US2776957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble mordant azophthalocyanine dyestuffs and process for making them
Assignee: Durand and Huguenin AG
•
Filing: 1953-07-27
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Granted: 1957-01-08
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Brentano Willy
- 👤 Grossmann Hans
- 👤 Muller Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:37
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/24; C09B47/26; C09B43/00; C09B43/12; C09B43/124; C09B43/1247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR THE MANUFACTURE OF WATER-SOLUBLE MORDANT AZO-PHTHALOCYANINE DYESTUFFS COMPRISING THE STEP OF CONDENSING ONE MOLECULAR PROPORTION OF A PHTHALO CYANINE SULPHOCHLORIDE OF THE GENRAL FORMULA
Claim 2
Dependent Claim
27 words
A PROCESS FOR THE MANUFACTURE OF WATER-SOLUBLE MORDANT AZO-PHTHALOCYANINE DYESTUFFS COMPRISING THE STEP OF CONDENSING ONE MOLECULAR PROPORTION OF A PHTHALO CYANINE SULPHOCHLORIDE OF THE GENRAL FORMULA
References Cited (Backward Citations)
US2187716A
Cited
US2414374A
Cited
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 |