For the Inventor, By the Inventor

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Toa Kabushiki Kaisha/toa Corporation

USPTO Granted Patents = 3

Forward Citations = 52

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7 inventors (with patents filed for the assignee):

Shin Azumi (1 out of 10 patents)

Ken Iwayama (1 out of 7 patents)

Herbert H Pfeifer (1 out of 39 patents)

4. Shoji Ito (1 out of 1 patent)

5. Hirohiko Yukimoto (1 out of 1 patent)

6. Kaoru Matsuda (1 out of 1 patent)

7. Narumi Tada (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. D531986 - Loudspeaker housing (2006-11-14),

2. D522998 - Amplifier housing (2006-06-13),

3. D327065 - Telephone set (1992-06-16),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#44 in Kobe

#8,767 in Japan

Toa Kabushiki Kaisha/toa Corporation

Forward Citations = 52

7 inventors:

Shin Azumi (1 out of 10 patents)

Ken Iwayama (1 out of 7 patents)

Herbert H Pfeifer (1 out of 39 patents)

4. Shoji Ito (1 out of 1 patent)

5. Hirohiko Yukimoto (1 out of 1 patent)

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