Patent US2390846A successfully refreshed from Google Patents.
US3784530A
Expired / Lapsed
US
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Hydrocarbon-derived resin
Assignee: Goodyear Tire and Rubber Co
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Filing: 1972-01-20
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Granted: 1974-01-08
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Expires: 1992-01-20
Abstract
Abstract A RESINOUS MATERIAL CHARACTERIZED WITH A SOFTENING POINT IN THE RANGE OF ABOUT 60* C. TO ABOUT 110*C. PREPARED BY POLYMERIZING PIPERYLENE, 2-METHYL-2-BUTENE, DICYCLOPENTADIENE AND A-METHYL STYRENE IN THE PRESENCE OF A CATALYST SELECTED FROM ALUMNIUM CHLORIDE AND ETHYL ALUMINUM DICHLORIDE AND A SOLVENT SELECTED FROM ALIPHATIC AND AROMATIC HYDROCARBONS. THE RESINOUS BUTADIENE SYTRENE TICULAR UTILTIY AS A TACKIFIER FOR RUBBERY BUTADIENE STYRENE COPOLYMERS.
Inventors
- 👤 R Osborn
- 👤 Cyr D St
- 👤 H Bullard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:45
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08L; C08L7/00; C08L9/00; C08L9/06; C09; C09J; C09J123/00; C09J123/02; C09J125/00; C09J125/02; C09J125/16; C09J133/00; C09J133/04; C09J133/06; C08F210/00; C08F210/14; C08F232/00; C08F232/02; C08F232/06; C08F236/10; C08L25/00; C08L25/02; C08L25/04; C08L2666/00; C08L2666/02; C08L2666/04; C09J2301/00; C09J2301/30; C09J2301/302; C09J2301/304
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |