Inventor · disambiguated record
William J. Schumacher
Also filed as: SCHUMACHER WILLIAM J
8 granted patents·190 citations·filing 1975–1991
89Inventor score
Files withARMCO INC3ARMCO STEEL CORP2ACME GENERAL CORP1BALTIMORE SPECIALTY STEELS COR1SCHUMACHER WILLIAM J1
Top patents by PatentIndex Score
8 records- 0193US5089067AMartensitic stainless steelARMCO INC·Filed 1991·Granted Feb 18, 1992·62 cites·16 claims
- 0282US4946644AAustenitic stainless steel with improved castabilityBALTIMORE SPECIALTY STEELS COR·Filed 1989·Granted Aug 7, 1990·33 cites·11 claims
- 0375US4014072AFascia and track for a sliding doorACME GENERAL CORP·Filed 1975·Granted Mar 29, 1977·35 cites·4 claims
- 0473US4494988AGalling and wear resistant steel alloyARMCO INC·Filed 1983·Granted Jan 22, 1985·19 cites·13 claims
- 0570US4039356AGalling resistant austenitic stainless steelSCHUMACHER WILLIAM J·Filed 1975·Granted Aug 2, 1977·19 cites·4 claims
- 0650US4099967AGalling resistant austenitic stainless steelARMCO STEEL CORP·Filed 1976·Granted Jul 11, 1978·7 cites·2 claims
- 0749US4220689AGalling resistant austenitic stainless steel powder productARMCO INC·Filed 1979·Granted Sep 2, 1980·8 cites·4 claims
- 0849US4146412AGalling resistant austenitic stainless steelARMCO STEEL CORP·Filed 1978·Granted Mar 27, 1979·7 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when William J. Schumacher files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →