US3314935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyestuffs
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1964-01-03
•
Granted: 1967-04-18
•
Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Booth Gerald
- 👤 Douglas George Trapp
- 👤 Hunter James Stuart
- 👤 Johnson Eric Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/523; C09B62/527; C09B62/53; C09B39/00; C09B62/62; C09B62/66; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE MONOAZO DYESTUFFS OF THE FORMULA:
Claim 2
Dependent Claim
6 words
THE MONOAZO DYESTUFFS OF 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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |