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For the Inventor, By the Inventor

Osaka, Japan

Osaka Lead Refinery Co., Ltd.


USPTO Granted Patents = 1

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

goldMedal Takeo Oki (1 out of 9 patents)

silverMedal Isao Hiraki (1 out of 1 patent)


1 patent:

1. 4409072 - Method of collecting lead from ashes containing lead compounds (1983-10-11),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#1,488 in Osaka

#15,539 in Japan

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Osaka, Japan

Osaka Lead Refinery Co., Ltd.

Forward Citations = 0

2 inventors:

goldMedal Takeo Oki (1 out of 9 patents)

silverMedal Isao Hiraki (1 out of 1 patent)

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