Inventor · disambiguated record
Donald J. Schwalm
Also filed as: SCHWALM DONALD J
3 granted patents·32 citations·filing 1977–1983
70Inventor score
Files withHOLCROFT & CO3
Top patents by PatentIndex Score
3 records- 0163US4093195ACarburizing furnaceHOLCROFT & CO·Filed 1977·Granted Jun 6, 1978·12 cites·16 claims
- 0261US4445945AMethod of controlling furnace atmospheresHOLCROFT & CO·Filed 1983·Granted May 1, 1984·12 cites·11 claims
- 0355US4174097AFurnace for bright annealing of copperHOLCROFT & CO·Filed 1977·Granted Nov 13, 1979·8 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →