Ryo Iwai

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Ohtake-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Black magnetic iron oxide particles, magnetic carrier for electroph...
- Patent number 9,285,698
- Issue date Mar 15, 2016
- Toda Kogyo Corporation
- Shinji Uemoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Black magnetic iron oxide particles
- Patent number 8,545,713
- Issue date Oct 1, 2013
- Toda Kogyo Corporation
- Ryo Iwai
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Black magnetic iron oxide particles having a specific dissolution o...
- Patent number 7,597,958
- Issue date Oct 6, 2009
- Toda Kogyo Corporation
- Shinji Uemoto
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Black magnetic iron oxide particles having high breakdown voltage
- Patent number 7,572,505
- Issue date Aug 11, 2009
- Toda Kogyo Corporation
- Naoki Uchida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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

Patents Applicationslast 30 patents

Information Patent Application
BLACK MAGNETIC IRON OXIDE PARTICLES
- Publication number 20120064449
- Publication date Mar 15, 2012
- Ryo Iwai
- B82 - NANO-TECHNOLOGY
Information Patent Application
BLACK MAGNETIC IRON OXIDE PARTICLES, MAGNETIC CARRIER FOR ELECTROPH...
- Publication number 20090311617
- Publication date Dec 17, 2009
- TODA KOGYO CORPORATION
- Shinji Uemoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Black magnetic iron oxide particles
- Publication number 20080206566
- Publication date Aug 28, 2008
- Toda Kogyo Corporation
- Shinji Uemoto
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Black magnetic iron oxide particles
- Publication number 20070254157
- Publication date Nov 1, 2007
- Toda Kogyo Corporation
- Naoki Uchida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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