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WASHI KOSAN KK

Overview
  • Total Patents
    232
About

WASHI KOSAN KK has a total of 232 patent applications. Its first patent ever was published in 1980. It filed its patents most often in Japan, WIPO (World Intellectual Property Organization) and EPO (European Patent Office). Its main competitors in its focus markets machine tools, transport and environmental technology are ALBERT LYON GEORGE, FRENCH & HECHT INC and O G T M OHG S R L.

Patent filings per year

Chart showing WASHI KOSAN KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ono Kotaro 131
#2 Tsunoda Kenji 57
#3 Yoshimura Katsunori 46
#4 Sumida Kenji 17
#5 Yamanaka Noriaki 11
#6 Kagei Kazunori 10
#7 Watanabe Katsuyo 8
#8 Narushima Hiroshi 7
#9 Kotaro Ono 7
#10 Ono Minoru 6

Latest patents

Publication Filing date Title
WO2012095940A1 Wheel and method for manufacturing same
JP2012092415A Corrosion prevention of light metal product
JP2013078770A Forged billet, process for production of forged billet, and process for production of wheel
JP2011177785A Forged billet, wheel made from light metal, and processes for production of those products
JP2011148405A Light alloy wheel
JP2011079358A Wheel made of light alloy with reinforced portion on inner rim surface
JP2010083473A Method of manufacturing wheel and wheel
JP2010185093A Magnesium alloy raising young's modulus
JP2009274135A Forged wheel made of light alloy and method for producing the same
JP2009285671A Forged wheel made of light alloy and its manufacturing method
JP2009227861A Primer composition and plastic lens
JP2008137562A Wheel for vehicle
JP2008113775A Device for preventing odor diffusion
JP2008100547A Golf cart
JP2008046282A Progressive multifocal plastic lens for high refractivity eyeglasses
JP2008026657A Processing method for lenses of frameless eyeglasses, and frameless glasses using the same
JP2006031669A Financial product sales method and device
WO2005068221A1 Method of manufacturing light-alloy wheel for vehicle and the wheel
CN1910060A Method of manufacturing light-alloy wheel for vehicle and the wheel
JP2006192464A Die changing device of spinning machine, and spinning machine having the same