Inventor · disambiguated record
Donald L. Stewart, Jr.
Also filed as: STEWART DONALD · STEWART DONALD L · STEWART JR DONALD L
11 granted patents·134 citations·filing 1981–2013
91Inventor score
Top patents by PatentIndex Score
11 records- 0184US7556766B2Controlled free vortex scrap ingester and molten metal pumpALCOA INC·Filed 2006·Granted Jul 7, 2009·5 cites·17 claims
- 0280US4761207AContinuous salt-based melting processALUMINUM CO OF AMERICA·Filed 1987·Granted Aug 2, 1988·27 cites·16 claims
- 0369US4385964AMethod for preventing the undesirable condensation of aluminum chloride in a fractional distillation columnALUMINUM CO OF AMERICA·Filed 1982·Granted May 31, 1983·14 cites·18 claims
- 0468US6347545B1Closure pressure testing apparatus and method for testing closuresALCOA CLOSURE SYSTEMS INT INC·Filed 2000·Granted Feb 19, 2002·15 cites·23 claims
- 0566US5057194ASalt-based melting processALUMINUM CO OF AMERICA·Filed 1988·Granted Oct 15, 1991·14 cites·17 claims
- 0666US4758316AAluminum-lithium scrap recoveryALUMINUM CO OF AMERICA·Filed 1987·Granted Jul 19, 1988·15 cites·20 claims
- 0755US5227143AProcess for the removal of salts from aluminum drossALUMINUM CO OF AMERICA·Filed 1991·Granted Jul 13, 1993·9 cites·20 claims
- 0855US5198200AProcess for the recovery of values from secondary aluminum drossALUMINUM CO OF AMERICA·Filed 1991·Granted Mar 30, 1993·12 cites·10 claims
- 0955US4349420AFractional distillation process for the production of aluminum chlorideALUMINUM CO OF AMERICA·Filed 1981·Granted Sep 14, 1982·8 cites·11 claims
- 1050US8917754B2Aluminum melting apparatusALCOA INC·Filed 2013·Granted Dec 23, 2014·0 cites·16 claims
- 1147US4490049AMixing arrangementCRON CHEMICAL CORP·Filed 1983·Granted Dec 25, 1984·15 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Donald L. Stewart, Jr. 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 →