US3337634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Allenic ketones and process for their preparation
Assignee: Eastman Kodak Co
•
Filing: 1963-05-07
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Granted: 1967-08-22
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Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Thompson Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:36
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0007; C11B9/0015; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C49/00; C07C49/20; C07C49/203; C07C49/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A PROCESS FOR PREPARING COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
8 words
A PROCESS FOR PREPARING COMPOUNDS HAVING THE FORMULA:
References Cited (Backward Citations)
US3029287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |