The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 2024
Filed:
Nov. 30, 2022
Nisshinbo Chemical Inc., Tokyo, JP;
Tomoyuki Araki, Chiba, JP;
Miho Iwai, Chiba, JP;
Takehiro Okei, Chiba, JP;
Kosuke Yasuda, Chiba, JP;
NISSHINBO CHEMICAL INC., Tokyo, JP;
Abstract
This precursor sheet for a fuel cell separator comprises a conductive substrate sheet, a dense layer including first graphite particles, and a conduction layer including second graphite particles, wherein the dense layer and the conduction layer include a resin, the first graphite particles have a volume resistivity of 20 mΩ·cm or greater and a bulk density of 1.7 g/cmor greater when compressed at 30 MPa, and the second graphite particles have a volume resistivity of less than 20 mΩ·cm and a bulk density of 1.5 g/cmor greater when compressed at 30 MPa. This precursor sheet for a fuel cell separator provides a fuel cell separator that has excellent shapability and good mechanical strength, conductivity, and gas impermeability.