing 1990–2019
82Inventor score
Top patents by PatentIndex Score
8 records- 0183US11220942B2System and method for exhaust-gas aftertreatment of an internal combustion engineVOLKSWAGEN AG·Filed 2018·Granted Jan 11, 2022·7 cites·8 claims
- 0261US5886209APreparation of 2-(4-hydroxyphenoxy) propionatesBASF AG·Filed 1996·Granted Mar 23, 1999·8 cites·17 claims
- 0361US5072049AProcess for the preparation of bis(4-hydroxyphenyl) sulfoneBASF AG·Filed 1990·Granted Dec 10, 1991·7 cites·8 claims
- 0457US10781801B2Axial-piston motor and cyclic process deviceVOLKSWAGEN AG·Filed 2019·Granted Sep 22, 2020·0 cites·10 claims
- 0555US5298592APreparation of polyaryl ethers with nitrogen compound catalystsBASF AG·Filed 1992·Granted Mar 29, 1994·10 cites·7 claims
- 0637US5256826APreparation of aromatic carbonyl or sulfonyl compounds with an aryl ether structureBASF AG·Filed 1992·Granted Oct 26, 1993·2 cites·6 claims
- 0737US2002134075A1Method for operation of a nox storage catalyst in internal combustion enginesFiled 2000·Application pending·0 cites
- 0831US5389110AAzo dyes and process of dyeing with azo dyes which contain an N-(hydroxysulfonylphenylalkyl)pyridone coupling componentBASF AG·Filed 1993·Granted Feb 14, 1995·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →