US2745836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary-aminoalkyl-alpha, alpha-diaryl-succinimides and process for the preparation thereof
Assignee: STWB Inc
•
Filing: 1952-09-20
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Granted: 1956-05-15
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Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
- 👤 Chester M Suter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/408
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A TERTIARY-AMINOALKYL-A,A-DIARYLSUCCINIMIDE HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A TERTIARY-AMINOALKYL-A,A-DIARYLSUCCINIMIDE HAVING 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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |