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US2820051A
Expired / Lapsed
US
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Mono-cyanoethylated 2-nitroaniline
Assignee: GAF Chemicals Corp
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Filing: 1956-04-10
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Granted: 1958-01-14
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Expires: 1976-04-10
Abstract
No abstract record available.
Inventors
- 👤 Saul R Buc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:36
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26
Claims Analysis
Total Claims: 0
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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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |