US2601308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticoagulant, amide of 3, 3'-carboxy-methylene bis
Assignee: SPECIFIE PHARMACEUTICALS Inc
•
Filing: 1950-06-03
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Granted: 1952-06-24
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Expires: 1970-06-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Lovas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:53
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/42; C07D311/44; C07D311/46; C07D311/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AMIDES OF 3,3'' -CARBOXYMETHYLENEBIS (4-HYDROXYCOUMARIN) OF THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
10 words
AMIDES OF 3,3'' -CARBOXYMETHYLENEBIS (4-HYDROXYCOUMARIN) OF THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
GB580084A
Cited
US2482510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |