US3080337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel tripolymers of isobutylene, a cyclodiene, and isoprene
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-11-12
•
Granted: 1963-03-05
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Leon Sherwood Minckler
- 👤 Delmer L Cottle
- 👤 Lemiszka Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:15
CPC Classifications
C; C08; C08F; C08F36/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A SYNETHIC SOLID PLASTIC HYDROCARBON TRIPOLYMER OF A MAJOR PROPORTION BY WEIGHT OF ISOBUTYLENE AND MINOR PROPORTIONS OF (A) A CYCLODIENE HAVING FROM 5 TO 8 CARBON ATOMS AND TWO CONJUGATED DOUBLE BONDS IN A RING STRUCTURE CONSISTING OF 5 TO 6 CARBON ATOMS AND (B) ISOPRENE. 11. A PROCESS FOR REDUCING THE MOONEY VISCOSITY OF BUTYL ROBBER, A COPOLYMER OF ISOBUTYLENE AND A CONJUGATED DIOLEFIN, COMPRISING THE STEPS OF MIXING BUTYL RUBBER WITH FROM 1 TO 25 PARTS BY WEIGHT OF THE TRIPOLYMER OF CLAIM 6; AND MILLING THE RESULTING MIXTURE AT A TEMPERATURE OF 38 TO 205* C. FOR FROM 1 TO 30 MINUTES.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |