US3694399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing paper-like polymer film and the product
Assignee: Kimberly Clark Corp
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Filing: 1970-09-25
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Granted: 1972-09-26
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Expires: 1990-09-25
Abstract
Abstract PAPER-LIKE FILMS ARE PRODUCED BY EXTRUDING MOLTEN POLYSTYRENE OR POLYSTYRENE/POLYOLEFIN MIXTURES WITH 1 TO 20% BASED ON THE WEIGHT OF THE POLYMER OR A HYDROLYZABLE METAL ALKYL ESTER OF TITANIUM, SILICON, OR THE LIKE AND ORIENTING LONGITUDINALLY IN A HEATED WATER BATH, THEN STRETCHING LATERALLY IN THE PRESENCE OF STEAM. AFTER DRYING, THE FILM IS OPAQUE, PAPER-LIKE, AND RECEPTIVE TO CONVENTIONAL INKS.
Inventors
- 👤 Eckhard C A Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:30
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; B; B29; B29C; B29C55/00; B29C55/005; B29C55/02; B29C55/10; B29C55/12; B29C55/14; B29C55/143; C; C08; C08J; C08J5/00; C08J5/18; D01D; D01D5/00; D01D5/42; D01D5/423; B29K; B29K2025/00; B29K2025/04; B29K2025/06; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06; C08J2425/00; C08J2425/02; C08J2425/04; C08J2425/06
Claims Analysis
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |