US3245947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic resin compositions containing bis-(aminophenyl)-sulfones
Assignee: Union Carbide Corp
•
Filing: 1961-06-13
•
Granted: 1966-04-12
•
Expires: 1981-06-13
Abstract
No abstract record available.
Inventors
- 👤 Norman D Hanson
- 👤 Sidney J Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08L; C08L61/00; C08L81/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A THERMOSETTING COMPOSITION COMPRISING A THERMOSETTING PRECONDENSATE OF A PHENOL AND AN ALDEHYDE, SAID PRECONDENSATE BEING FREE OF SULFUR ATOMS; AND BIS-(AMINOPHENYL)-SULFONE OF THE FORMULA:
Claim 2
Dependent Claim
25 words
A THERMOSETTING COMPOSITION COMPRISING A THERMOSETTING PRECONDENSATE OF A PHENOL AND AN ALDEHYDE, SAID PRECONDENSATE BEING FREE OF SULFUR ATOMS; AND BIS-(AMINOPHENYL)-SULFONE OF THE FORMULA:
References Cited (Backward Citations)
US1954377A
Cited
US2745816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |