MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202617074248 A) filed by Asahi Kasei Kabushiki Kaisha on June 15, 2026, for Separator For Power Storage Devices, And Power Storage Device.

Inventors include Kusuzaka, Keita; Sugita, Yoshiyuki; and Uchida, Kazunori.

The application for the patent was published on July 10, 2026, under issue no. 28/2026.

Abstract: Provided is a separator for power storage devices, the separator comprising a separator base material constituted by a microporous film containing a polyolefin as a main component, the separator including a microporous layer (A) having: a trunk height of 500 nm- 1000 nm inclusive, calculated by analysis of a scanning electron microscope (SEM)...