US3096358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated 9, 9-di (carboxyalkyl) fluorene and esters and salts thereof
Assignee: Union Carbide Corp
•
Filing: 1961-03-20
•
Granted: 1963-07-02
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Christian F Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:49
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/57; C07C309/58; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A FLUORENE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A FLUORENE OF THE FORMULA:
References Cited (Backward Citations)
US2339373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |