Inventor · disambiguated record
Johannes Greefkes
Also filed as: GREEFKES JOHANNES · GREEFKES JOHANNES ANTON
4 granted patents·20 citations·filing 1976–1996
72Inventor score
Top patents by PatentIndex Score
4 records- 0155US4097693ASwitching system for an automatic telecommunication exchange with a plurality of intermediate lines that are grounded when not in usePHILIPS CORP·Filed 1976·Granted Jun 27, 1978·7 cites·4 claims
- 0231US5609841AMethod and apparatus for treating a flow of gas containing oxidized sulphur compoundsHOOGOVENS STAAL BV·Filed 1993·Granted Mar 11, 1997·4 cites·11 claims
- 0331US5225176AProcess for the removal of sulfur oxide constituents from a waste gasHOOGOVENS GROEP BV·Filed 1991·Granted Jul 6, 1993·6 cites·10 claims
- 0420US5980725AMethod for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereofEUROP DE DEZINGAGE COMP·Filed 1996·Granted Nov 9, 1999·3 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →