US3340233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-vinylketo aromatic compounds and polymerization products thereof
Assignee: Dow Chemical Co
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Filing: 1963-07-22
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Granted: 1967-09-05
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/527; C07C49/557; C07C323/00; C07C45/00; C07C45/45; C07C45/46; C07C45/61; C07C45/65; C07C49/76; C07C49/794; C07C49/796; C07C49/80; C07C49/813; C07C49/84; C08; C08F; C08F16/00; C08F16/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A BIS-VINYLKETO COMPOUND HAVING A FORMULA SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Dependent Claim
12 words
A BIS-VINYLKETO COMPOUND HAVING A FORMULA SELECTED FROM THE CLASS CONSISTING OF
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |