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For the Inventor, By the Inventor

Hudsonville, MI, United States of America

Royal Technologies Corporation


USPTO Granted Patents = 2

% Expired Patents = 100.0

Trademarks = 1

Forward Citations = 2

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2 inventors (with patents filed for the assignee):

goldMedal James Henry Baas (2 out of 3 patents)

silverMedal Wesley D Mersman (1 out of 11 patents)


2 patents:

1. 9173499 - Adjustable armrest apparatus (2015-11-03),
2. 9155392 - Castor apparatus for a chair base and a chair base with a castor apparatus (2015-10-13),
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USPTO Data Jan 1 1976 - Sep 22 2026

2 Patents

#5 in Hudsonville, MI

#3,186 in Michigan

#94,648 in US

Hudsonville, MI (US)
Hudsonville, MI, United States of America

Royal Technologies Corporation

Forward Citations = 2

2 inventors:

goldMedal James Henry Baas (2 out of 3 patents)

silverMedal Wesley D Mersman (1 out of 11 patents)

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