Inventor · disambiguated record
Ludwig Devrient
Also filed as: DEVRIENT LUDWIG
6 granted patents·280 citations·filing 1980–1986
87Inventor score
Top patents by PatentIndex Score
6 records- 0189US4597592AIdentification card with duplicate dataMAURER THOMAS·Filed 1983·Granted Jul 1, 1986·48 cites·6 claims
- 0289US4496961ACheck paper that is protected against forgery and tamperingGAO GES AUTOMATION ORG·Filed 1982·Granted Jan 29, 1985·46 cites·14 claims
- 0383US4544181AIdentification cardGAO GES AUTOMATION ORG·Filed 1980·Granted Oct 1, 1985·103 cites·8 claims
- 0479US4672891AMethod of producing an identification cardGAO GES AUTOMATION ORG·Filed 1986·Granted Jun 16, 1987·38 cites·7 claims
- 0573US4504083AGuilloche identification cardGAO GES AUTOMATION ORG·Filed 1982·Granted Mar 12, 1985·25 cites·16 claims
- 0670US4629630ACheck paper that is protected against forgery and tamperingGAO GES AUTOMATION ORG·Filed 1984·Granted Dec 16, 1986·20 cites·18 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →