US2865930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethers and thioethers of kojic acid and preparation thereof
Assignee: Rhone Poulenc SA
•
Filing: 1955-12-19
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Granted: 1958-12-23
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Metivier Jean
- 👤 Boesch Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:59
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/69; C07D213/63; C07D213/68; C07D309/00; C07D309/34; C07D309/36; C07D309/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A COMPOUND OF THE GENERAL 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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |