US3234280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triphenylamine compounds and preparation thereof
Assignee: Eastman Kodak Co
•
Filing: 1961-12-29
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Granted: 1966-02-08
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Fox
- 👤 Arthur L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:14
CPC Classifications
C; C08; C08G; C08G67/00; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0618; G03G5/07; G03G5/075; G03G5/076; G03G5/0763; G03G5/0764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2290860A
Cited
US2572967A
Cited
US2558285A
Cited
US2530769A
Cited
US3041165A
Cited
US3066023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |