US2524136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of maleimide and n-substituted derivatives
Assignee: Uniroyal Inc
•
Filing: 1948-12-30
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Granted: 1950-10-03
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Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Erhard J Prill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:52
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07C; C07C51/00; C07C51/54; C07C51/56; C07C51/567; C07C61/00; C07C61/16; C07C61/22; C07C61/24; C07D209/00; C07D209/56; C07D209/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A METHOD OF MAKING MALEIMIDE AND N-SUBSTITUTED DERIVATIVES THEREOF WHICH COMPRISES THERMALLY DECOMPOSING A COMPOUND OF THE FORMULA
Claim 2
Independent Claim
18 words
A METHOD OF MAKING MALEIMIDE AND N-SUBSTITUTED DERIVATIVES THEREOF WHICH COMPRISES THERMALLY DECOMPOSING A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |