Inventor
Dwight D. Collins
Inventor
Bakersfield, CA, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C05Bprimary
C05BPhosphatic fertilisers29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
B01DSeparation14%
C01BNon-metallic elements14%
C02FTreatment of water, waste water, sewage, or sludge14%
PatentTitleYear
4,231,780'Treatment of phosphate rock on soil in situ with sulfuric acid'19804,123,355'Simultaneous treatment of SO.sub.2 containing stack gases and waste water'19784,039,289'Sulphur-burning and gaseous products absorption system and components therefor'19773,979,199'Treatment of phosphate rock in soil to provide fertilizer and gypsum'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1980Patents assigned to CHEMSOIL CORP (3)· patent assignee history
1976–1980Based in Bakersfield, CA, US· patent location history
1977Based in Covina, CA, US· patent location history
1978Patents assigned to COLLINS DWIGHT D (1)· patent assignee history
1978Patents assigned to NASA (1)· patent assignee history
1978Patents assigned to PORADEK JERRY C (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHEMSOIL CORP | 3 | 1976–1980 |
| COLLINS DWIGHT Dself | 1 | 1978 |
| NASA | 1 | 1978 |
| PORADEK JERRY C | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bakersfield, California, US | 3 | 1976–1980 |
| Covina, California, US | 1 | 1977 |