US3663625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(1-alkyl(or aryl)vinyl)p-phenylene oxide monomers
Assignee: Bechtel International Corp
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Filing: 1970-04-23
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Granted: 1972-05-16
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Expires: 1990-04-23
Abstract
Abstract THIS INVENTION RELATES TO A GROUP OF POLYINDANYL POLYMERS DERIVED FROM DISUBSTITUTED PHENYLENE OXIDES. WHEN SUITABLY CATALYZED, THE MONOMERS OF THE INVENTION ARE POLYMERIZED TO MATERIALS THAT EXHIBIT IMPROVED THERMAL STABILITY, CHEMICAL RESISTANCE AND MECHANICAL FLEXIBILITY. THESE POLYMERIC PRODUCTS CAN BE EMPLOYED AS ADHESIVES, COATING MATERIALS, AND LAMINATING RESINS; AND, WHEN SUITABLY REINFORCED, THEY CAN BE USED AS STRUCTURAL PLASTICS.
Inventors
- 👤 Roy G Neville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:54
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/84; C07C45/00; C07C45/45; C07C45/46
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |