US3583967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for obtaining polymer from polymer solution
Assignee: Kao Corp
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Filing: 1968-12-06
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Granted: 1971-06-08
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Expires: 1988-12-06
Abstract
Abstract A SYNTHETIC RUBBER OR RUBBERY POLYMER IS RECOVERED IN THE FORM OF A DISPERSION OF PARTICLES THEREOF IN WATER BY FEEDING, INTO HEATED WATER IN THE PRESENCE OF SURFACE ACTIVE AGENTS ACTING AS AN ANIONIC SURFACE ACTIVE AGENT AND A CATIONIC SURFACE ACTIVE AGENT, A SOLVENT SOLUTION OF THE SYNTHETIC RUBBER OR RUBBERY POLYMER OBTAINED BY SOLUTIONPOLYMERIZATION, AND STRIPPING THE SOLVENT FROM THE SOLUTION.
Inventors
- 👤 Kenichi Hattori
- 👤 Yoshiaki Komeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:36
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/06
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |