US3261826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo triazine containing dyestuffs
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1963-05-13
•
Granted: 1966-07-19
•
Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Andrew Herbert Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:53
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
MONOAZO DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
5 words
MONOAZO DYESTUFFS OF THE FORMULA:
References Cited (Backward Citations)
US2910464A
Cited
US2945021A
Cited
US2951070A
Cited
US2931794A
Cited
US2943084A
Cited
GB859990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |