Yoshiyuki Asahara

Person

Mizuho, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for producing buried wave guide device
- Patent number 5,125,944
- Issue date Jun 30, 1992
- Hoya Corporation
- Yoshiyuki Asahara
- G02 - OPTICS
Information Patent Grant
Process for producing glass doped with dispersed microcrystallites
- Patent number 5,122,178
- Issue date Jun 16, 1992
- Hoya Corporation
- Shigeaki Omi
- G02 - OPTICS
Information Patent Grant
Process for producing buried waveguide device
- Patent number 5,078,772
- Issue date Jan 7, 1992
- Hoya Corporation
- Yoshiyuki Asahara
- G02 - OPTICS
Information Patent Grant
Process for producing glass doped with dispersed mirocrystallites
- Patent number 5,043,003
- Issue date Aug 27, 1991
- Hoya Corporation
- Shigeaki Omi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of producing gradient-index lens
- Patent number 4,902,330
- Issue date Feb 20, 1990
- Hoya Corporation
- Hiroyuki Sakai
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for producing optical glass
- Patent number 4,851,024
- Issue date Jul 25, 1989
- Hoya Corporation
- Hiroyuki Sakai
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of adjusting refractive index distribution lenses
- Patent number 4,844,724
- Issue date Jul 4, 1989
- Hoya Corporation
- Hiroyuki Sakai
- G02 - OPTICS
Information Patent Grant
Lenses having plural contiguous refractive index distribution subst...
- Patent number 4,844,589
- Issue date Jul 4, 1989
- Hoya Corporation
- Yoshiyuki Asahara
- G02 - OPTICS
Information Patent Grant
Gradient refractive index type anamorphic planar microlens and meth...
- Patent number 4,805,997
- Issue date Feb 21, 1989
- Hoya Corporation
- Yoshiyuki Asahara
- G02 - OPTICS
Information Patent Grant
Process for producing transparent glass product having refractive i...
- Patent number 4,767,435
- Issue date Aug 30, 1988
- Hoya Corporation
- Shigeaki Omi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for producing glass product having gradient of refractive i...
- Patent number 4,640,699
- Issue date Feb 3, 1987
- Hoya Corporation
- Shigeaki Ohmi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for the production of slab-shaped lens having gradient of r...
- Patent number 4,563,205
- Issue date Jan 7, 1986
- Hoya Corporation
- Yoshiyuki Asahara
- G02 - OPTICS
Information Patent Grant
Process for producing glass product having gradient of refractive i...
- Patent number 4,525,189
- Issue date Jun 25, 1985
- Hoya Corporation
- Shigeaki Ohmi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Faraday rotation glass
- Patent number 4,415,464
- Issue date Nov 15, 1983
- Hoya Corporation
- Yoshiyuki Asahara
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Faraday rotation glass
- Patent number 4,165,989
- Issue date Aug 28, 1979
- Hoya Corporation
- Yoshiyuki Asahara
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process of producing soft aperture filter
- Patent number 4,108,621
- Issue date Aug 22, 1978
- Hoya Glass Works, Ltd.
- Yoshiyuki Asahara
- G02 - OPTICS

Yoshiyuki Asahara

Person

Patents Grantslast 30 patents

Process for producing buried wave guide device

Process for producing glass doped with dispersed microcrystallites

Process for producing buried waveguide device

Process for producing glass doped with dispersed mirocrystallites

Method of producing gradient-index lens

Process for producing optical glass

Method of adjusting refractive index distribution lenses

Lenses having plural contiguous refractive index distribution subst...

Gradient refractive index type anamorphic planar microlens and meth...

Process for producing transparent glass product having refractive i...

Process for producing glass product having gradient of refractive i...

Process for the production of slab-shaped lens having gradient of r...

Process for producing glass product having gradient of refractive i...

Faraday rotation glass

Faraday rotation glass

Process of producing soft aperture filter