Toshikazu Segawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Reflection type diffuse hologram, hologram for reflection hologram...
- Patent number 7,215,451
- Issue date May 8, 2007
- Dai Nippon Printing Co., Ltd.
- Shingo Nishikawa
- G02 - OPTICS
Information Patent Grant
Method of making phase mask for machining optical fiber and optical...
- Patent number 6,795,614
- Issue date Sep 21, 2004
- Dai Nippon Printing Co., Ltd.
- Toshikazu Segawa
- G02 - OPTICS
Information Patent Grant
Reflection type diffuse hologram, hologram for reflection hologram...
- Patent number 6,667,819
- Issue date Dec 23, 2003
- Dai Nippon Printing Co., Ltd.
- Shingo Nishikawa
- G02 - OPTICS
Information Patent Grant
Method of producing phase mask for fabricating optical fiber and op...
- Patent number 6,466,714
- Issue date Oct 15, 2002
- Dai Nippon Printing Co., Ltd. and Nippon Telegraph and Telephone Corporation
- Masaaki Kurihara
- G02 - OPTICS
Information Patent Grant
Phase mask for processing optical fibers and method of manufacturin...
- Patent number 6,214,495
- Issue date Apr 10, 2001
- Dai Nippon Printing Co., Ltd.
- Toshikazu Segawa
- G02 - OPTICS
Information Patent Grant
Phase mask for manufacturing diffraction grating, and method of man...
- Patent number 6,200,711
- Issue date Mar 13, 2001
- Dai Nippon Printing Co., Ltd.
- Masaaki Kurihara
- G02 - OPTICS
Information Patent Grant
Molded articles using glass as substrate, such as holographic optic...
- Patent number 6,033,810
- Issue date Mar 7, 2000
- Dai Nippon Printing Co., Ltd.
- Yukio Taniguchi
- B32 - LAYERED PRODUCTS
Information Patent Grant
Molded relief hologram
- Patent number 5,543,228
- Issue date Aug 6, 1996
- Dai Nippon Printing Co., Ltd.
- Yukio Taniguchi
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
FOAMING ADHESIVE SHEET AND METHOD FOR PRODUCING PRODUCT
- Publication number 20230146040
- Publication date May 11, 2023
- DAI NIPPON PRINTING CO., LTD.
- Shinya SHIMADA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
REFLECTION TYPE DIFFUSE HOLOGRAM, HOLOGRAM FOR REFLECTION HOLOGRAM...
- Publication number 20070195391
- Publication date Aug 23, 2007
- DAI NIPPON PRINTING CO. , LTD.
- Shingo Nishikawa
- G02 - OPTICS
Information Patent Application
Method of making phase mask for machining optical fiber and optical...
- Publication number 20030006212
- Publication date Jan 9, 2003
- Toshikazu Segawa
- G02 - OPTICS
Information Patent Application
Reflection type diffuse hologram, hologram for reflection hologram...
- Publication number 20010053004
- Publication date Dec 20, 2001
- DAI NIPPON PRINTING CO. , LTD.
- Shingo Nishikawa
- G02 - OPTICS

Toshikazu Segawa

Person

Patents Grantslast 30 patents

Reflection type diffuse hologram, hologram for reflection hologram...

Method of making phase mask for machining optical fiber and optical...

Reflection type diffuse hologram, hologram for reflection hologram...

Method of producing phase mask for fabricating optical fiber and op...

Phase mask for processing optical fibers and method of manufacturin...

Phase mask for manufacturing diffraction grating, and method of man...

Molded articles using glass as substrate, such as holographic optic...

Molded relief hologram

Patents Applicationslast 30 patents

FOAMING ADHESIVE SHEET AND METHOD FOR PRODUCING PRODUCT

REFLECTION TYPE DIFFUSE HOLOGRAM, HOLOGRAM FOR REFLECTION HOLOGRAM...

Method of making phase mask for machining optical fiber and optical...

Reflection type diffuse hologram, hologram for reflection hologram...