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TOA VALVE

Overview
  • Total Patents
    36
About

TOA VALVE has a total of 36 patent applications. Its first patent ever was published in 1967. It filed its patents most often in Japan, Germany and United States. Its main competitors in its focus markets machines, mechanical elements and machine tools are RIDDIFORD F, GEMIGNANI ANDRE and OSHIMA TETSUO.

Patent filings in countries

World map showing TOA VALVEs patent filings in countries
# Country Total Patents
#1 Japan 31
#2 Germany 2
#3 United States 2
#4 Switzerland 1

Patent filings per year

Chart showing TOA VALVEs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Manabe Yoshihisa 10
#2 Motoya Masakatsu 4
#3 Hagihara Noboru 3
#4 Takeda Sadao 3
#5 Tanaka Satoshi 3
#6 Yoshioka Tadakatsu 2
#7 Omura Jun 2
#8 Osawa Kenji 2
#9 Oota Etsuzou 2
#10 Yamamoto Masamichi 2

Latest patents

Publication Filing date Title
JP2004239330A Method for reforming manual valve to automatic valve
JP2003269653A Valve
JP2003004165A Valve structure
JP2002277233A Method and instrument for measuring screw abrasion wear
JP2002071871A Relief safety valve having forced actuator
JP2001342519A Method for preventing austenitic stainless steel members from distortion
JP2000065246A Abnormality diagnostic device of motor-operated valve
JP2000055238A Pressure gauge base valve
JPH11210915A Lubricating mechanism of motor-operated valve
JPH11210921A Abnormality diagnostic device for pneumatic valve
JPH09242889A Groove structure of valve plate for such as gate valve
JPH09217892A Automatic oil feeding mechanism for electrically operated valve
JPH0932935A Method for joining lip part to safety valve material
JPH0914498A Opening/closing state monitoring device for manually operated valve
JPH0798064A O-ring for sealing and manufacture thereof
JPH074549A Self-diagnosis device for electric operated valve
JPH05322059A Valve body for safety valve
JPH04244301A Valve seat machining device for gate valve, check valve, etc.
JPH04253569A Automatic welding device for valve seat of sluice valve, check valve or the like
JPH03295433A Torque measuring instrument of electrically operated valve driving device