US3734866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polymeric aromatic compositions
Assignee: Goodyear Tire and Rubber Co
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Filing: 1971-06-09
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Granted: 1973-05-22
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Expires: 1991-06-09
Abstract
Abstract THE INVENTION RELATES TO POLYMERIC AROMATIC COMPOUNDS AND TO THE PREPARATION OF THESE MATERIALS BY POLYMERIZING THE MONOMERIC AROMATIC COMPOUND USING A CATALYST COMPRISING AN ACTIVE METAL HALIDE, CHLORANIL AND WATER. THESE POLYMERS ARE LINEAR CHAINS OF AROMATIC RINGS ATTACHED TOGETHER.
Inventors
- 👤 S Aylies
- 👤 M Hillhouse
- 👤 A Kyriakis
- 👤 B Pengilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:38
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |