Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4993647 | Two stage separator apparatus | — | 1991-02-19 |
| 4970971 | System of and apparatus for sanitizing waste material | — | 1990-11-20 |
| 4938155 | Fluidized bed combustion apparatus for generating environmentally-innocent ash | — | 1990-07-03 |
| 4686095 | Method of making ultrapure silicon nitride precursor | Elaine C. Beckwith | 1987-08-11 |
| D288840 | Debris separator downspout | — | 1987-03-17 |
| 4640826 | Method of making yttrium silicon oxy compound | Elaine C. Beckwith | 1987-02-03 |
| 4493383 | Well clean out tool | Bob Davis | 1985-01-15 |
| 4472274 | Debris separator for downspouts | — | 1984-09-18 |
| 4385732 | Waste material breaking and shredding apparatus | — | 1983-05-31 |
| 4337900 | Method of recovery of aluminum from waste material | Lucian C. Bielicki | 1982-07-06 |
| 4288038 | Waste material processing apparatus | — | 1981-09-08 |
| 4281717 | Expolosion suppression system for fire or expolosion susceptible enclosures | — | 1981-08-04 |
| 4267889 | Explosion suppression system for fire or explosion susceptible enclosure | — | 1981-05-19 |
| 4245570 | Sewage sludge disposal apparatus and method of disposal | — | 1981-01-20 |
| 4184640 | Coal grinding apparatus for direct fired burners | — | 1980-01-22 |