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For the Inventor, By the Inventor

Salem, MA, United States of America

Gt Crystal Systems, LLC


USPTO Granted Patents = 3

Trademarks = 1

Forward Citations = 13

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3 inventors (with patents filed for the assignee):

goldMedal Frederick Schmid (3 out of 27 patents)

silverMedal David B Joyce (3 out of 7 patents)

bronzeMedal Chandra P Khattak (2 out of 18 patents)


3 patents:

1. 8329133 - Method and apparatus for refining metallurgical grade silicon to produce solar grade silicon (2012-12-11),
2. 8177910 - System and method for crystal growing (2012-05-15),
3. 7918936 - System and method for crystal growing (2011-04-05),
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USPTO Data Jan 1 1976 - Sep 29 2026

3 Patents

#9 in Salem, MA

#3,960 in Massachusetts

#73,766 in US

Salem, MA (US)
Salem, MA, United States of America

Gt Crystal Systems, LLC

Forward Citations = 13

3 inventors:

goldMedal Frederick Schmid (3 out of 27 patents)

silverMedal David B Joyce (3 out of 7 patents)

bronzeMedal Chandra P Khattak (2 out of 18 patents)

Please report any incorrect information to [email protected]
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