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For the Inventor, By the Inventor

Tokyo, Japan

Ashai Optical Co., Ltd.


USPTO Granted Patents = 2

Forward Citations = 11

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2 inventors (with patents filed for the assignee):

goldMedal Taizo Saito (1 out of 10 patents)

silverMedal Junji Umetsu (1 out of 10 patents)


2 patents:

1. 4600278 - Lens cap (1986-07-15),
2. 4455723 - Removable coupling device between a photographic camera and an accessory (1984-06-26),
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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#4,066 in Tokyo

#10,973 in Japan

...
Tokyo, Japan

Ashai Optical Co., Ltd.

Forward Citations = 11

2 inventors:

goldMedal Taizo Saito (1 out of 10 patents)

silverMedal Junji Umetsu (1 out of 10 patents)

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