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JAPAN NATIONAL OIL

Overview
  • Total Patents
    46
About

JAPAN NATIONAL OIL has a total of 46 patent applications. Its first patent ever was published in 1986. It filed its patents most often in United States, Japan and EPO (European Patent Office). Its main competitors in its focus markets measurement, civil engineering and telecommunications are TELEDYNE LTD, ROXAR FLOW MEASUREMENT AS and GEOSERVICES EQUIPEMENTS SAS.

Patent filings per year

Chart showing JAPAN NATIONAL OILs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yamazaki Daisuke 7
#2 Haruyama Shuichi 7
#3 Fueki Manabu 7
#4 Shimada Takashi 6
#5 Nishi Tomomi 5
#6 Jitsumori Akio 5
#7 Maekawa Takaaki 5
#8 Inoue Satoru 5
#9 Katagiri Tsutomu 4
#10 Inomata Makoto 4

Latest patents

Publication Filing date Title
JP2000062685A Method and device for loading on sea
JP2000000686A Drilling tool having superior breaking strength in brazed part of cutting edge
JP2000002073A Excavating tool having cutting-edge with excellent compressive strength
JPH11336459A Stabilizer for excavation
JPH11321780A Ship-shaped floating type oil production system
JPH11125615A Electrostatic capacity type water-content rate meter
JPH11125616A Component ratio measuring method of multiphase fluid and component rate meter using the same
JPH11125547A Method for measuring flow rate of each fluid of multiphase fluid, and flowmeter for multiphase fluid
EP0759115A1 Device for controlling the drilling direction of drill bit
US5675325A Information transmitting apparatus using tube body
JPH05256748A Organic substance analysis method and apparatus using portable structure
US5189415A Receiving apparatus
US4828353A Submersible optical wet connector