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RIYOOSAN KK

Overview
  • Total Patents
    20
About

RIYOOSAN KK has a total of 20 patent applications. Its first patent ever was published in 1980. It filed its patents most often in Japan. Its main competitors in its focus markets semiconductors and thermal processes are LIN CHUN-HUNG, CONVERGENCE TECHNOLOGIES LTD and FU ZHUN PREC INDUSTRY SHENZHEN.

Patent filings in countries

World map showing RIYOOSAN KKs patent filings in countries
# Country Total Patents
#1 Japan 20

Patent filings per year

Chart showing RIYOOSAN KKs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Nagamine Akima 5
#2 Takahashi Junichi 4
#3 Suzuki Masao 3
#4 Futaki Kenji 3
#5 Yasumura Nobunao 2
#6 Yano Toshihiko 1
#7 Sano Masayuki 1
#8 Sasa Shinichiro 1
#9 Seki Katsuhiko 1
#10 Sakata Tomosada 1

Latest patents

Publication Filing date Title
JPH1131771A Manufacture of heat sink for semiconductor element use
JPH1079459A Heat sink, excellent in heat dissipation effect for semiconductor element use
JPH09191068A Semiconductor chip heat sink having excellent heat radiation effect
JPH0917926A Semiconductor element cooling mechanism
JPH0917920A Semiconductor element cooling heat sink
JPH08236668A Heat sink for semiconductor element excellent in heat dissipation effect
JPH07283351A Heat sink for cooling semiconductor element
JPH06348983A Monitoring device using optical transmission line
JPH06301034A Back light device and assembling method therefor
JPH06161824A Automatic software evaluation system for microcomputer
JPH05308779A Inverter equipment
JPH05307177A Back light device
JPH05100223A Light source device
JPH08150853A Automobile engine start control device at time drunken driving
JPH04168418A Light source device
JPH03196088A Light source device
JPH0267791A Cooling device for printed circuit board
JPH01169957A Heat dissipating apparatus for semiconductor element
JPS5998542A Enclosed structure flat semiconductor element cooler
JPS5756956A Spray air stream type heat radiator