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For the Inventor, By the Inventor

Newton Center, MA, United States of America

Zero Discharge, LLC


USPTO Granted Patents = 2


Trademarks = 1

Forward Citations = 1

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4 inventors (with patents filed for the assignee):

goldMedal David D Calhoun (2 out of 2 patents)

silverMedal Mark D Lorusso (2 out of 12 patents)

bronzeMedal R Edward Rose, Jr (2 out of 8 patents)

4.  Ernest M Hawkesworth (1 out of 1 patent)

5.  R Rose (0 patent)


2 patents:

1. 11897787 - Zero discharge water treatment apparatus and method (2024-02-13),
2. 11390545 - Zero discharge water treatment apparatus and method (2022-07-19),
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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#2 in Newton Center, MA

#4,821 in Massachusetts

#92,554 in US

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Newton Center, MA, United States of America

Zero Discharge, LLC

Forward Citations = 1

4 inventors:

goldMedal David D Calhoun (2 out of 2 patents)

silverMedal Mark D Lorusso (2 out of 12 patents)

bronzeMedal R Edward Rose, Jr (2 out of 8 patents)

4.  Ernest M Hawkesworth (1 out of 1 patent)

5.  R Rose (0 patent)

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