Patent US3234207A successfully refreshed from Google Patents.
US3234207A
Expired / Lapsed
US
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Water-soluble yellow monoazo-dyestuffs and process for preparing them
Assignee: Hoechst AG
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Filing: 1963-05-24
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Granted: 1966-02-08
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Berner Klaus
- 👤 Siebert Arthur
- 👤 Sommer Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:27
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/02; D06P1/04; D06P1/06; C; C09; C09B; C09B29/00; C09B29/0025; C09B29/0029; C09B29/0037; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE WATER-SOLUBLE MONOAZO-DYESTUFFS HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
THE WATER-SOLUBLE MONOAZO-DYESTUFFS HAVING THE 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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |