US2552241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
p-phenylenediamines containing alkylacylamidoethyl or alkylacylamidoethoxy ring substituents
Assignee: Eastman Kodak Co
•
Filing: 1949-03-18
•
Granted: 1951-05-08
•
Expires: 1969-03-18
Abstract
No abstract record available.
Inventors
- 👤 Weissberger Arnold
- 👤 Dudley B Glass
- 👤 Paul W Vittum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413; G03C7/4136
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
AN AMINO COMPOUND HAVING A FORMULA OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
11 words
AN AMINO COMPOUND HAVING A FORMULA OF THE CLASS CONSISTING OF
Claim 3
Dependent Claim
6 words
AN AMINO COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
6 words
AN AMINO COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2193015A
Cited
US2304953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |