Patent US3330867A successfully refreshed from Google Patents.
US3330867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefinic ketones and process for the manufacture thereof
Assignee: F Hoffmann La Roche AG
•
Filing: 1963-06-21
•
Granted: 1967-07-11
•
Expires: 1983-06-21
Abstract
No abstract record available.
Inventors
- 👤 Saucy Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:53
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A PROCESS FOR THE PREPARATION OF AN OLEFINIC KETONE COMPRISING TREATING AN ALLENE-KETONE OF THE FORMULA
Claim 2
Dependent Claim
16 words
A PROCESS FOR THE PREPARATION OF AN OLEFINIC KETONE COMPRISING TREATING AN ALLENE-KETONE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |