Inventor
Charles R. Kirby
Inventor
Rossland, CA
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Bprimary
C22BProduction and refining of metals23%
Y02PClimate change mitigation technologies in the production or processing of goods23%
A22CProcessing meat, poultry, or fish8%
B01DSeparation8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%
C01BNon-metallic elements8%
C01GCompounds containing metals not covered by subclasses c01d or c01f8%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds8%
LOC228%
PatentTitleYear
D0501910'Double fishing pole holder with carrying handle'20055,411,434'Poultry shoulder and breast severing machine'19954,286,966'Process for the melting of sulfur'19814,193,970'Process for the precipitation of iron as jarosite'19804,049,770'Recovery of copper and zinc as sulfides from copper-iron sulfides'19773,964,901'Production of copper and sulfur from copper-iron sulfides'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1980Patents assigned to SHERRITT GORDON MINES LTD (3)· patent assignee history
1976–1981Based in Rossland, CA· patent location history
1980–1981Patents assigned to COMINCO LTD (2)· patent assignee history
1995Patents assigned to KAYS ENGINEERING (1)· patent assignee history
1995Based in Sweet Springs, MO, US· patent location history
2005Based in Coolidge, AZ, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHERRITT GORDON MINES LTD | 3 | 1976–1980 |
| COMINCO LTD | 2 | 1980–1981 |
| KAYS ENGINEERING | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rossland, CA | 4 | 1976–1981 |
| Coolidge, AZ, US | 1 | 2005 |
| Sweet Springs, MO, US | 1 | 1995 |