Patent US2761876A successfully refreshed from Google Patents.
US2761876A
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Hydrazinosulfonylphenylamidopropanediols and preparation
Assignee: EIDP Inc
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Filing: 1953-12-23
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Granted: 1956-09-04
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Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Walter A Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:51
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; C; C11; C11B; C11B5/00; C11B5/0071; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065; C25; C25D; C25D3/00; C25D3/02; C25D3/26; C25D3/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2680135A
Cited
US2680120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |