US3322840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing tertiary alkyl chlorides and olefins
Assignee: Dow Silicones Corp
•
Filing: 1962-09-28
•
Granted: 1967-05-30
•
Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Eldon E Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/16; C07C17/20; C07C17/202; C07C17/206; C07C17/25; C07C19/00; C07C19/08; C07C19/10; C07C21/00; C07C21/02; C07C21/18; C07C31/00; C07C31/34; C07C31/44; C07C403/00; C07C403/04; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE METHOD WHICH COMPRISES IN SEQUENCE, (A) REACTING A GRIGNARD REAGENT OF THE FORMULA
Claim 2
Independent Claim
14 words
THE METHOD WHICH COMPRISES IN SEQUENCE, (A) REACTING A GRIGNARD REAGENT OF THE FORMULA
References Cited (Backward Citations)
BE510970A
Cited
US2875253A
Cited
US2824897A
Cited
US2880247A
Cited
US2862977A
Cited
US3189656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |