US3408407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel bisphenols of cyclohexadiene
Assignee: Union Carbide Corp
•
Filing: 1964-03-27
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Granted: 1968-10-29
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Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Robert J Cotter
- 👤 Francis N Apel
- 👤 Jr Louis B Conte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/04; C08G64/06; C07; C07C; C07C39/00; C07C39/12; C07C39/17; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08L; C08L75/00; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
CRYSTALLINE 1,4 - BIS(P-HYDROXYPHENYL)CYCLOHEXANE HAVING A MELTING POINT OF ABOUT 230-232*C.
Claim 2
Dependent Claim
11 words
CRYSTALLINE 1,4 - BIS(P-HYDROXYPHENYL)CYCLOHEXANE HAVING A MELTING POINT OF ABOUT 230-232*C.
References Cited (Backward Citations)
US2864868A
Cited
US3232994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |