US2275312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of nuclear alkylation in the presence of hydrofluoric acid
Assignee: EIDP Inc
•
Filing: 1938-06-29
•
Granted: 1942-03-03
•
Expires: 1958-06-29
Abstract
No abstract record available.
Inventors
- 👤 John M Tinker
- 👤 Weinmayr Viktor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/22; C07C17/00; C07C17/26; C07C17/32; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2/86; C07C2/862; C07C2/864; C07C2/865; C07C201/00; C07C201/06; C07C201/12; C07C37/00; C07C37/11; C07C37/14; C07C37/16; C07C51/00; C07C51/347; C07C51/353; C07C57/00; C07C57/30; C07C57/38; C07C57/40; C07C63/00; C07C63/04; C07C65/00; C07C65/01; C07C65/105; C07C65/11; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2601/00; C07C2601/12; C07C2601/14
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) | 1945-03-02 | 1945-09-01 | 1946-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-02 | 1949-09-01 | 1950-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-02 | 1953-09-01 | 1954-03-03 | $7700.00 | Window Closed / Lapsed |