Hiroshi Akai

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Hiroshima-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Infrared reflecting black pigment, and paint and resin composition...
- Patent number 8,546,475
- Issue date Oct 1, 2013
- Toda Kogyo Corporation
- Shinsuke Maruyama
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magnetic iron oxide particles and magnetic toner using the same
- Patent number 7,144,626
- Issue date Dec 5, 2006
- Toda Kogyo Corporation
- Hiroshi Akai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic particles and magnetic carrier for electrophotographic dev...
- Patent number 6,106,987
- Issue date Aug 22, 2000
- Toda Kogyo Corporation
- Toshiyuki Hakata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnetic particles and magnetic carrier for electrophotographic dev...
- Patent number 6,087,057
- Issue date Jul 11, 2000
- Toda Kogyo Corporation
- Toshiyuki Hakata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
INFRARED REFLECTING BLACK PIGMENT, AND PAINT AND RESIN COMPOSITION...
- Publication number 20120270986
- Publication date Oct 25, 2012
- Shinsuke Maruyama
- G02 - OPTICS
Information Patent Application
Magnetic iron oxide particles and magnetic toner using the same
- Publication number 20050227070
- Publication date Oct 13, 2005
- Toda Kogyo Corporation
- Hiroshi Akai
- H01 - BASIC ELECTRIC ELEMENTS