US3928340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-{8 (Substituted amino) thio{9 -imides
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1974-03-07
•
Granted: 1975-12-23
•
Expires: 1994-03-07
Abstract
Abstract Imides such as N-(morpholinothio)phthalimide are used to affect the vulcanization characteristics of sulfur vulcanizable polymers by increasing the state of vulcanization and/or improving scorch resistance and/or increasing the rate of vulcanization.
Inventors
- 👤 John P Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:33
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/44
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
7 words
AN IMIDE HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 2
Dependent Claim
7 words
AN IMIDE HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 3
Dependent Claim
22 words
The imide according to claim 1 wherein the imide is selected from the group consisting of N-(morpholinothio)-phthalimide, N-(piperidinothio)-phthalimide and N-(morpholinothio)-cis- Delta 4-tetrahydrophthalimide.
References Cited (Backward Citations)
US2902402A
Cited
US3071592A
Cited
US3178447A
Cited
US3410842A
Cited
US3525737A
Cited
US3546185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |