US3536762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trisubstituted 4 - hydroxycyclopentane-1,3-diones and the process for the production thereof
Assignee: Brewing Patents Ltd
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Filing: 1966-11-17
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Granted: 1970-10-27
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Expires: 1986-11-17
Abstract
No abstract record available.
Inventors
- 👤 Phillip Roy Ashurst
- 👤 Derek Roy James Laws
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:27
CPC Classifications
C; C12; C12C; C12C5/00; C12C5/008; C07; C07C; C07C45/00; C07C45/26; C07C59/00; C07C59/40; C07C59/42; C12C3/00; C12C3/12
Claims Analysis
Total Claims: 0
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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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |