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Yoshiro Yamada Edit Profile

Metallurgical engineer

Yoshiro Yamada, Japanese metallurgical engineer. Recipient award, President of Japan Society for Patent Attorney, 1987, Japanese Government Patent Agency Chief Officer, 1991, American medal of Honor, American Biographical Institute, 2002, others.


Yamada, Yoshiro was born on January 23, 1942 in Ono, Hyogo, Japan. Son of Tetsuo and Yasuyo (Kobayashi) Yamada.


Bachelor of Engineering, Osaka University, 1964. Master of Engineering, Osaka University, 1966. Doctor Engineering, Osaka University, 1976.


Researcher/research leader Central Research Laboratory Kobe Steel Ltd., 1966-1978, chief researcher wire rod and bar development department, 1979-1985, vice-general manager, section manager, 1986—1988, general manager, 1989-1991, general manager wire rod and bar technical department, 1992-1993. Director Suncall Corporation, Kyoto, 1993-1999, executive technical advisor, 1999—2002, technical advisor, 2003. Representative Yamada Research and Consultant Office, since 2002.

Part-time graduate school lecturer Kansai University, since 2002. Lecturer Setsunan University, Osaka, Japan, since 2006. Part-time lecturer Ryukoku University, 2008.


  • Achievements include 28 national patents and 8 international patents in field of light weight suspension springs and engine valve springs. Development of heat treatment free production methods of prestressed concrete wire/strands and cold heading wire for sparking plug shell. Development of direct cooling (by water) system for dry drawing of high strength wire.

    Development of high strength steel tire cord material, super clean valve spring steel, highest strength suspension bridge main cable wire for Akashi Kaikyo (Strait) Bridge. Development of high strength bolt with improved resistance to delayed fracture, others.


  • Other Work

    • Contributor articles to professional journals. Editor, co-author Materials for Springs, 2007.


Member of Japan Society for Heat Treatment, Fine Particle Bombarding Society Japan (advisor since 2002), Society Materials Science of Japan, American Society for Microbiology International, Japan Society for Technology of Plasticity (Aida Technical award 1977), Institute Professional Engineers Japan, Wire Association International (Honorary mention 1976, Medals award 1986, 1992), Iron and Steel Institute Japan (Nishiyama Memorial award 1994), Japan Society Spring Engineers (director 1987-1992, 1996—2002, advisor 2003-2008, honorary member since 2008, Technical award 1987).


Married Keiko Kanemoto, November 29, 1970. 1 child, Hotta Eri.

Tetsuo Yamada

Yasuyo (Kobayashi) Yamada

Keiko Kanemoto

Hotta Eri Yamada