US3244683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of 2, 2, 4-trimethyl-1, 2-dihydroquinoline
Assignee: Goodyear Tire and Rubber Co
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Filing: 1963-01-17
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Granted: 1966-04-05
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Richard H Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0683; C08G73/0688; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C08K5/3467; C08K5/3477; C08K5/3495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR THE PRODUCTION OF RUBBER ANTIOXIDANTS WHICH CONSISTS IN POLYMERIZING 2,2,4-TRIMETHYLL-1,2-DIHYDROQUINOLINE IN THE PRESENCE OF A CATALYTIC AMOUNT OF ANHYDROUS ALUMINUM CHLORIDE, SAID POLYMERIZATION BEING CONDUCTED AT A TEMPERATURE BETWEEN 80 AND 140*C.
Claim 2
Dependent Claim
35 words
A PROCESS FOR THE PRODUCTION OF RUBBER ANTIOXIDANTS WHICH CONSISTS IN POLYMERIZING 2,2,4-TRIMETHYLL-1,2-DIHYDROQUINOLINE IN THE PRESENCE OF A CATALYTIC AMOUNT OF ANHYDROUS ALUMINUM CHLORIDE, SAID POLYMERIZATION BEING CONDUCTED AT A TEMPERATURE BETWEEN 80 AND 140*C.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |