Masaaki Doi

Person

Shinagawa-ku, Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light source unit and wavelength stabilizing control method, exposu...
- Patent number 7,098,992
- Issue date Aug 29, 2006
- Nikon Corporation
- Tomoko Ohtsuki
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light source unit and light irradiation unit, and device manufactur...
- Patent number 6,894,826
- Issue date May 17, 2005
- Nikon Corporation
- Masaaki Doi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Optical waveguide device and optical microscope using the same
- Patent number 5,452,382
- Issue date Sep 19, 1995
- Nikon Corporation
- Takashi Shionoya
- G02 - OPTICS
Information Patent Grant
Optical waveguide with overlapping diffusion regions containing dif...
- Patent number 5,432,881
- Issue date Jul 11, 1995
- Nikon Corporation
- Masaaki Doi
- G02 - OPTICS
Information Patent Grant
Optical integrated device for magneto-optical reproducing head
- Patent number 5,293,291
- Issue date Mar 8, 1994
- Nikon Corporation
- Hiroshi Ohki
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical integrated device for a reproducing head for magneto-optica...
- Patent number H1233
- Issue date Sep 7, 1993
- Hiroshi Ohki
- 369 - Dynamic information storage or retrieval
Information Patent Grant
Optical waveguide device for polarization rotation
- Patent number 5,140,654
- Issue date Aug 18, 1992
- Nikon Corporation
- Hideki Akasaka
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Light source unit and light irradiation unit, and device manufactur...
- Publication number 20040160662
- Publication date Aug 19, 2004
- Nikon Corporation
- Masaaki Doi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Light source unit and wavelength stabilizing control method, exposu...
- Publication number 20040012844
- Publication date Jan 22, 2004
- Nikon Corporation
- Tomoko Ohtsuki
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Masaaki Doi

Person

Patents Grantslast 30 patents

Light source unit and wavelength stabilizing control method, exposu...

Light source unit and light irradiation unit, and device manufactur...

Optical waveguide device and optical microscope using the same

Optical waveguide with overlapping diffusion regions containing dif...

Optical integrated device for magneto-optical reproducing head

Optical integrated device for a reproducing head for magneto-optica...

Optical waveguide device for polarization rotation

Patents Applicationslast 30 patents

Light source unit and light irradiation unit, and device manufactur...

Light source unit and wavelength stabilizing control method, exposu...