US3534045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiopyrano(3,4-e)pyrans
Assignee: Warner Lambert Co LLC
•
Filing: 1967-05-08
•
Granted: 1970-10-13
•
Expires: 1987-05-08
Abstract
No abstract record available.
Inventors
- 👤 Max Von Strandtmann
- 👤 Marvin P Cohen
- 👤 John Shavel Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:58
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/12; C07D471/14; C07D493/00; C07D493/02; C07D493/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2951851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |