US2835704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pantetheine intermediates
Assignee: Merck and Co Inc
•
Filing: 1955-03-21
•
Granted: 1958-05-20
•
Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Walton Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:31
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/45; C07C233/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2680767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |