Patent US6142827A successfully refreshed from Google Patents.
Patent US5496690A successfully refreshed from Google Patents.
US5496690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base film having dimensional stability and high transparency, and photographic light-sensitive material comprising same
Assignee: Artience Co Ltd
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Filing: 1994-04-28
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Granted: 1996-03-05
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Expires: 2014-04-28
Abstract
Abstract A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on either one or both sides thereof (B) a thin film layer comprising (1) an oxide of silicon and (2) a fluoride of alkaline earth metal, or comprising (1) an oxide of silicon, (2) a fluoride of alkaline earth metal, and (3) an oxide of magnesium, the thin film layer (B) being formed by a vacuum film forming process. A photographic light-sensitive material comprising the base film having dimensional stability and high transparency, having on either one or both sides thereof (C) a photographic layer.
Inventors
- 👤 Toshinori Machida
- 👤 Atsushi Hirokawa
- 👤 Fusao Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:18
CPC Classifications
G; G03; G03F; G03F1/00; G03F1/54; G03C; G03C1/00; G03C1/76; G03C1/795; G03C1/7954; G03C1/91; Y; Y10; Y10S; Y10S430/00; Y10S430/131; Y10S430/136; Y10S430/14; Y10S430/162; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24372; Y10T428/24421
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
52 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising (1) an oxide of silicon and (2) a fluoride of alkaline earth metal, said thin film layer (B) being formed by a vacuum film forming process.
Claim 2
Dependent Claim
52 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising (1) an oxide of silicon and (2) a fluoride of alkaline earth metal, said thin film layer (B) being formed by a vacuum film forming process.
Claim 3
Dependent Claim
35 words
A base film as claimed in claim 1, wherein said fluoride of alkaline earth metal (2) comprises at least one selected from the group consisting of magnesium fluoride, calcium fluoride, strontium fluoride, and barium fluoride.
Claim 4
Dependent Claim
18 words
A base film as claimed in claim 1, wherein said plastic film (A) is a polyethylene terephthalate film.
Claim 5
Dependent Claim
53 words
A base film as claimed in claim 1, wherein the content of said oxide of silicon (1) is from 80 to 98 mol %, and the content of said fluoride of alkaline earth metal (2) from 2 to 20 mol %, both based on the total amount of said thin film layer (B).
Claim 6
Dependent Claim
40 words
A base film as claimed in claim 1, said thin film layer (B) is formed by a vacuum film forming process using a mixture of silicon, silicon dioxide, and a fluoride of an alkaline earth metal, as a starting material.
Claim 7
Dependent Claim
39 words
A base film as claimed in claim 1, said thin film layer (B) is formed by a vacuum film forming process using a mixture of silicon monoxide and a fluoride of an alkaline earth metal, as a starting material.
Claim 8
Dependent Claim
57 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising (1) an oxide of silicon, (2) a fluoride of alkaline earth metal, and (3) an oxide of magnesium, said thin film layer (B) being formed by a vacuum film forming process.
Claim 9
Dependent Claim
57 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising (1) an oxide of silicon, (2) a fluoride of alkaline earth metal, and (3) an oxide of magnesium, said thin film layer (B) being formed by a vacuum film forming process.
Claim 10
Dependent Claim
35 words
A base film as claimed in claim 7, wherein said fluoride of alkaline earth metal (2) comprises at least one selected from the group consisting of magnesium fluoride, calcium fluoride, strontium fluoride, and barium fluoride.
Claim 11
Dependent Claim
18 words
A base film as claimed in claim 7, wherein said plastic film (A) is a polyethylene terephthalate film.
Claim 12
Dependent Claim
69 words
A base film as claimed in claim 7, wherein the content of said oxide of silicon (1) is from 80 to 97.5 mol %, the content of said fluoride of alkaline earth metal (2) is from 2 to 19.5 mol %, and the content of said oxide of magnesium (3) is from 0.5 to 18 mol %, all based on the total amount of said thin film layer (B).
Claim 13
Dependent Claim
48 words
A base film as claimed in claim 7, said thin film layer (B) is formed by a vacuum film forming process using a mixture of silicon, silicon dioxide, a fluoride of an alkaline earth metal, and a co-oxide of silicon dioxide and magnesium oxide, as a starting material.
Claim 14
Dependent Claim
47 words
A base film as claimed in claim 7, said thin film layer (B) is formed by a vacuum film forming process using a mixture of silicon monoxide, a fluoride of an alkaline earth metal, and a co-oxide of silicon dioxide and magnesium oxide, as a starting material.
Claim 15
Dependent Claim
51 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising a siloxane unit having bonded thereto a fluoride of an alkaline earth metal, said thin film layer (B) being formed by vacuum film forming process.
Claim 16
Dependent Claim
51 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising a siloxane unit having bonded thereto a fluoride of an alkaline earth metal, said thin film layer (B) being formed by vacuum film forming process.
Claim 17
Dependent Claim
34 words
A base film as claimed in claim 13, wherein said fluoride of alkaline earth metal comprises at least one selected from the group consisting of magnesium fluoride, calcium fluoride, strontium fluoride, and barium fluoride.
Claim 18
Dependent Claim
56 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising a siloxane unit having bonded thereto a fluoride of an alkaline earth metal and an oxide of magnesium, said thin film layer (B) being formed by vacuum film forming process.
Claim 19
Dependent Claim
56 words
A base film having dimensional stability and high transparency, which comprises (A) a plastic film having on both sides thereof (B) a thin film layer comprising a siloxane unit having bonded thereto a fluoride of an alkaline earth metal and an oxide of magnesium, said thin film layer (B) being formed by vacuum film forming process.
Claim 20
Dependent Claim
34 words
A base film as claimed in claim 15, wherein said fluoride of alkaline earth metal comprises at least one selected from the group consisting of magnesium fluoride, calcium fluoride, strontium fluoride, and barium fluoride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-05 | 1999-09-04 | 2000-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-05 | 2003-09-04 | 2004-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-05 | 2007-09-04 | 2008-03-05 | $7700.00 | Window Closed / Lapsed |