Patents per Year
Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6194473 | Chemical dispersant for oil spills (LAW898) | Richard R. Lessard, Kenneth W. Becker, Gerard P. Canevari, Anita George-Ares | 2001-02-27 | $570,670,000 |
| 5728320 | Chemical dispersant for oil spills | Kenneth W. Becker, Gerard P. Canevari, Richard R. Lessard | 1998-03-17 | $189,116,000 |
| 5618468 | Chemical dispersant for oil spills | Gerard P. Canevari, Kenneth W. Becker, Richard R. Lessard | 1997-04-08 | $133,295,000 |
| 4748006 | Extractor apparatus | — | 1988-05-31 | $201,173,000 |
| 4634578 | High capacity reciprocating plate extractor | — | 1987-01-06 | $13,961,000 |
| 4619709 | Chemical treatment for improved pipe line flushing | — | 1986-10-28 | $33,891,000 |
| 4588563 | Cascade sieve tray for extraction and deasphalting | — | 1986-05-13 | $46,410,000 |
| 4528068 | Tray apparatus for deasphalting and extraction | Edward Niessen | 1985-07-09 | $20,994,000 |
| 4519901 | Extractive separation process | — | 1985-05-28 | $27,876,000 |
| 4511537 | Extraction zone | James D. Bushnell | 1985-04-16 | $44,664,000 |