Patent US3265708A successfully refreshed from Google Patents.
US3265708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-parahydroxyphenylmaleimide
Assignee: Uniroyal Inc
•
Filing: 1964-04-01
•
Granted: 1966-08-09
•
Expires: 1984-04-01
Abstract
No abstract record available.
Inventors
- 👤 Charles H Stiteler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
SYMMETRICAL N-(4-HYDROXYPHENYL) MALEIMIDE HAVING A MELTING POINT OF 181*-182*C.
Claim 2
Dependent Claim
9 words
SYMMETRICAL N-(4-HYDROXYPHENYL) MALEIMIDE HAVING A MELTING POINT OF 181*-182*C.
References Cited (Backward Citations)
US3078276A
Cited
US3123618A
Cited
US1915334A
Cited
US2075359A
Cited
US2321493A
Cited
US2744882A
Cited
US2975193A
Cited
US3018290A
Cited
US3077478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |