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For the Inventor, By the Inventor

Tokyo, Japan

Qualitas Inc.


USPTO Granted Patents = 1

Forward Citations = 10

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2 inventors (with patents filed for the assignee):

goldMedal Minako Kaido (1 out of 1 patent)

silverMedal Kazuo Tsubota (1 out of 3 patents)


1 patent:

1. 7470026 - Method and apparatus for measuring operating visual acuity (2008-12-30),
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USPTO Data Jan 1 1976 - Jan 6 2026

1 Patents

#5,734 in Tokyo

#15,549 in Japan

...
Tokyo, Japan

Qualitas Inc.

Forward Citations = 10

2 inventors:

goldMedal Minako Kaido (1 out of 1 patent)

silverMedal Kazuo Tsubota (1 out of 3 patents)

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