Chemical Yamamoto Co., Ltd.
Under the motto of "More corrosion resistance (toughness) and shine to stainless steel," we, as a research-based company, have developed and popularized a neutral salt electrolysis burn removal method for removing weld burns on stainless steel without using toxic or deleterious chemicals. We have also developed a surface modification method called "Ultra Passivation," which is effective in preventing pitting corrosion, a drawback of stainless steel, and stress corrosion cracking, which is the most feared problem in various types of plants made of stainless steel. These technologies won the "Minister of Economy, Trade and Industry Award" at the 8th Monodzukuri Nippon Grand Awards in January 2020. Prior to this, the company was selected as a "Company Driving Regional Growth" by the Ministry of Economy, Trade and Industry at the end of 2017.
In addition, the company is currently expanding its business nationwide by providing ultra passivation treatment services for currently operating food machinery, chemical plants, and other equipment and facilities.
JIS test result to check the effect of electrolyzation for preventing stress corrosion crack accidents
Chemical plant parts and processing scene being excuted surface modification by electrolysis processing.
Surface cleaning technology such as removal of welding burns, rust and dirt on stainless steel, and decontamination of radioactively contaminated metal parts.
・Simple discrimination technology for stainless steel grade and passivation degree of stainless steel.
・Ultra-passivation technology that is dramatically improves the corrosion resistance of stainless steel and is effective in removing stress corrosion cracking of stainless steel.
“Incentive Award of the Chief of Small and Medium Enterprise Agency” from the Japan Institute of Invention and Innovation in 2002
（Third award）
“Award of the Director-General of the Patent Agency” from the Patent Agency in 2002
“Device Merit Award” in the 28th Invention Award sponsored by the Japan Society for the Advancement of Inventions (JSAI) in 2003
“Incentive Award of the Director-General of the Patent Office” by the Japan Institute of Invention and Innovation in 2004
“Invention Merit Award” in the 32nd Invention Award sponsored by JSAI in 2007
“Device Merit Award” in the 36th Invention Award sponsored by JSAI in 2011
“Welding Remarkable Invention Award” by The Japan Welding Engineering Society in 2011
“Invention Encouragement Achievement Award” of Natl. Invention Award by the Japan Institute of Invention and Innovation in 2011
“Award for Excellence” in the 24th Small and Medium Enterprise Great New Technologies and New Product Award sponsored by the Resona Foundation for Small and Medium Enterprise Promotion in 2012
Received “The Order of the Rising Sun, Gold and Silver Rays” in 2013. We have contributed to the development of Japanese stainless steel welding industry.
“Contribution Award” by The Japan Welding Engineering Society in 2014
“Projects to support the advancement of core technologies” (National Institute of Advanced Industrial Science and Technology / Hiroshima Institute of Technology) from 2015 to 2016
“Hiroshima Prefectural Governor Award” of Chugoku Regional Invention Award by the Japan Institute of Invention and Innovation in 2017
“Minister of Economy, Trade and Industry Award” in the 8th Japan Manufacturing Award in 2020
“Invention Merit Award” in the 46th Invention Award sponsored by JSAI in 2021
