US3697367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density composite polymer film
Assignee: Kimberly Clark Corp
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Filing: 1969-12-31
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Granted: 1972-10-10
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Expires: 1989-12-31
Abstract
Abstract AN OPAQUE MICROPOROUS FILM SUITABLE AS PAPER AND CAPABLE OF BEING PRINTED. THE FILM HAS AT LEAST TWO POLYMERS WHICH ARE INCOMPATIBLE WITH EACH OTHER AND ONE POLYMER WHICH IS IN EXCESS HAS A GLASS TRANSITION TEMPERATURE AT LEAST 40*C. LOWER THAN THAT OF ANOTHER POLYMER WITH WHICH IT IS INCOMPATIBLE. DRAWING AT ABOUT THE GLASS TRANSITION TEMPERATURE OF THE POLYMER IS EXCESS RESULTS IN FILM OPACITY.
Inventors
- 👤 Eckhard C A Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:39
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; B29C55/06; C; C08; C08L; C08L101/00; B29C48/00; B29C48/001; B29C48/0012; B29C48/0018; B29C48/03; B29C48/07; B29C48/08; B29C48/12; B29K; B29K2105/00; B29K2105/04; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S521/00; Y10S521/918; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975; Y10T428/298
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |