Patents by Inventor Okitsugu Kajimoto

Okitsugu Kajimoto 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 production of hydrogen and carbonyl compounds by reacting sub- or super-critical water with alcohols
    Patent number: 7166753
    Abstract: A process for producing a carbonyl compound involves allowing water to undergo phase transition to a supercritical or subcritical state in the presence of an alcohol compound so as to produce/generate water-derived hydrogen and at the same time convert the alcohol compound into a corresponding carbonyl compound. Specifically, the process is carried out by introducing the alcohol in a reaction tube along with water and heating and/or pressurizing the mixture of the alcohol and the water to bring the water into a subcritical or supercritical state. In this manner, water-derived hydrogen is produced and the alcohol is converted to a corresponding carbonyl compound. The process is preferably carried out in an oxygen-free environment.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: January 23, 2007
    Assignee: Suntory Limited
    Inventors: Koichi Nakahara, Kenzo Nagami, Okitsugu Kajimoto, Kazuya Kobiro
  • Process for production of hydrogen and carbonyl compounds by reacting sub-or super-critical water with alcohols
    Publication number: 20050154237
    Abstract: A process for producing a carbonyl compound involves allowing water to undergo phase transition to a supercritical or subcritical state in the presence of an alcohol compound so as to produce/generate water-derived hydrogen and at the same time convert the alcohol compound into a corresponding carbonyl compound. Specifically, the process is carried out by introducing the alcohol in a reaction tube along with water and heating and/or pressurizing the mixture of the alcohol and the water to bring the water into a subcritical or supercritical state. In this manner, water-derived hydrogen is produced and the alcohol is converted to a corresponding carbonyl compound. The process is preferably carried out in an oxygen-free environment.
    Type: Application
    Filed: April 9, 2003
    Publication date: July 14, 2005
    Inventors: Koichi Nakahara, Kenzo Nagami, Okitsugu Kajimoto, Kazuya Kobiro