Patent US3274173A successfully refreshed from Google Patents.
US3274173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoro, nitrobenzyl sulfonyl amide colorants
Assignee: Interchemical Corp
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Filing: 1963-10-31
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Granted: 1966-09-20
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph W Dehn
- 👤 Gancher Edward
- 👤 Harold J Kuhefuss
- 👤 Resnick Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:39
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A REACTIVE COLORANT HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
7 words
A REACTIVE COLORANT HAVING THE STRUCTURAL 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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |