Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4840346 | Apparatus for sealing a well blowout | Dewa N. Adnyana | 1989-06-20 | $191,000 |
| 4619320 | Subsurface well safety valve and control system | Dewa N. Adnyana | 1986-10-28 | $820,000 |
| 4515213 | Packing tool apparatus for sealing well bores | Dewa N. Adnyana | 1985-05-07 | $263,000 |
| 4472113 | Pumping by martensitic transformation utilization | — | 1984-09-18 |