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For the Inventor, By the Inventor

KR

Environmental Management Corporation


USPTO Granted Patents = 3

% Expired Patents = 100.0

Trademarks = 2

Forward Citations = 5

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8 inventors (with patents filed for the assignee):

goldMedal Jung-Pil Kwak (1 out of 1 patent)

silverMedal Wook Hyeon (1 out of 1 patent)

bronzeMedal Hong Soo Oh (1 out of 1 patent)

4.  Kyeong Joo Na (1 out of 1 patent)

5.  Robert Walter Pieper, Jr (1 out of 1 patent)

6.  Kyeong Sun Jeong (1 out of 1 patent)

7.  Yoo Jong Kim (1 out of 1 patent)

8.  David B Mitchell (1 out of 14 patents)


3 patents:

1. 8379211 - Apparatus for sensing precipitation density of sludge in waste water treatment tank and method therefor (2013-02-19),
2. 8075779 - Water treatment (2011-12-13),
3. 7081575 - Musical instrument with detachable neck (2006-07-25),
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USPTO Data Jan 1 1976 - Sep 22 2026

3 Patents

#139 in

#2,782 in South Korea

KR
KR

Environmental Management Corporation

Forward Citations = 5

8 inventors:

goldMedal Jung-Pil Kwak (1 out of 1 patent)

silverMedal Wook Hyeon (1 out of 1 patent)

bronzeMedal Hong Soo Oh (1 out of 1 patent)

4.  Kyeong Joo Na (1 out of 1 patent)

5.  Robert Walter Pieper, Jr (1 out of 1 patent)

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