IP Library › Granted Patent US 12,555,700
Granted Patent B2
US 12,555,700 · App. 18/189,694 · Granted Feb 17, 2026

Conductive membrane transfer sheet and method for producing the same, conductive object and method for producing the same, and conductive membrane

Inventors: Kenji Komoto (Tokyo, JP); Hironori Ishikawa (Tokyo, JP); Masato Kurihara (Yamagata, JP); Manabu Ishizaki (Yamagata, JP)
Assignees: TOPPAN Holdings Inc.; Masato Kurihara; Manabu Ishizaki
H01B5/14B32B9/02B32B9/045B32B27/08B32B27/304B32B27/322B32B37/0038H01B13/00B32B2038/168B32B2250/24B32B2255/10B32B2305/026B32B2307/748B32B2317/18B32B2327/00B32B2327/18
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Quick Facts
Patent No.
US 12,555,700
App. No.
18/189,694
Granted
Feb 17, 2026
Kind
B2
Abstract

According to an embodiment of the present invention, a conductive membrane transfer sheet including a first release sheet and a conductive membrane is provided. The first release sheet includes a liquid-permeable sheet. The conductive membrane includes a conductive fiber supported on a first major surface of the first release sheet. The first release sheet and the conductive membrane contain a first liquid.

Claims (13)

1 . A conductive membrane transfer sheet comprising:

a first release sheet comprising a liquid-permeable sheet; and

a second release sheet being a water-absorbing gel sheet of sodium polyacrylate, polyacrylamide, agar or carrageenan, or a water-absorbing paper; and

a conductive membrane comprising a conductive fiber located between and bonded to the first release sheet and the second release sheet,

wherein the first release sheet and the conductive membrane contain a first liquid,

the first liquid is water or contains water,

the first release sheet comprises pores with a pore size in a range of 0.05 μm to 5 μm and comprises one or more selected from polytetrafluoroethylene, polyvinylidene fluoride, polyvinylidene chloride, polypropylene, polyethylene, and polycarbonate,

a total mass of the first liquid contained in the first release sheet and the conductive membrane is in a range of 50 mass % to 200 mass % with respect to a mass of the first release sheet, and

wherein the second release sheet contains a liquid equivalent to the first liquid.

2 . The conductive membrane transfer sheet according to claim 1 , wherein the first liquid contained in the first release sheet and the conductive membrane is a dispersion solvent of a dispersion liquid for the conductive fiber used for forming the conductive membrane.

3 . The conductive membrane transfer sheet according to claim 1 , comprising at least a carbon nanotube as the conductive fiber.

4 . The conductive membrane transfer sheet according to claim 3 , further comprising, as the conductive fiber, a conductive fiber element other than the carbon nanotube.

5 . The conductive membrane transfer sheet according to claim 1 , wherein the first release sheet contains one or more materials selected from polytetrafluoroethylene, and polyvinylidene fluoride.

Assignments (2)
CHANGE OF NAME Recorded Aug 21, 2024
From: TOPPAN INC.
To: TOPPAN HOLDINGS INC.
Reel/Frame 068736/0367 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 24, 2023
From: KOMOTO, KENJI; ISHIKAWA, HIRONORI; KURIHARA, MASATO; ISHIZAKI, MANABU
To: TOPPAN INC.; KURIHARA, MASATO; ISHIZAKI, MANABU
Reel/Frame 063096/0120 →
Priority Claims (1)
JP 2020-166964 · Oct 1, 2020 · national
Continuity (2)
Continuation PCTJP2021035860 · Sep 29, 2021
Related Publication 20230260673A1 · Aug 17, 2023
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