US2669575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkyl-alpha, alpha'-dicyano-2, 5-dialkoxy-p-benzenediacrylates
Assignee: GAF Chemicals Corp
•
Filing: 1951-09-04
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Granted: 1954-02-16
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Expires: 1971-09-04
Abstract
No abstract record available.
Inventors
- 👤 Nicholas W Solonen
- 👤 David I Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
DIALKYL- A,A''- DICYANO- 2,5- DIALKOXY- P- BENZENEDIACRYLATES CHARACTERIZED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
13 words
DIALKYL- A,A''- DICYANO- 2,5- DIALKOXY- P- BENZENEDIACRYLATES CHARACTERIZED BY THE FOLLOWING GENERAL FORMULA:
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |