Inventor · disambiguated record
Ferdinand Theissen
Also filed as: THEISSEN FERDINAND
5 granted patents·158 citations·filing 1972–1998
83Inventor score
Files withDEGUSSA5
Top patents by PatentIndex Score
5 records- 0192US5770769AProcess for the preparation of D,L-methionine or the salt thereofDEGUSSA·Filed 1996·Granted Jun 23, 1998·59 cites·31 claims
- 0292US4048232AProcess for the production of 3-methylmercaptopropionaldehydeDEGUSSA·Filed 1973·Granted Sep 13, 1977·29 cites·8 claims
- 0387US5990349AProcess for the preparation of D,L-methionine or the salt thereofDEGUSSA·Filed 1998·Granted Nov 23, 1999·42 cites·17 claims
- 0484US4303621AProcess for the recovery of methionine and potassium bicarbonateDEGUSSA·Filed 1978·Granted Dec 1, 1981·25 cites·13 claims
- 0549US4136108AProcess for the production of malononitrileDEGUSSA·Filed 1972·Granted Jan 23, 1979·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →