US2797213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rosin derivatives of diazonaphthol-and diazophenol-sulfonamides
Assignee: GAF Chemicals Corp
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Filing: 1954-08-20
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Granted: 1957-06-25
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Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 Ralph G D Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:17
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03C; G03C1/00; G03C1/72; C; C07; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
AROMATIC DIAZOOXIDE SULFONAMIDES SELECTED FROM THE CLASS CONSISTING OF THOSE HAVING THE FOLLOWING FORMULAE:
Claim 2
Dependent Claim
14 words
AROMATIC DIAZOOXIDE SULFONAMIDES SELECTED FROM THE CLASS CONSISTING OF THOSE HAVING THE FOLLOWING FORMULAE:
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |