Patent US6339536B1 successfully refreshed from Google Patents.
US3564025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-methoxy-6-multiprenyl-1,4-benzoquinones and a process of making
Assignee: Merck and Co Inc
•
Filing: 1966-06-28
•
Granted: 1971-02-16
•
Expires: 1986-06-28
Abstract
Abstract 2-METHOXY-6-MULTIPRENYL-1,4-BENZOQUINONES ARE PREPARED BY REACTING A 2-METHOXY-6-MULTIPRENYLPHENOL WITH POTASSIUM NITRODISULFONATE. THE PRODUCTS ARE USEFUL AS INTERMEDIATES IN THE MICROBIOLOGICAL SYNTHESIS OF COENZYME Q COMPOUNDS.
Inventors
- 👤 Karl Folkers
- 👤 Glenn Doyle Daves Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:08
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/66; C07; C07C; C07C46/00; C07C46/02; C07C46/06; C07C50/00; C07C50/26; C07C50/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |