Patent US4545928A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4545928A Expired / Lapsed US ⏱️ 0.0 years remaining

Paste for forming a transparent, electrically conductive film

Assignee: Alps Alpine Co Ltd
•
Filing: 1984-04-25
•
Granted: 1985-10-08
•
Expires: 2004-04-25
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention relates to improved paste for forming transparent, electrically conductive films, comprising an organometallic compound that forms a transparent, electrically conductive metal oxide upon calcination, an organic solvent, and a thickening agent, said paste being blended with selected monoazo type organic pigment having defined properties. The paste of the invention has good stability, permits easy printing of line patterns, and makes it possible to form transparent, electrically conductive films that have a low resistance, high transparency and good adhesion.

Inventors

  • 👤 Mitsuru Kano
  • 👤 Yoshimi Kamijo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 08:46
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/83; H10H20/832; H01; H01B; H01B1/00; H01B1/06; H01B1/08; H05; H05B; H05B3/00; H05B3/84; H10F; H10F77/00; H10F77/20; H10F77/244; H10H20/833; H05B2203/00; H05B2203/013

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 151 words
In a paste for forming transparent, electrically conductive films comprising an organometallic compound that forms a transparent metal oxide upon calcination, an organic solvent and a thickening agent; the improvement comprising blending in said paste a lower alkyl group substituted monoazo type compound having the following properties, a. solubility in the selected solvent is less than 0.2% by weight, b. starts to burn at a temperature below 300° C. and leaves little or no residue at 500° C., c. is chemically inert towards the thickening agent, solvent and organometallic compound, d. is essentially free of alkali ions or metal components, e. is a fine powder comprised of particles with an average particles diameter less than 1 μm; and represented by the formula: ##STR7## wherein R and R' are lower alkyl containing up to six carbon atoms and n and m are positive integers the total of which is 4 or 5.
Claim 2
Dependent Claim 151 words
In a paste for forming transparent, electrically conductive films comprising an organometallic compound that forms a transparent metal oxide upon calcination, an organic solvent and a thickening agent; the improvement comprising blending in said paste a lower alkyl group substituted monoazo type compound having the following properties, a. solubility in the selected solvent is less than 0.2% by weight, b. starts to burn at a temperature below 300° C. and leaves little or no residue at 500° C., c. is chemically inert towards the thickening agent, solvent and organometallic compound, d. is essentially free of alkali ions or metal components, e. is a fine powder comprised of particles with an average particles diameter less than 1 μm; and represented by the formula: ##STR7## wherein R and R' are lower alkyl containing up to six carbon atoms and n and m are positive integers the total of which is 4 or 5.
Claim 3
Dependent Claim 13 words
A paste as in claim 1 wherein R and R' are both methyl.
Claim 4
Dependent Claim 16 words
A paste as in claim 2 wherein the monoazo compound is represented by the formula: ##STR8##
Claim 5
Dependent Claim 16 words
A paste as in claim 2 wherein the monoazo compound is represented by the formula: ##STR9##
Claim 6
Dependent Claim 16 words
A paste as in claim 2 wherein the monoazo compound is represented by the formula: ##STR10##
Claim 7
Dependent Claim 16 words
A paste as in claim 2 wherein the monoazo compound is represented by the formula: ##STR11##
Claim 8
Dependent Claim 16 words
A paste as in claim 2 wherein the monoazo compound is represented by the formula: ##STR12##

References Cited (Backward Citations)

US4303554A Cited
US4420500A Cited
US4460496A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-10-07 1989-04-08 1989-10-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-10-07 1993-04-08 1993-10-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-10-07 1997-04-08 1997-10-08 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag