US3555129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming moisture permeable self-sustaining and coating films
Assignee: Toyo Tire Corp
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Filing: 1967-07-12
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Granted: 1971-01-12
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Expires: 1987-07-12
Abstract
Abstract IN A PROCESS FOR PRODUCING MOISTURE PERMEABLE POLYMER FILMS BY COATING POLYMER SOLUTION ON A SUBSTRATE, COAGULATING WITH A NON-SOLVENT WHICH IS MISCIBLE WITH THE POLYMER SOLVENT, AND WASHING TO REMOVE THE SOLVENT, THE IMPROVEMENT COMPRISING FACILITATING THE WASHING BY INCORPORATING IN THE POLYMER SOLUTION A PARTICULATE SOLID MATERIAL, THE PARTICLES OF WHICH HAVE DIMENSIONS SUCH THAT THE SMALLEST DIMENSIONS OF THE PARTICLES ARE AT LEAST 0.1 MICRON AND THE LARGEST DIMENSIONS ARE NOT IN EXCESS OF 300 MICRONS. SUITABLE MATERIALS ARE, E.G. CALCIUM CARBONATE, MAGNESIUM CARBONATE, IRON OXIDE, TITANIUM OXIDE, MILLED PULP AND CELLULOSE CRYSTALLITE.
Inventors
- 👤 Kazuo Fukada
- 👤 Yoshiaki Sakata
- 👤 Yoshio Yamada
- 👤 Masaaki Mizuno
- 👤 Hiroaki Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/20; Y; Y10; Y10S; Y10S521/00; Y10S521/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |