US2776958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New water-soluble mordant azophthalocyanine dyestuffs and process for making same
Assignee: Durand and Huguenin AG
•
Filing: 1954-01-12
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Granted: 1957-01-08
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Expires: 1974-01-12
Abstract
No abstract record available.
Inventors
- 👤 Brentano Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A MEMBER SELECTED FROM THE CLASS CONSISTING OF WATER-SOLUBLE MORDANT AZO-PHTHALOCYANINE DYESTUFFS WHICH CORRESPOND TO THE FORMULA
Claim 2
Dependent Claim
17 words
A MEMBER SELECTED FROM THE CLASS CONSISTING OF WATER-SOLUBLE MORDANT AZO-PHTHALOCYANINE DYESTUFFS WHICH CORRESPOND TO 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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |