Patent US3349130A successfully refreshed from Google Patents.
US3349130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel process for the preparation of 2-alkyl-cyclopentane-1, 3-diones
Assignee: Sanofi Aventis France
•
Filing: 1964-04-22
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Granted: 1967-10-24
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Bucourt Robert
- 👤 Pierdet Andre
- 👤 Costerousse Germain
- 👤 Joly Robert
- 👤 Warnant Julien
- 👤 Goffinet Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:59
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARTION OF 2-LOWER ALKYL-CYCLOPENTANE-1,3-DIONES OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARTION OF 2-LOWER ALKYL-CYCLOPENTANE-1,3-DIONES OF THE FORMULA
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |