US3097198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyestuffs
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1960-01-29
•
Granted: 1963-07-09
•
Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Fishwick Brian Ribbons
- 👤 Wardleworth James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:42
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0025; C09B29/06; C09B29/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
WATER-INSOLUBLE AZO DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
6 words
WATER-INSOLUBLE AZO DYESTUFFS OF THE FORMULA:
References Cited (Backward Citations)
US2373700A
Cited
US2830043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |