US3205214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperylene polymerization
Assignee: Bridgestone Firestone Inc
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Filing: 1961-05-15
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Granted: 1965-09-07
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Talcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:00
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/045; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE PROCESS OF POLYMERIZING PIPERLENE WHICH COMPRISES TREATING THE PIPERYLENE IN A HYDROCARBON SOLVENT AT A TEMPERATURE BETWEEN 0 AND 100*C. WITH 0.2 TO 20 MILLIMOLES OF CATALYST PER 100 MOLES OF MONOMER, THE CATALLYST BEING COMPOSSED OF A TRIALKYL ALUMINUM COMPOUND AND A HALIDE OF TITANIUM THAT INCLUDES AT LEAST ONE ATOM OF IODINE FOR ONE ATOM OF TITANIUM, THE MOLAR RATIO OF THE ALUMINUM COMPOUND TO THE HALIDE BEING WITHIN THE RANGE OF 0.5/1 TO 4/1.
Claim 2
Dependent Claim
78 words
THE PROCESS OF POLYMERIZING PIPERLENE WHICH COMPRISES TREATING THE PIPERYLENE IN A HYDROCARBON SOLVENT AT A TEMPERATURE BETWEEN 0 AND 100*C. WITH 0.2 TO 20 MILLIMOLES OF CATALYST PER 100 MOLES OF MONOMER, THE CATALLYST BEING COMPOSSED OF A TRIALKYL ALUMINUM COMPOUND AND A HALIDE OF TITANIUM THAT INCLUDES AT LEAST ONE ATOM OF IODINE FOR ONE ATOM OF TITANIUM, THE MOLAR RATIO OF THE ALUMINUM COMPOUND TO THE HALIDE BEING WITHIN THE RANGE OF 0.5/1 TO 4/1.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |