Patent US3536576A successfully refreshed from Google Patents.
US3536576A
Expired / Lapsed
US
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Self-sealing space suit
Assignee: United States Department of the Air Force
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Filing: 1968-08-23
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Granted: 1970-10-27
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Expires: 1988-08-23
Abstract
Abstract Disclosed is an opaque, porous polyethylene sheet. Molecular weight of the polyethylene is in excess of 500,000. The porous sheet is capable of receiving a permanent impression and the area receiving the impression becomes translucent. Method for preparing the sheet is described.
Inventors
- 👤 Seymour S Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:38
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0002; B01D67/0023; B01D67/003; B01D39/00; B01D39/14; B01D39/16; B01D39/1692; B41; B41M; B41M5/00; B41M5/124; B64; B64G; B64G6/00; C; C08; C08J; C08J9/00; C08J9/26; C08J2201/00; C08J2201/04; C08J2201/042; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10S; Y10S220/00; Y10S220/902; Y10S428/00; Y10S428/912; Y10S428/913; Y10T; Y10T428/00; Y10T428/20; Y10T428/23; Y10T428/24; Y10T428/24479; Y10T428/24496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2715085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |