Patent US3755474A successfully refreshed from Google Patents.
US3755474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of halocarbon compounds
Assignee: Phillips Petroleum Co
•
Filing: 1970-07-29
•
Granted: 1973-08-28
•
Expires: 1990-07-29
Abstract
Abstract PERHALOETHANE COMPOUNDS IN THE PRESENCE OF ELEMENTAL BROMINE OR CHLORINE AND ALKALI METAL OR ALKALINE EARTH METAL CATALYSTS ARE CONVERTED TO HALOCARBON COMPOUNDS HAVING A CHEMICAL COMPOSITION DIFFERENT FROM THE FEEDSTOCK MATERIAL.
Inventors
- 👤 G Bjornson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:10
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/204; C07C17/208
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |