US 11,810,728 B2
Electrolytic capacitor
Satoshi Tani, Nagaokakyo (JP); and Yoshiyuki Nomura, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Sep. 2, 2021, as Appl. No. 17/464,995.
Application 17/464,995 is a continuation of application No. PCT/JP2019/048405, filed on Dec. 11, 2019.
Claims priority of application No. 2019-039674 (JP), filed on Mar. 5, 2019.
Prior Publication US 2021/0398751 A1, Dec. 23, 2021
Int. Cl. H01G 9/10 (2006.01); H01G 9/15 (2006.01); H01G 9/00 (2006.01); H01G 9/26 (2006.01)
CPC H01G 9/10 (2013.01) [H01G 9/15 (2013.01); H01G 9/0029 (2013.01); H01G 9/26 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
a capacitor element including an anode portion made of a metal layer, a dielectric layer on an outer surface of the metal layer, and a cathode portion on an outer surface of the dielectric layer;
an insulating resin body covering the capacitor element, wherein an outer surface of the insulating resin body is a corona discharge treated surface; and
a gas barrier film on the outer surface of the insulating resin body, the gas barrier film having a water vapor transmittance of 1 g/m2 per day or less.