US2772254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermo-setting resin
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-01-30
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Granted: 1956-11-27
•
Expires: 1973-01-30
Abstract
No abstract record available.
Inventors
- 👤 Anthony H Gleason
- 👤 Joseph F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:56
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR PREPARING A SOLID RESIN FROM A SODIUM COPOLYMER OF 100 TO 50% BUTADIENE 1 3 AND 0 TO 50% OF STYRENE WHICH CONSISTS IN HEATING THE COPOLYMER AT A TEMPERATURE BETWEEN 110* C. AND 175* C. IN THE PRESENCE OF 2.0 TO 4.0 OF DITERTIARY BUTYL PEROXIDE UNTIL A SOLID RESIN IS OBTAINED.
Claim 2
Dependent Claim
56 words
A PROCESS FOR PREPARING A SOLID RESIN FROM A SODIUM COPOLYMER OF 100 TO 50% BUTADIENE 1 3 AND 0 TO 50% OF STYRENE WHICH CONSISTS IN HEATING THE COPOLYMER AT A TEMPERATURE BETWEEN 110* C. AND 175* C. IN THE PRESENCE OF 2.0 TO 4.0 OF DITERTIARY BUTYL PEROXIDE UNTIL A SOLID RESIN IS OBTAINED.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |