Inventor
SOWMAN HAROLD G
US22 patents
⚠️ This page may combine multiple inventors who share the name “SOWMAN HAROLD G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
20 patentsUS5185299AFeb 9, 1993
Microcrystalline alumina-based ceramic articles
MINNESOTA MINING & MFG340 citations99
US4349456ASep 14, 1982
Non-vitreous ceramic metal oxide microcapsules and process for making same
MINNESOTA MINING & MFG208 citations99
US4166147AAug 28, 1979
Shaped and fired articles of tio2
MINNESOTA MINING & MFG151 citations97
US4047965ASep 13, 1977
Non-frangible alumina-silica fibers
MINNESOTA MINING & MFG213 citations97
US5077241ADec 31, 1991
Sol gel-derived ceramic bubbles
MINNESOTA MINING & MFG116 citations96
US4797378AJan 10, 1989
Internally modified ceramic fiber
MINNESOTA MINING & MFG86 citations96
US4518397AMay 21, 1985
Articles containing non-fused aluminum oxide-based abrasive mineral
MINNESOTA MINING & MFG267 citations96
US4314827AFeb 9, 1982
Non-fused aluminum oxide-based abrasive mineral
MINNESOTA MINING & MFG917 citations96
US4816333AMar 28, 1989
Silica coating
MINNESOTA MINING & MFG133 citations94
US4757036AJul 12, 1988
Microcrystalline transition metal oxide spinel articles
MINNESOTA MINING & MFG89 citations94
US4743511AMay 10, 1988
Graded refractory cermet article
MINNESOTA MINING & MFG59 citations94
US4713300ADec 15, 1987
Graded refractory cermet article
MINNESOTA MINING & MFG59 citations94
US5017316AMay 21, 1991
Internally modified ceramic fiber
MINNESOTA MINING & MFG51 citations92
US4125406ANov 14, 1978
Alumina-chromia-metal (IV) oxide refractory fibers having a microcrystalline phase
MINNESOTA MINING & MFG34 citations92
US4883779ANov 28, 1989
Ceramic articles containing silicon carbide
MINNESOTA MINING & MFG43 citations91
US4800180AJan 24, 1989
Ceramic articles containing silicon carbide
MINNESOTA MINING & MFG42 citations91
US4929578AMay 29, 1990
Refractory fibers of alumina and organic residue
MINNESOTA MINING & MFG9 citations74
US4089996AMay 16, 1978
Ultraviolet absorbing coatings
MINNESOTA MINING & MFG8 citations74
US4801562AJan 31, 1989
Refractory fibers of alumina and amorphous phosphorus pentoxide
MINNESOTA MINING & MFG8 citations72
US4112186ASep 5, 1978
Ultraviolet absorbing coatings
MINNESOTA MINING & MFG2 citations63