US3173906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyes
Assignee: Polaroid Corp
•
Filing: 1962-05-08
•
Granted: 1965-03-16
•
Expires: 1982-05-08
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:18
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN AZO DYE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
AN AZO DYE OF THE FORMULA:
References Cited (Backward Citations)
US2997390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |