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Dai Nippon Printing Co., Ltd. and Nippon Telegraph and Telephone Corporation

USPTO Granted Patents = 1

Forward Citations = 0

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4 inventors (with patents filed for the assignee):

Masataka Nakazawa (1 out of 17 patents)

Masaaki Kurihara (1 out of 20 patents)

Toshikazu Segawa (1 out of 8 patents)

4. Tetsuro Komukai (1 out of 5 patents)

1 patent: Sort by Forward Citations

1. 6466714 - Method of producing phase mask for fabricating optical fiber and optical fiber with bragg's diffraction grating produced by using the phase mask (2002-10-15),

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USPTO Data Jan 1 1976 - Dec 30 2025

1 Patents

#5,730 in Tokyo

#15,542 in Japan

Dai Nippon Printing Co., Ltd. and Nippon Telegraph and Telephone Corporation

Forward Citations = 0

4 inventors:

Masataka Nakazawa (1 out of 17 patents)

Masaaki Kurihara (1 out of 20 patents)

Toshikazu Segawa (1 out of 8 patents)

4. Tetsuro Komukai (1 out of 5 patents)

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