US3278549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble dyestuffs and process for preparing them
Assignee: Hoechst AG
•
Filing: 1964-10-26
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Granted: 1966-10-11
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Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Scherer Otto
- 👤 Uhl Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:49
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34; C09B43/00; C09B43/12; C09B43/124; C09B43/128; C09B5/00; C09B5/24; C09B5/34; C09B5/36; C09B5/62; C09B62/00; C09B62/44; C09B62/485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A WATER-SOLUBLE DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
6 words
A WATER-SOLUBLE DYESTUFF OF 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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |