Patent US3376238A successfully refreshed from Google Patents.
US3376238A
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Process for forming crosslinked oriented, microporous polyolefin film
Assignee: Individual
•
Filing: 1966-05-19
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Granted: 1968-04-02
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Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Razmic S Gregorian
- 👤 Charles C Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08J5/00; C08J5/18; C08J9/26; C08J2201/00; C08J2201/04; C08J2201/042; C08J2201/0422; C08J2201/044; C08J2201/0444; C08J2201/046; C08J2323/00; C08J2323/02; Y; Y10; Y10S; Y10S264/00; Y10S264/18; Y10S264/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |