Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4947174 | Vehicle shield | Theodore H. Lehman | 1990-08-07 | $14,331,000 |
| 4484934 | Physical solvent for gas sweetening | Charles R. Ferrin | 1984-11-27 | $5,647,000 |
| 4360363 | Physical solvent for gas sweetening | Charles R. Ferrin | 1982-11-23 | $2,787,000 |
| 4276271 | Process for the removal of hydrogen sulfide from gas mixtures | Stephen Joseph Rehm, Jeffrey L. Schmuhl | 1981-06-30 | $8,883,000 |
| 4184837 | Combustion control system | — | 1980-01-22 | $4,922,000 |