Masayuki Katougi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light emitting device, socket device and lighting device
- Patent number 6,325,651
- Issue date Dec 4, 2001
- Moriyama Sangyo Kabushiki Kaisha
- Hiroyoshi Nishihara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electric lamp device and lighting apparatus
- Patent number 6,234,649
- Issue date May 22, 2001
- Moriyama Sangyo Kabushiki Kaisha
- Masayuki Katougi
- F21 - LIGHTING
Information Patent Grant
Light bulb device
- Patent number 6,153,972
- Issue date Nov 28, 2000
- Moriyama Sangyo Kabushiki Kaisha
- Masayuki Katougi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Equipment using mounting hole of ceiling as fixing element and acce...
- Patent number 6,095,660
- Issue date Aug 1, 2000
- Moriyama Sangyo Kabushiki Kaisha
- Hideo Moriyama
- F21 - LIGHTING
Information Patent Grant
Equipment using mounting hole of ceiling as fixing element and acce...
- Patent number 5,967,640
- Issue date Oct 19, 1999
- Moriyama Sangyo Kabushiki Kaisha
- Hideo Moriyama
- F21 - LIGHTING