Patents by Inventor Yoshiaki Tachi

Yoshiaki Tachi 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).

  • Super heat-resisting Mo-based alloy and method of producing same
    Patent number: 6210497
    Abstract: A super heat-resisting molybdenum-based alloy is disclosed. The alloy includes two or more alloying elements, the type and amount of the alloying elements being determined such that their average d-orbital energy level (average Md) and average bond order (average Bo) satisfy the following formula (3) and such that Tm is in the range of 2250-2700° C. in the following formula (4), the average Md and Bo being calculated by the formulas (1) and (2), and the bond order (Bo) with molybdenum and a d-orbital energy level being determined by the DV−X&agr; cluster method: Average Bo=&Sgr;Boi×C1  (1) Average Md=&Sgr;Mdi×Ci  (2) 1.718≦average Md≦1.881  (3) Tm(°C.)=(average Bo−0.165×average Md−4.899)/9.279×10−5  (4) wherein, Boi is a bond order of element “i”, Mdi is a d-orbital energy level of element “i”, and C1 is an atomic percent of element “i”.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: April 3, 2001
    Assignees: Doryokuro Kakunenryo Kaihatsu Jigyodan, Toyohashi University of Technology
    Inventors: Junichi Saito, Yoshiaki Tachi, Shigeki Kano, Masahiko Morinaga, Yoshinori Murata, Satoshi Inoue, Mitsuaki Furui