US4594182A
Expired / Lapsed
US
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Indium tin oxide sol composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1984-05-29
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Granted: 1986-06-10
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Expires: 2004-05-29
Abstract
Abstract An indium tin oxide sol composition comprising about 0.5 to about 30% by weight of indium oxide, tin oxide in an amount of about 0.5 to about 30% by weight, as converted to a basis of tin, based on indium in the indium oxide, and a dispersing agent, which sol composition is obtained by contacting a solution of an indium salt of an inorganic acid containing a tin salt of an inorganic acid with an ion-exchange resin is disclosed. The indium tin oxide sol composition has a high purity and forms an excellent transparent conductive film.
Inventors
- 👤 Tadanori Hashimoto
- 👤 Hiroshi Yoshitake
- 👤 Hiroyuki Yokoyama
- 👤 Akiko Nakazono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:03
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/253; C09; C09K; C09K3/00; C01; C01G; C01G15/00; C01G15/003; C01G19/00; C01G19/003; C22; C22B; C22B3/00; C22B3/20; C22B3/42; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/23; C03C2217/231; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/116; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
An indium tin oxide sol composition for coating on a substrate to form a transparent conductive film comprising about 0.5 to about 30% by weight of indium oxide, tin oxide in an amount of about 0.5 to about 30% by weight, as converted to a basis of tin, based on indium in the indium oxide, in a dispersing medium, which sol composition is obtained by contacting a solution of an indium salt of an inorganic acid containing a tin salt of an inorganic acid with an ion-exchange resin.
Claim 2
Dependent Claim
88 words
An indium tin oxide sol composition for coating on a substrate to form a transparent conductive film comprising about 0.5 to about 30% by weight of indium oxide, tin oxide in an amount of about 0.5 to about 30% by weight, as converted to a basis of tin, based on indium in the indium oxide, in a dispersing medium, which sol composition is obtained by contacting a solution of an indium salt of an inorganic acid containing a tin salt of an inorganic acid with an ion-exchange resin.
Claim 3
Dependent Claim
25 words
An indium tin oxide sol composition as claimed in claim 1, wherein said indium salt of an inorganic acid is indium chloride or indium nitrate.
Claim 4
Dependent Claim
22 words
An indium tin oxide sol composition as claimed in claim 1, wherein said tin salt of an inorganic acid is stannic chloride.
Claim 5
Dependent Claim
41 words
An indium tin oxide sol composition as claimed in claim 1, wherein said ion-exchange resin is an anion-exchange resin having a primary amino group, a second amino group, a tertiary amino group or a quaternary ammonium group as an exchange group.
Claim 6
Dependent Claim
40 words
An indium tin oxide sol composition as claimed in claim 1, wherein said indium tin oxide sol composition further contains about 0.001 to about 10% by weight of a straight chain, saturated fatty acid having 1 to 18 carbon atoms.
Claim 7
Dependent Claim
18 words
An indium tin oxide sol composition as claimed in claim 5, wherein said fatty acid is acetic acid.
Claim 8
Dependent Claim
23 words
An indium-tin oxide sol composition as claimed in claim 1 wherein said dispersing medium is water, an organic solvent or a mixture thereof.
References Cited (Backward Citations)
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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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |