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Patent applications and USPTO patent grants for Clark; Harold A..The latest application filed is for "process for etching sio.sub.2 layers to silicon in a moderate vacuum gas plasma".
Patent | Date |
---|---|
Process for etching SiO.sub.2 layers to silicon in a moderate vacuum gas plasma Grant 4,180,432 - Clark December 25, 1 | 1979-12-25 |
Pigment-free coating compositions Grant 4,027,073 - Clark May 31, 1 | 1977-05-31 |
Pigment-free coating compositions Grant 3,986,997 - Clark October 19, 1 | 1976-10-19 |
Paint compositions Grant 3,976,497 - Clark August 24, 1 | 1976-08-24 |
Lubricant compositions Grant 3,909,424 - Clark September 30, 1 | 1975-09-30 |
Foundry mold and core compositions Grant 3,898,090 - Clark August 5, 1 | 1975-08-05 |
Method Of Constructing A Solar Energy Collector Grant 3,866,285 - Clark February 18, 1 | 1975-02-18 |
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