US4501971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiographic intensifying screen
Assignee: Fujifilm Holdings Corp
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Filing: 1982-11-19
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Granted: 1985-02-26
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Expires: 2002-11-19
Abstract
Abstract A radiographic intensifying screen comprising a substrate and a fluorescent layer provided thereon and consisting essentially of a binder and a radioluminescent phosphor dispersed therein. The binder comprises linear polyester resin or linear polyester resin crosslinked with a crosslinking agent. The screen exhibits improved physical properties.
Inventors
- 👤 Takeji Ochiai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:32
CPC Classifications
G; G21; G21K; G21K4/00; C; C09; C09K; C09K11/00; C09K11/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
35 words
A radiographic intensifying screen comprising a substrate and a fluorescent layer provided on said substrate and consisting essentially of a binder and a radioluminescent phosphor dispersed therein, said binder comprising linear polyester resin and nitrocellulose.
Claim 2
Dependent Claim
35 words
A radiographic intensifying screen comprising a substrate and a fluorescent layer provided on said substrate and consisting essentially of a binder and a radioluminescent phosphor dispersed therein, said binder comprising linear polyester resin and nitrocellulose.
Claim 3
Dependent Claim
40 words
A radiographic intensifying screen comprising a substrate and a fluorescent layer provided on said substrate and consisting essentially of a binder and a radioluminescent phosphor dispersed therein, said binder comprising nitrocellulose and linear polyester resin crosslinked with a crosslinking agent.
Claim 4
Dependent Claim
40 words
A radiographic intensifying screen comprising a substrate and a fluorescent layer provided on said substrate and consisting essentially of a binder and a radioluminescent phosphor dispersed therein, said binder comprising nitrocellulose and linear polyester resin crosslinked with a crosslinking agent.
Claim 5
Dependent Claim
15 words
A radiographic intensifying screen as claimed in claim 2, wherein said crosslinking agent is diisocyanate.
References Cited (Backward Citations)
US2892747A
Cited
US3164719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |