US4547798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state color imaging device and the preparation of same
Assignee: Fujifilm Holdings Corp
•
Filing: 1983-11-30
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Granted: 1985-10-15
•
Expires: 2003-11-30
Abstract
Abstract A solid-state color imaging device carrying a micro-color filter which is reduced in its alkali metal ion content to a level of not more than 100 ppm is prepared through formation of a substrate of at least one colored resin layer of the micro-color filter using, as the substrate material, a water-soluble protein such as gelatin whose alkali metal ion content is not more than 20 ppm.
Inventors
- 👤 Kenji Matsumoto
- 👤 Shoichi Yamamoto
- 👤 Jun Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:09
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/30; H10F77/306; H10F77/331; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A solid-state imaging device provided with at least one hardened-protein layer thereon characterized in that said hardened-protein layer is made of a photohardening water-soluble protein selected from the group consisting of gelatin and casein whose total alkali metal ion content is not more than 20 ppm.
Claim 2
Dependent Claim
46 words
A solid-state imaging device provided with at least one hardened-protein layer thereon characterized in that said hardened-protein layer is made of a photohardening water-soluble protein selected from the group consisting of gelatin and casein whose total alkali metal ion content is not more than 20 ppm.
Claim 3
Dependent Claim
26 words
The solid-state imaging device claimed in claim 1, in which said total alkali metal ion content of the protein layer is not more than 10 ppm.
Claim 4
Dependent Claim
26 words
The solid-state imaging device claimed in claim 1, in which said total alkali metal ion content of the protein layer is not more than 5 ppm.
Claim 5
Dependent Claim
20 words
The solid-state imaging device claimed in any one of claims 1 to 3, in which said water-soluble protein is gelatin.
References Cited (Backward Citations)
US4204866A
Cited
US4285007A
Cited
US4416961A
Cited
US4479143A
Cited
US4430666A
Cited
US4355087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |