US3258340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articles having a surface of polypropylene comprising isotactic macromolecules and a coating adhered to said surface comprising atactic polypropylene; and method for obtaining said articles
Assignee: Montedison SpA
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Filing: 1957-07-31
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Granted: 1966-06-28
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Expires: 1977-07-31
Abstract
No abstract record available.
Inventors
- 👤 Riboni Ubaldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; B; B60; B60B; B60B25/00; B60B25/04; B60B25/10; B60B25/12; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C09; C09J; C09J123/00; C09J123/26; C09J123/32; C09J123/34; G03C1/795; Y; Y10; Y10S; Y10S430/00; Y10S430/136; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AS A NEW ARTICLE OF MANUFACTURE, A PHOTOGRAPHIC FILM WHICH COMPRISES A SUPPORT FORMED OF A STRETCHED AND HEAT-STABILIZED FILM OF A POLYPROPYLENE CONSISTING PREVAILINGLY OF ISOTACTIC MACROMOLECULES, AN ADHESIVE LAYER OF ATACTIC POLYPROPYLENE HAVING AN INTRINSIC VISCOSITY OF FROM ABOUT 0.2 TO ABOUT 0.4, MEASURED IN TETRALIN AT 135* C. ON THE SUPPORT, AN ADHESIVE LAYER OF A MIXTURE OF THE ATACTIC POLYPROPYLENE AND GELATINE ON THE ATACTIC POLYPROPYLENE LAYER, AND A TOP PHOTOSENSITIVE SILVER HALIDE LAYER, THE PHOTOSENSITIVE LAYER BEING PERMANENTLY ANCHORED TO THE SUPPORT BY THE INTERVENING ADHESIVE LAYERS.
Claim 2
Dependent Claim
92 words
AS A NEW ARTICLE OF MANUFACTURE, A PHOTOGRAPHIC FILM WHICH COMPRISES A SUPPORT FORMED OF A STRETCHED AND HEAT-STABILIZED FILM OF A POLYPROPYLENE CONSISTING PREVAILINGLY OF ISOTACTIC MACROMOLECULES, AN ADHESIVE LAYER OF ATACTIC POLYPROPYLENE HAVING AN INTRINSIC VISCOSITY OF FROM ABOUT 0.2 TO ABOUT 0.4, MEASURED IN TETRALIN AT 135* C. ON THE SUPPORT, AN ADHESIVE LAYER OF A MIXTURE OF THE ATACTIC POLYPROPYLENE AND GELATINE ON THE ATACTIC POLYPROPYLENE LAYER, AND A TOP PHOTOSENSITIVE SILVER HALIDE LAYER, THE PHOTOSENSITIVE LAYER BEING PERMANENTLY ANCHORED TO THE SUPPORT BY THE INTERVENING ADHESIVE LAYERS.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |