US2573015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic esters of 1-aryl-cyclopentene-(3)-1-carboxylic acids
Assignee: Novartis AG
•
Filing: 1948-11-04
•
Granted: 1951-10-30
•
Expires: 1968-11-04
Abstract
No abstract record available.
Inventors
- 👤 Hafliger Franz
- 👤 Denss Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
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US2387447A
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US2425723A
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US2447361A
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US2496064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |