Patents by Inventor Yuichi Kase

Yuichi Kase 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 preparing a catalyst for use in production of methacrylic acid and process of preparing methacrylic acid
    Patent number: 6498270
    Abstract: The present invention provides a process for preparing a catalyst and the same for use in production of methacrylic acid, which is characterized by molding a raw material including a powder containing phosphorus and molybdenum at the specific pressure. The invention also provides a process for preparing methacrylic acid by gas phase oxidation and/or oxidative dehydrogenation of at least one compound selected from the group consisting of methacrolein, isobutyraldehyde and isobutyric acid in the presence of the catalyst.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: December 24, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yuichi Kase, Naomasa Kimura, Hideo Onodera
  • Catalysts for methacrylic acid production and process for producing methacrylic acid
    Patent number: 6476259
    Abstract: Improved catalyst for use in production of methacrylic acid by vapor phase oxidation reaction and/or vapor phase oxidative dehydrogenation reaction of at least one compound selected from methacrolein, isobutylaldehyde and isobutyric acid is provided. This improved catalyst is a composition composed of (A) complex oxide containing as essential components molybdenum and phosphorus, which is per se known as a catalyst for the above reaction(s), and (B) complex oxide containing as essential components cerium and zirconium. When this improved catalyst is used, the operation for producing methacrylic acid can be stably continued over prolonged period.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: November 5, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yuichi Kase, Hideo Onodera
  • Catalysts for methacrylic acid production and process for producing methacrylic acid
    Publication number: 20020052529
    Abstract: Improved catalyst for use in production of methacrylic acid by vapor phase oxidation reaction and/or vapor phase oxidative dehydrogenation reaction of at least one compound selected from methacrolein, isobutylaldehyde and isobutyric acid is provided. This improved catalyst is a composition composed of (A) complex oxide containing as essential components molybdenum and phosphorus, which is per se known as a catalyst for the above reaction(s), and (B) complex oxide containing as essential components cerium and zirconium. When this improved catalyst is used, the operation for producing methacrylic acid can be stably continued over prolonged period.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 2, 2002
    Inventors: Yuichi Kase, Hideo Onodera
  • Catalysts for methacrylic acid production and process for producing methacrylic acid
    Patent number: 6339037
    Abstract: Improved catalyst for use in production of methacrylic acid by vapor phase oxidation reaction and/or vapor phase oxidative dehydrogenation reaction of at least one compound selected from methacrolein, isobutylaldehyde and isobutyric acid is provided. This improved catalyst is a composition composed of (A) complex oxide containing as essential components molybdenum and phosphorus, which is per se known as a catalyst for the above reaction(s), and (B) complex oxide containing as essential components cerium and zirconium. When this improved catalyst is used, the operation for producing methacrylic acid can be stably continued over prolonged period.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: January 15, 2002
    Assignee: Nippon Shokubai Co. Ltd
    Inventors: Yuichi Kase, Hideo Onodera
  • Process for preparing a catalyst for use in production of methacrylic acid and process of preparing methacrylic acid
    Patent number: 6333293
    Abstract: The present invention provides a process for preparing a catalyst and the same for use in production of methacrylic acid, which is characterized by molding a raw material including a powder containing phosphorus and molybdenum at the specific pressure.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: December 25, 2001
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yuichi Kase, Naomasa Kimura, Hideo Onodera