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DAIDO OXYGEN

Overview
  • Total Patents
    338
About

DAIDO OXYGEN has a total of 338 patent applications. Its first patent ever was published in 1969. It filed its patents most often in Japan, United States and China. Its main competitors in its focus markets surface technology and coating, chemical engineering and machines are PRITCHARD & CO J F, AMERICAN MESSER CORP and CRYOPLANTS LTD.

Patent filings per year

Chart showing DAIDO OXYGENs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yoshino Akira 159
#2 Kitano Kenzo 51
#3 Tahara Masaaki 44
#4 Minato Teruo 37
#5 Senbokuya Haruo 37
#6 Senbokutani Haruo 28
#7 Tawara Masaaki 27
#8 Okumura Kenji 18
#9 Kunihiro Atsushi 18
#10 Kiyama Hiromi 15

Latest patents

Publication Filing date Title
US6020025A Method of manufacturing a crank shaft
US5426998A Crank shaft and method of manufacturing the same
US5460875A Hard austenitic stainless steel screw and a method for manufacturing the same
US5401473A Method and apparatus for treatment of NF3 gas
US5419948A Hard austenitic stainless steel screw and a method for manufacturing the same
US5403409A Nitrided stainless steel products
US5382318A Hard austenitic stainless steel screw and a method for manufacturing the same
US5445683A Nickel alloy products with their surfaces nitrided and hardened
US5252145A Method of nitriding nickel alloy
JPH0587447A Producing apparatus for nitrogen gas
JPH05220321A Method for separating mixed gas and device therefor
CN1075105A Process for manufacturing rolled articles of titanium material
CN1074841A Process for manufacturing compacted articles of aluminium powder
CN1074842A Process for manufacturing compacted articles of aluminium powder
US5176889A Method and apparatus for treatment of NF3 gas
US5194097A Method of nitriding steel and heat treat furnaces used therein
JPH05195193A Nitriding method of nickel alloy
CN1074516A Bent axle and manufacture method thereof
CN1074246A Motor rotary shaft and manufacturing method thereof
JPH0560460A Device for manufacturing high purity nitrogen and oxygen gas