Patents by Inventor Masaru Uno

Masaru Uno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for adsorbing and separating carbon dioxide from gas mixture
    Patent number: 4726815
    Abstract: Carbon dioxide can be obtained in high recovery with high purity from a gas mixture containing 10% or more of carbon dioxide by a pressure-swing adsorption method wherein moisture in the gas mixture is removed with cooling and heating prior to the adsorption of the carbon dioxide on an adsorbent.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: February 23, 1988
    Assignees: Sumitomo Chemical Company, Limited, Seitetsu Kagaku Co., Ltd.
    Inventors: Kiyoshi Hashimoto, Takumi Kono, Makoto Kurimoto, Masaru Uno
  • Process for producing oxygen-enriched gas
    Patent number: 4684377
    Abstract: An oxygen-enriched gas having an oxygen concentration of, for example, 93% by volume, is produced at a high oxygen recovery rate from a gas mixture containing oxygen and nitrogen as main gas components by pressure swing adsorption, using a set of three adsorption columns, each packed with a zeolite molecular sieve as an adsorbent through a cyclic operation of adsorption under a pressure of from atmospheric pressure to 5,000 mm H.sub.2 O and desorption under vacuum pressure down to the final pressure of 150 mm Hg abs.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: August 4, 1987
    Assignee: Seitetsu Kagaku Co., Ltd.
    Inventors: Kazuo Haruna, Kanji Ueda, Masaru Uno
  • Process for separating carbonic acid gas from methane-rich gas
    Patent number: 4581044
    Abstract: A process for separating and recovering carbonic acid gas from a methane-rich gas containing the same by a pressure swing means comprising contacting the methane-rich gas with an adsorbent for carbonic acid gas at a high pressure to obtain a refined methane gas and then desorbing the carbonic acid from the carbonic acid gas-adsorbed adsorbent at a low pressure to obtain a substantially pure carbonic acid gas.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: April 8, 1986
    Assignee: Seitetsu Kagaku Co., Ltd.
    Inventors: Masaru Uno, Satoshi Ihara, Takeo Tanabe, Masakatsu Hiraoka