Patent US2928854A successfully refreshed from Google Patents.
US2928854A
Expired / Lapsed
US
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Alkatrienoic acid compound
Assignee: Merck and Co Inc
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Filing: 1957-02-26
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Granted: 1960-03-15
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Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 William A Bolhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:42
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/42; C07C51/00; C07C51/347; C07C51/367
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3-HYDROXY-3,7,11-TRIMETHYL-4,6,10-DODECATRIENOIC ACID AND THE ALKALI METAL AND THE ALKALINE EARTH METAL SALTS THEREOF.
Claim 2
Dependent Claim
21 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3-HYDROXY-3,7,11-TRIMETHYL-4,6,10-DODECATRIENOIC ACID AND THE ALKALI METAL AND THE ALKALINE EARTH METAL SALTS THEREOF.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |