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OVAL ENG CO LTD

Overview
  • Total Patents
    456
About

OVAL ENG CO LTD has a total of 456 patent applications. Its first patent ever was published in 1968. It filed its patents most often in Japan, United States and Canada. Its main competitors in its focus markets measurement, machines and environmental technology are MIKRO MOUSHN INK, BOPP & REUTHER MESSTECH GMBH and FLUID COMPONENTS INTL.

Patent filings in countries

World map showing OVAL ENG CO LTDs patent filings in countries

Patent filings per year

Chart showing OVAL ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yamamoto Hiroshi 74
#2 Fukami Teruki 34
#3 Misumi Katsuo 32
#4 Numata Hideo 30
#5 Ogawa Yutaka 30
#6 Kanayama Masahiro 28
#7 Okuda Toei 27
#8 Kitami Daiichi 20
#9 Matsubara Naomoto 17
#10 Hotta Koji 15

Latest patents

Publication Filing date Title
JP2005133328A Mounting structure of handrail support for balcony
JP2005090041A Mounting method of balcony handrail strut and mounting structure
JP2003113643A Mounting structure of refuge partitioning plate for multiple dwelling house
JP2003113882A Elastic connection piece
JP2002155582A Connection structure of handrail for corridor between adjacent buildings
JPH10169141A Mounting method of balustrade and mounting construction
JPH07206392A Temporary fixing tool for fence
JPH07207748A Support method for handrall pillar
JPH06146391A Handrail for balcony
FR2670288A1 Test apparatus for flow meters
CA2046044A1 Vortex flowmeter
US5193399A Vortex flowmeter
US5222395A Thermal type flowmeter
JPH04242599A Refueling device
JPH04208816A Simple flow rate control apparatus
JPH04209016A Flow rate control system
JPH04178526A Annular vortex flow meter
JPH04178527A Heat type mass flow meter
JPH04131157A Ultrasonic atomizer
CA2024083A1 Positive displacement flowmeter