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Patent US3407253A successfully refreshed from Google Patents.
US3407253A
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Oriented porous polyolefin-elastomer blend sheets and process of making same
Assignee: Toyobo Co Ltd
•
Filing: 1966-05-03
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Granted: 1968-10-22
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Expires: 1986-05-03
Abstract
No abstract record available.
Inventors
- 👤 Yoshimura Shohei
- 👤 Yamaguchi Takeshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:55
CPC Classifications
B; B29; B29C; B29C44/00; C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L25/00; C08L25/02; C08L25/04; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/18; C08J2323/20; C08J2323/22; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10T; Y10T428/00; Y10T428/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2631954A
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US3086947A
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US3037954A
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US3074616A
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US3265769A
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US3265770A
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US3246061A
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US3250825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |