Patent US3959200A successfully refreshed from Google Patents.
US2389231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting organic halides
Assignee: Phillips Petroleum Co
•
Filing: 1942-02-10
•
Granted: 1945-11-20
•
Expires: 1962-02-10
Abstract
No abstract record available.
Inventors
- 👤 Donald R Blumer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/12; C07C11/16; C07C11/167; C07C1/00; C07C1/26; C07C1/30; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C2521/00; C07C2521/16
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) | 1948-11-19 | 1949-05-21 | 1949-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-11-19 | 1953-05-21 | 1953-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-11-19 | 1957-05-21 | 1957-11-20 | $7700.00 | Window Closed / Lapsed |