MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202614017214 A) filed by Kumagai Gumi Co. , Ltd.; and Huens Co. , Ltd. on February 16, 2026, for Method For Producing High-Purity Methane Gas.
Inventors include Maruyama, Toshihiko; Takahashi, Manabu -; Kawano, Suehiro; Nakahata, Yuusuke; Asano, Takayuki; Nomura, Yasuyuki; and Naito, Satoshi.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: A method for producing high-purity methane. A method for producing high-purity methane including a step (1) of passing a crude gas containing methane through an aqueous liquid containing calcium hydroxide, and a step (2) of passing a gas containing 5 carbon dioxi...