Patent US2976295A successfully refreshed from Google Patents.
US2976295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
p-(3, 5-disubstituted and 3, 5, 5-trisubstituted-2-pyrazolin-1-yl) benzaldehydes
Assignee: GAF Chemicals Corp
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Filing: 1958-12-17
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Granted: 1961-03-21
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Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Plue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:23
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2891070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |