Patent US2959582A successfully refreshed from Google Patents.
US2959582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azodyestuffs soluble in water
Assignee: Hoechst AG
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Filing: 1958-07-22
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Granted: 1960-11-08
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Expires: 1978-07-22
Abstract
No abstract record available.
Inventors
- 👤 Schimmelschmidt Kurt
- 👤 Kappenberger Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:26
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/40; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C09; C09B; C09B69/00; D06P1/00; D06P1/0048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE AZO-DYESTUFF SOLUBLE IN WATER WHICH CORRESPONDS TO THE FOLLOWING FORMULA
Claim 2
Dependent Claim
11 words
THE AZO-DYESTUFF SOLUBLE IN WATER WHICH CORRESPONDS TO THE FOLLOWING FORMULA
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |