Patent US3412131A successfully refreshed from Google Patents.
US3412131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl carbonates of salicylic acid
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1966-08-02
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Granted: 1968-11-19
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Expires: 1986-08-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph V Swintosky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:55
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/96
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)
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |