Grand Rapids, MI, United States of America

Portamaker, Inc.


USPTO Granted Patents = 2

Forward Citations = 13

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3 inventors (with patents filed for the assignee):

goldMedal Kristopher D Shumaker (2 out of 5 patents)

silverMedal Jeremy Clinton Stoddard (2 out of 10 patents)

bronzeMedal Steven James Leibrandt (2 out of 9 patents)


2 patents:

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USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#179 in Grand Rapids, MI

#3,186 in Michigan

#94,782 in US

Grand Rapids, MI (US)
Grand Rapids, MI, United States of America
Forward Citations = 13

3 inventors:

Please report any incorrect information to [email protected]
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