US3236860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble phthalocyanine dyestuffs containing thiosulfuric acid groups
Assignee: Hoechst AG
•
Filing: 1960-04-18
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Granted: 1966-02-22
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Expires: 1980-04-18
Abstract
No abstract record available.
Inventors
- 👤 Schultheis Werner
- 👤 Schimmelschmidt Kurt
- 👤 Hoffmann Hermann
- 👤 Baier Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:06
CPC Classifications
C; C09; C09B; C09B69/00; C09B11/00; C09B11/04; C09B11/10; C09B11/22; C09B19/00; C09B19/02; C09B47/00; C09B47/04; C09B47/28; C09B62/00; C09B62/44; C09B62/503; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/042
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
THE DYESTUFF OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
6 words
THE DYESTUFF OF THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
8 words
THE WATER-SOLUBLE ORGANIC PHTHALOCYANINE DYESTUFF OF THE FORMULA
Claim 4
Dependent Claim
8 words
THE WATER-SOLUBLE ORGANIC PHTHALOCYANINE 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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |