US3700630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified polyphenylene oxide and method for production thereof
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1971-08-23
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Granted: 1972-10-24
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Expires: 1991-08-23
Abstract
Abstract MODIFIED POLYPHENYLENE OXIDES EXCELLENT IN PROCESSABILITY AND MOLDABILITY ARE OBTAINED BY GRAFT-POLYMERIZING ON A POLYPHENYLENE OXIDE A STYRENE TYPE COMPOUND OR A MIXTURE OF THE STYRENE TYPE COMPOUND AND AN A-ALKYL SUBSTITUTION PRODUCT OF SAID COMPOUND, IN AN AQUEOUS DISPERSION CONTAING AN ANIONIC OR NONIONIC SURFACTANT, A RADICAL INITIATOR AND A SOLVENT FOR THE POLYPHENYLENE OXIDE.
Inventors
- 👤 Takaki Hamada
- 👤 Seizo Nakashio
- 👤 Isao Maruta
- 👤 Kazuo Hayatsu
- 👤 Tetsuki Seto
- 👤 Yoichi Kono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:11
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/06; C08F283/08
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |