Patent US2765341A successfully refreshed from Google Patents.
US2765341A
Expired / Lapsed
US
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Triaminodiphenyl ethers and sulfides
Assignee: EIDP Inc
•
Filing: 1955-08-26
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Granted: 1956-10-02
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Expires: 1975-08-26
Abstract
No abstract record available.
Inventors
- 👤 Walter V Wirth
- 👤 Krahler Stanley Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/775; C08G18/771
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
THE COMPOUNS
Claim 2
Dependent Claim
2 words
THE COMPOUNS
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |