Inventor · disambiguated record
Harold G. Sowman
Also filed as: SOWMAN HAROLD G
22 granted patents·2,846 citations·filing 1966–1990
97Inventor score
Top patents by PatentIndex Score
22 records- 0199US5185299AMicrocrystalline alumina-based ceramic articlesMINNESOTA MINING & MFG·Filed 1990·Granted Feb 9, 1993·340 cites·20 claims
- 0299US4349456ANon-vitreous ceramic metal oxide microcapsules and process for making sameMINNESOTA MINING & MFG·Filed 1979·Granted Sep 14, 1982·208 cites·29 claims
- 0398US4166147AShaped and fired articles of tio2MINNESOTA MINING & MFG·Filed 1973·Granted Aug 28, 1979·151 cites·28 claims
- 0497US5077241ASol gel-derived ceramic bubblesMINNESOTA MINING & MFG·Filed 1988·Granted Dec 31, 1991·116 cites·26 claims
- 0597US4047965ANon-frangible alumina-silica fibersMINNESOTA MINING & MFG·Filed 1976·Granted Sep 13, 1977·213 cites·23 claims
- 0696US4518397AArticles containing non-fused aluminum oxide-based abrasive mineralMINNESOTA MINING & MFG·Filed 1983·Granted May 21, 1985·267 cites·18 claims
- 0796US4314827ANon-fused aluminum oxide-based abrasive mineralMINNESOTA MINING & MFG·Filed 1980·Granted Feb 9, 1982·917 cites·22 claims
- 0895US4797378AInternally modified ceramic fiberMINNESOTA MINING & MFG·Filed 1986·Granted Jan 10, 1989·86 cites·14 claims
- 0992US4816333ASilica coatingMINNESOTA MINING & MFG·Filed 1986·Granted Mar 28, 1989·133 cites·28 claims
- 1091US5017316AInternally modified ceramic fiberMINNESOTA MINING & MFG·Filed 1988·Granted May 21, 1991·51 cites·22 claims
- 1191US4757036AMicrocrystalline transition metal oxide spinel articlesMINNESOTA MINING & MFG·Filed 1987·Granted Jul 12, 1988·89 cites·17 claims
- 1289US4743511AGraded refractory cermet articleMINNESOTA MINING & MFG·Filed 1987·Granted May 10, 1988·59 cites·11 claims
- 1389US4713300AGraded refractory cermet articleMINNESOTA MINING & MFG·Filed 1985·Granted Dec 15, 1987·59 cites·19 claims
- 1486US4883779ACeramic articles containing silicon carbideMINNESOTA MINING & MFG·Filed 1988·Granted Nov 28, 1989·43 cites·14 claims
- 1585US4125406AAlumina-chromia-metal (IV) oxide refractory fibers having a microcrystalline phaseMINNESOTA MINING & MFG·Filed 1974·Granted Nov 14, 1978·34 cites·14 claims
- 1678US4800180ACeramic articles containing silicon carbideMINNESOTA MINING & MFG·Filed 1986·Granted Jan 24, 1989·42 cites·14 claims
- 1753US4089996AUltraviolet absorbing coatingsMINNESOTA MINING & MFG·Filed 1977·Granted May 16, 1978·8 cites·1 claims
- 1852US4012474AMethod for producing boron carbide spherulesGEN ATOMIC CO·Filed 1966·Granted Mar 15, 1977·6 cites·4 claims
- 1948US4929578ARefractory fibers of alumina and organic residueMINNESOTA MINING & MFG·Filed 1988·Granted May 29, 1990·9 cites·12 claims
- 2044US4801562ARefractory fibers of alumina and amorphous phosphorus pentoxideMINNESOTA MINING & MFG·Filed 1987·Granted Jan 31, 1989·8 cites·23 claims
- 2140US4022660ACoated particlesGEN ATOMIC CO·Filed 1974·Granted May 10, 1977·5 cites·8 claims
- 2234US4112186AUltraviolet absorbing coatingsMINNESOTA MINING & MFG·Filed 1977·Granted Sep 5, 1978·2 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →