Patents by Inventor Fumio Manabe

Fumio Manabe 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 of causing intergranular stress corrosion crack to generate and grow in sample
    Patent number: 7416623
    Abstract: To provide a method for simply and easily causing only IGSCC to initiate and grow in a specimen, which can retain corrosion resistance through passivation, under atmospheric pressure in a short time, an aqueous solution of potassium tetrathionate is brought into contact with the specimen capable of retaining corrosion resistance through passivation. The potassium tetrathionate concentration, temperature and pH value of the aqueous solution are from 0.3 to 6 wt. %, from 5 to 60° C., and from 3 to 6, respectively.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: August 26, 2008
    Assignee: Babcock-Hitachi K.K.
    Inventors: Kiyoshi Yamauchi, Fumio Manabe
  • Method of causing intergranular stress corrosion crack to generate and grow in sample
    Publication number: 20050167014
    Abstract: To provide a method for simply and easily causing only IGSCC to initiate and grow in a specimen, which can retain corrosion resistance through passivation, under atmospheric pressure in a short time, an aqueous solution of potassium tetrathionate is brought into contact with the specimen capable of retaining corrosion resistance through passivation. The potassium tetrathionate concentration, temperature and pH value of the aqueous solution are from 0.3 to 6 wt. %, from 5 to 60° C., and from 3 to 6, respectively.
    Type: Application
    Filed: April 25, 2003
    Publication date: August 4, 2005
    Applicant: Babcock-Hitachi K.K.
    Inventors: Kiyoshi Yamauchi, Fumio Manabe