US3234313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic films and process for preparing same
Assignee: Union Carbide Corp
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Filing: 1961-07-03
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Granted: 1966-02-08
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Walter A Miller
- 👤 Stephen O Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
B; B29; B29C; B29C71/00; B29C71/0072; B29C71/02; B41; B41M; B41M5/00; B41M5/26; B41M5/36; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0822; B29C48/00; B29C48/001; B29C48/0018; B29C48/03; B29C48/07; B29C48/08; B29K; B29K2995/00; B29K2995/0018; B29K2995/0025; B29K2995/0037; B29K2995/005; B29K2995/0053; Y; Y10; Y10S; Y10S260/00; Y10S260/32; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
PROCESS FOR PREPARING A FILM TRANSPARENCY BEARING A SUBSTANTIALLY OPAQUE IMAGE SUITABLE FOR PORJECTION ON A VIEWING SCREEN WHICH COMPRISES SELECTIVELY RELAXING THE MOLECULAR ORIENTATION WITHIN THE DESIRED IMAGE-FORMING AREAS OF A SUBSTANTIALLY TRANSPARENT COMPOSITE THERMOPLASTIC FILM COMPOSED OF A MIXTURE OF AT LEAST TWO MUTUALLY INCOMPATIBLE SYNTHETIC ORGANIC RESINS, EACH OF SAID ORGANIC RESINS BEING NORMALLY IN AN AMORPHOUS RUBBERY STATE AT A TEMPERATURE ABOVE THEIR SECOND ORDER TRANSITION TEMPERATURE AND BEING ORIENTABLE AT A COMMON TEMPERATURE, SAID COMPOSITE FILM BEING BIAXIALLY ORIENTED AND HAVING A SHRINKAGE VALUE OF AT LEAST ABOUT 5 PERCENT ALONG EACH OF THE MAJOR AXES AT A TEMPERATURE OF THE POLYMER SPECIES PRESETN IN AN AMOUNT AT LEAST AS GREAT AS ANY OTHER POLYMER SPECIES PRESENT.
Claim 2
Dependent Claim
122 words
PROCESS FOR PREPARING A FILM TRANSPARENCY BEARING A SUBSTANTIALLY OPAQUE IMAGE SUITABLE FOR PORJECTION ON A VIEWING SCREEN WHICH COMPRISES SELECTIVELY RELAXING THE MOLECULAR ORIENTATION WITHIN THE DESIRED IMAGE-FORMING AREAS OF A SUBSTANTIALLY TRANSPARENT COMPOSITE THERMOPLASTIC FILM COMPOSED OF A MIXTURE OF AT LEAST TWO MUTUALLY INCOMPATIBLE SYNTHETIC ORGANIC RESINS, EACH OF SAID ORGANIC RESINS BEING NORMALLY IN AN AMORPHOUS RUBBERY STATE AT A TEMPERATURE ABOVE THEIR SECOND ORDER TRANSITION TEMPERATURE AND BEING ORIENTABLE AT A COMMON TEMPERATURE, SAID COMPOSITE FILM BEING BIAXIALLY ORIENTED AND HAVING A SHRINKAGE VALUE OF AT LEAST ABOUT 5 PERCENT ALONG EACH OF THE MAJOR AXES AT A TEMPERATURE OF THE POLYMER SPECIES PRESETN IN AN AMOUNT AT LEAST AS GREAT AS ANY OTHER POLYMER SPECIES PRESENT.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |