Inventor
OHTSUKA HIROFUMI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “OHTSUKA HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OSAKA GAS CO LTD
9 patentsUS6602481B1Aug 5, 2003
Catalyst for removing hydrocarbons from exhaust gas and method for clarification of exhaust gas
OSAKA GAS CO LTD24 citations91
US5993764ANov 30, 1999
Nitrogen oxide-reducing catalyst and process for reducing nitrogen oxides in exhaust gas
OSAKA GAS CO LTD27 citations91
US7364712B2Apr 29, 2008
Catalyst for purifying methane-containing waste gas and method of purifying methane-containing waste gas
OSAKA GAS CO LTD12 citations83
US7371706B2May 13, 2008
Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gas
OSAKA GAS CO LTD10 citations82
US5985225ANov 16, 1999
Nitrogen oxides reduction catalyst and process for reducing nitrogen oxides in exhaust gas
OSAKA GAS CO LTD13 citations73
US6887446B2May 3, 2005
Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gas
OSAKA GAS CO LTD4 citations72
US12194442B2Jan 14, 2025
Gas desulfurizing agent and desulfurizing method
OSAKA GAS CO LTD0 citations57
US10814312B2Oct 27, 2020
Desulfurizing agent for gases and gas desulfurization method
OSAKA GAS CO LTD0 citations48
US12492154B2Dec 9, 2025
Method for producing fuel gas
OSAKA GAS CO LTD0 citations45
MITSUBISHI ELECTRIC CORP
4 patentsUS6687568B2Feb 3, 2004
Transportation system
MITSUBISHI ELECTRIC CORP32 citations89
US6721627B2Apr 13, 2004
Track conveyance system
MITSUBISHI ELECTRIC CORP34 citations86
US6577972B2Jun 10, 2003
Sampling inspection managing system
MITSUBISHI ELECTRIC CORP19 citations81
US6535778B2Mar 18, 2003
Process control method and process control apparatus
MITSUBISHI ELECTRIC CORP8 citations71