Patents by Inventor Tetsushi Nishiyama

Tetsushi Nishiyama 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).

  • Method for producing heteroaromatic aldehydes
    Patent number: 6444815
    Abstract: There is provided a process for preparing a heteroaromatic aldehyde by catalytic reaction of alkyl-substituted heteroaromatic compound with molecular oxygen in a gaseous phase in the presence of a catalyst, which comprises employing an oxide containing vanadium, phosphorus, aluminium and silicon as a catalyst, and diluting a part or all of the oxide present as a catalyst layer in a reactor with a solid inert to the reaction.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: September 3, 2002
    Assignee: Koei Chemical Co., Ltd.
    Inventors: Tetsushi Nishiyama, Toru Nakaishi, Takayuki Shoji