Inventor · disambiguated record
Friedrich-Otto Koch
Also filed as: KOCH FRIEDRICH O · KOCH FRIEDRICH-OTTO
7 granted patents·191 citations·filing 1982–1990
88Inventor score
Top patents by PatentIndex Score
7 records- 0193US4721536AMethod for making steel tubes or pipes of increased acidic gas resistanceHOESCH AG·Filed 1986·Granted Jan 26, 1988·55 cites·24 claims
- 0285US4688319AMulti-layer helical seam steel pipeGROSS HEINZ·Filed 1984·Granted Aug 25, 1987·29 cites·11 claims
- 0378US4823847AMulti-layer helical seam steel pipeHOESCH WERKE AG·Filed 1982·Granted Apr 25, 1989·31 cites·6 claims
- 0467US4531409ATest system for defect determination in welding seamsHOESCH WERKE AG·Filed 1982·Granted Jul 30, 1985·24 cites·11 claims
- 0561US4535215AMethod and device for controlling the welding process in the manufacturing of pipes with longitudinal seamsHOESCH WERKE AG·Filed 1983·Granted Aug 13, 1985·16 cites·4 claims
- 0656US4621176AMethod of and device for monitoring and/or controlling welding current in the high-frequency resistance pressure welding of pipes with longitudinal seamsHOESCH WERKE AG·Filed 1985·Granted Nov 4, 1986·16 cites·13 claims
- 0740US4969671AGas-tight joint for pipe linings and risersHOECHST AG·Filed 1990·Granted Nov 13, 1990·20 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →