US2799671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1955-07-21
•
Granted: 1957-07-16
•
Expires: 1975-07-21
Abstract
No abstract record available.
Inventors
- 👤 Gunst Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:36
CPC Classifications
C; C09; C09B; C09B56/00; C09B56/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A MONOAZO DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
6 words
A MONOAZO DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
US2385862A
Cited
US2467262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |