Patent US2919294A successfully refreshed from Google Patents.
US2919294A
Expired / Lapsed
US
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Dihydroxy diaryl alkenes
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-12-16
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Granted: 1959-12-29
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 David J Beaver
- 👤 Richard O Zerbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:41
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/20; C07C39/00; C07C39/205; C07C39/21; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AS A COMPOSITION OF MATTER A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
10 words
AS A COMPOSITION OF MATTER A COMPOUND OF THE STRUCTURE
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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |