US3592798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polythioether addition products
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-04-11
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Granted: 1971-07-13
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Expires: 1986-04-11
Abstract
Abstract NOVEL TERMINAL DIFUNCTIONAL POLYTHIOETHER POLYADDUCTS USEFUL AS MASTIC COMPOSITIONS ARE PREPARED BY REACTING DITHIOLS WITH ACETYLENES UNDER FREE RADICAL CONDITIONS. DEPENDENT ON THE THIOL/ACETYLENE RATIO, THE NOVEL POLYMERS CONTAIN THIOL AND/OR VINYL SULFIDE END GROUPS.
Inventors
- 👤 Alexis A Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:21
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/04; C08G75/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |