US3307950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping films
Assignee: EIDP Inc
•
Filing: 1963-09-19
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Granted: 1967-03-07
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Expires: 1983-09-19
Abstract
No abstract record available.
Inventors
- 👤 Appelbaum Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:09
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/805; G03C1/91; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PHOTOGRAPHIC STRIPPING FILM COMPRISING A FLEXIBLE FILM BASE BEARING ON AT LEAST ONE SURFACE A STRIPPING LAYER COMPRISING AN N-BUTYL METHACRYLATE/HIGHER ALKYL/ESTER ITACONIC ACID COPOLYMER, WHEREIN SAID HIGHER ALKYL ESTER IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE ALKYL ACRYLATES AND METHACRYLATES WHEREIN THE ALKYL GROUPS CONTAINS 6-12 CARBON ATOMS, THE COMPONENTS BEING PRESENT WITHIN THE RANGES 76-96.5%, 20.3% AND 4.0-0.5%, RE SPECTIVELY.
Claim 2
Dependent Claim
66 words
A PHOTOGRAPHIC STRIPPING FILM COMPRISING A FLEXIBLE FILM BASE BEARING ON AT LEAST ONE SURFACE A STRIPPING LAYER COMPRISING AN N-BUTYL METHACRYLATE/HIGHER ALKYL/ESTER ITACONIC ACID COPOLYMER, WHEREIN SAID HIGHER ALKYL ESTER IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE ALKYL ACRYLATES AND METHACRYLATES WHEREIN THE ALKYL GROUPS CONTAINS 6-12 CARBON ATOMS, THE COMPONENTS BEING PRESENT WITHIN THE RANGES 76-96.5%, 20.3% AND 4.0-0.5%, RE SPECTIVELY.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |