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RICOH SEIKI CO LTD

Overview
  • Total Patents
    111
About

RICOH SEIKI CO LTD has a total of 111 patent applications. Its first patent ever was published in 1983. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets measurement, micro-structure and nano-technology and semiconductors are First Sensor AG, SAITO TAKAYUKI and SENSIRION HOLDING AG.

Patent filings in countries

World map showing RICOH SEIKI CO LTDs patent filings in countries
# Country Total Patents
#1 Japan 93
#2 United States 11
#3 EPO (European Patent Office) 4
#4 Finland 2
#5 Canada 1

Patent filings per year

Chart showing RICOH SEIKI CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Manaka Junji 49
#2 Ishibashi Tetsuo 8
#3 Nagai Kazuhisa 7
#4 Sato Shigemasa 7
#5 Takashima Shinji 7
#6 Omori Junji 6
#7 Takano Shigeki 6
#8 Iwata Seiichi 5
#9 Higashiyama Keisei 4
#10 Miyaoka Toshiyuki 4

Latest patents

Publication Filing date Title
JPH1096703A Heat conduction parameter sensing method with resistor, and sensor circuit
JPH10213294A Gas pressure regulator and gas pressure regulating element
JPH10206201A Gas meter for different charge by appliance
JPH10176941A Union joint for gas meter
JPH10132628A Fluidic flowmeter
JPH09325056A Fluidic vibration detection circuit
JPH09318413A Gas flowmeter
JPH09318407A Method and apparatus for metering consumed quantity of propane gas
JPH09310955A Refrigerator
JPH09304314A Transpiration rate detecting device
JPH09307030A Cooling device with condensation-preventive function
JPH09300619A Ink jet printer
JPH09196717A Fluidic flowmeter
JPH08327414A Gas meter
JPH08329369A Gas cutoff controller
JPH08308761A Jet water stream type circulating bathtub
JPH08292202A Detector
JPH08234177A Display formed by using substrate of plane bearing and production of this display
JPH08171690A Gas cylinder management method
JPH08136491A Ambient air detecting apparatus