Marlborough, MA, United States of America

Seprachem, Inc.


USPTO Granted Patents = 2

Forward Citations = 4

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3 inventors (with patents filed for the assignee):

goldMedal Charles M Zepp (2 out of 57 patents)

silverMedal Donald L Heefner (2 out of 13 patents)

bronzeMedal Richard F Rossi (2 out of 11 patents)


2 patents:

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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#84 in Marlborough, MA

#4,823 in Massachusetts

#92,598 in US

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Marlborough, MA, United States of America
Forward Citations = 4

3 inventors:

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