US3316239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble organic dyestuffs
Assignee: BASF Schweiz AG
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Filing: 1963-10-24
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Granted: 1967-04-25
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Expires: 1983-10-24
Abstract
No abstract record available.
Inventors
- 👤 Riat Henri
- 👤 Seitz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:27
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/443
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A WATERSOLUBLE ORGANIC DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THE PHTHALOCYANINE, ANTHRAQUINONE, DISAZO AND MONOAZO DYESTUFFS, WHICH CONTAINS ONE TO FOUR SULFONIC ACID GROUPS AND WHICH HAS THE FORMULA
Claim 2
Dependent Claim
30 words
A WATERSOLUBLE ORGANIC DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THE PHTHALOCYANINE, ANTHRAQUINONE, DISAZO AND MONOAZO DYESTUFFS, WHICH CONTAINS ONE TO FOUR SULFONIC ACID GROUPS AND WHICH HAS 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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |