Sowman; Harold G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sowman; Harold G..The latest application filed is for "microcrystalline alumina-based ceramic articles".
- Sowman; Harold G. - Stillwater MN
- Sowman; Harold G. - St. Paul MN
- Sowman; Harold G. - Maplewood MN
| Patent | Date |
|---|---|
| Microcrystalline alumina-based ceramic articles Grant 5,185,299 - Wood , et al. * February 9, 1 | 1993-02-09 |
| Sol gel-derived ceramic bubbles Grant 5,077,241 - Moh , et al. December 31, 1 | 1991-12-31 |
| Refractory fibers of alumina and organic residue Grant 4,929,578 - Sowman May 29, 1 | 1990-05-29 |
| Ceramic articles containing silicon carbide Grant 4,883,779 - McAllister , et al. November 28, 1 | 1989-11-28 |
| Silica coating Grant 4,816,333 - Lange , et al. March 28, 1 | 1989-03-28 |
| Internally modified ceramic fiber Grant 4,797,378 - Sowman January 10, 1 | 1989-01-10 |
| Microcrystalline transition metal oxide spinel articles Grant 4,757,036 - Kaar , et al. July 12, 1 | 1988-07-12 |
| Graded refractory cermet article Grant 4,713,300 - Sowman , et al. December 15, 1 | 1987-12-15 |
| Articles containing non-fused aluminum oxide-based abrasive mineral Grant 4,518,397 - Leitheiser , et al. May 21, 1 | 1985-05-21 |
| Non-vitreous ceramic metal oxide microcapsules and process for making same Grant 4,349,456 - Sowman September 14, 1 | 1982-09-14 |
| Non-fused aluminum oxide-based abrasive mineral Grant 4,314,827 - Leitheiser , et al. February 9, 1 | 1982-02-09 |
| Shaped and fired articles of TiO.sub.2 Grant 4,166,147 - Lange , et al. August 28, 1 | 1979-08-28 |
| Alumina-chromia-metal (IV) oxide refractory fibers having a microcrystalline phase Grant 4,125,406 - Sowman November 14, 1 | 1978-11-14 |
| Ultraviolet absorbing coatings Grant 4,089,996 - Lange , et al. May 16, 1 | 1978-05-16 |
| Non-frangible alumina-silica fibers Grant 4,047,965 - Karst , et al. September 13, 1 | 1977-09-13 |
| Spheroidal composite particle and method of making Grant 3,916,584 - Howard , et al. November 4, 1 | 1975-11-04 |
| Refractory Fibers Of Zirconia And Silica Mixtures Grant 3,793,041 - Sowman February 19, 1 | 1974-02-19 |
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