Patent US3142669A successfully refreshed from Google Patents.
US3142669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyes
Assignee: Crompton and Knowles Corp
•
Filing: 1960-12-12
•
Granted: 1964-07-28
•
Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 James F Feeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:42
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B43/124; C09B43/136; C09B62/00; C09B62/002; C09B62/006; C09B62/008; C09B62/0085; C09B62/02; C09B62/04; C09B62/08; C09B62/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
THE COMPOUND:
Claim 2
Dependent Claim
2 words
THE COMPOUND:
References Cited (Backward Citations)
DE291963C
Cited
US1123430A
Cited
US1201544A
Cited
US1359969A
Cited
US1408405A
Cited
DE520239C
Cited
DE609117C
Cited
US2374157A
Cited
US2374158A
Cited
US2849437A
Cited
US2891941A
Cited
FR1228834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |