Hiroaki Hanafusa

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Mito, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of fabricating a dielectric multilayer filter
- Patent number 5,332,535
- Issue date Jul 26, 1994
- Nippon Telegraph & Telephone Corporation
- Taisuke Oguchi
- G02 - OPTICS
Information Patent Grant
Dielectric multilayer, filter, manufacturing method therefor, and o...
- Patent number 5,234,772
- Issue date Aug 10, 1993
- Nippon Telegraph & Telephone Corporation
- Taisuke Oguchi
- G02 - OPTICS
Information Patent Grant
Wide-band optical fiber coupler and its manufacturing method
- Patent number 5,101,462
- Issue date Mar 31, 1992
- Japan Aviation Electronics Industry Limited
- Hiroyuki Sasaki
- G02 - OPTICS
Information Patent Grant
Wide-band optical fiber coupler and its manufacturing method
- Patent number 5,095,516
- Issue date Mar 10, 1992
- Japan Aviation Electronics Industry Limited
- Hiroyuki Sasaki
- G02 - OPTICS
Information Patent Grant
Method for the manufacture of an optical fiber coupler
- Patent number 5,009,478
- Issue date Apr 23, 1991
- Japan Aviation Electronics Industry Limited
- Hiroyuki Sasaki
- G02 - OPTICS
Information Patent Grant
Fiber coupler and method and apparatus for manufacturing the same
- Patent number 4,869,570
- Issue date Sep 26, 1989
- Nippon Telegraph & Telephone Corporation
- Itaru Yokohama
- G02 - OPTICS