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For the Inventor, By the Inventor

Tokyo, Japan

Ryoka Techono Engineering & Construction Co.


USPTO Granted Patents = 1

Forward Citations = 6

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1 inventor (with patents filed for the assignee):

goldMedal Hirokazu Akamatsu (1 out of 3 patents)


1 patent:

1. 4934928 - Rotating-drum heat treatment apparatus (1990-06-19),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#5,755 in Tokyo

#15,596 in Japan

...
Tokyo, Japan

Ryoka Techono Engineering & Construction Co.

Forward Citations = 6

1 inventor:

goldMedal Hirokazu Akamatsu (1 out of 3 patents)

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