US2860128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triazine disazo-dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1957-07-01
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Granted: 1958-11-11
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Gunst Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:17
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A WATER SOLUBLE DISAZO DYESTUFF WHICH IN ITS FREE ACID STATE CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
15 words
A WATER SOLUBLE DISAZO DYESTUFF WHICH IN ITS FREE ACID STATE CORRESPONDS 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) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |