Inventor · disambiguated record
Otto E. Prenn
Also filed as: PRENN OTTO E
4 granted patents·117 citations·filing 1976–1987
80Inventor score
Top patents by PatentIndex Score
4 records- 0182US4838062AProcess for upset forging of long stands of metal bar stockSTELCO INC·Filed 1987·Granted Jun 13, 1989·49 cites·20 claims
- 0273US4050514AParaffin sucker rod scraper and rod centralizerCANADA STEEL CO·Filed 1976·Granted Sep 27, 1977·38 cites·6 claims
- 0357US4168392AComposite electrode with non-consumable upper sectionCANADA STEEL CO·Filed 1978·Granted Sep 18, 1979·16 cites·4 claims
- 0454US4121042AComposite electrode with non-consumable upper sectionCANADA STEEL CO·Filed 1976·Granted Oct 17, 1978·14 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →