Patent US3573247A successfully refreshed from Google Patents.
US3573247A
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US
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Polyurea elastomer solutions improved by additions of specific inorganic salts
Assignee: Toyo Tire Corp
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Filing: 1967-10-11
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Granted: 1971-03-30
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Expires: 1987-10-11
Abstract
Abstract NOVEL SOLVENT SYSTEMS ARE PROVIDED CONSISTING OF AN INORGAINC SALT AND A KETONE OR ESTER COMPOUND. ALSO PROVIDED ARE STORAGE-STABLE POLYMER SOLUTIONS PREPARED BY UTILIZING SUCH SOLVENT SYSTEM, AND METHODS FOR PREPARING SUCH SOLUTIONS.
Inventors
- 👤 Ichiro Minohe
- 👤 Keijiro Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:36
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08J2375/00; C08J2375/04
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |