Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6447683 | Pathogen destruction process for biosolids | Donald Michael Douglas Gubb, David Isaac Jenkins, John Matthew Hake, Carlos De Leon, David Robert Williams | 2002-09-10 |
| 4696746 | Two phase anaerobic digestion | David P. Chynoweth, Paul B. Tarman | 1987-09-29 |
| 4424064 | Methane production from and beneficiation of anaerobic digestion of aquatic plant material | Donald L. Klass | 1984-01-03 |
| 4396402 | Gas production by accelerated bioleaching of organic materials | — | 1983-08-02 |
| 4329428 | Methane production from and beneficiation of anaerobic digestion of plant material and organic waste | Donald L. Klass | 1982-05-11 |
| 4323367 | Gas production by accelerated in situ bioleaching of landfills | — | 1982-04-06 |
| 4318993 | Two phase anaerobic digester system | Donald L. Klass | 1982-03-09 |
| 4316961 | Methane production by anaerobic digestion of plant material and organic waste | Donald L. Klass | 1982-02-23 |
| 4314904 | Anaerobic digestion of waste and biomass by use of lactobacillus culture additives | Paul A. Fedde, Michael P. Henry, Donald L. Klass | 1982-02-09 |
| 4184547 | Situ mining of fossil fuel containing inorganic matrices | Donald L. Klass | 1980-01-22 |