MUMBAI, India, June 19 -- Intellectual Property India has published a patent application (202617057614 A) filed by Ppg Industries Ohio, Inc. on May 06, 2026, for Microporous Membranes And Devices Prepared Therefrom.
Inventors include Guo, Qunhui; Faber, Matthew Scott; Hill, Nathan Andrew; and Mcfall, Michael James.
The application for the patent was published on June 05, 2026, under issue no. 23/2026.
Abstract: The present disclosure is directed to microporous membranes in the form of a sheet, comprising a polyolefin matrix and precipitated silica distributed throughout the matrix. The membrane comprises 55 to 80 percent by weight precipitated silica having a surface area greater than 9000 m2/100 grams membrane. The membrane demonstrates a Gurley porosity of 350 to 6000 seconds, and demonstrates a greater translucence when the membrane is wetted with a liquid having a refractive index from 1.400 to 1.550 than when the membrane is not wetted therewith. Also provided are devices comprising: a reservoir configured to contain the liquid and comprising a vertical surface visible to a user; and the microporous membrane described above making up at least a portion of the vertical surface visible to a user. One side of the membrane can contact the liquid and thus provides an indication of fluid level within the reservoir.
Disclaimer: Curated by HT Syndication.
