For the Inventor, By the Inventor

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Rosemont, IL, United States of America

Comdisco, Inc.

USPTO Granted Patents = 2

Forward Citations = 134

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5 inventors (with patents filed for the assignee):

David F Baretich (2 out of 10 patents)

Mark B Roberts (2 out of 3 patents)

William R Kallman (2 out of 6 patents)

4. Leonard M Dorfman (2 out of 4 patents)

5. John F Ahern (2 out of 3 patents)

2 patents: Sort by Forward Citations

1. 5455638 - Electrochromic eyewear (1995-10-03),

2. 5455637 - Electrochromic eyewear system, rechargeable eyewear and external charger (1995-10-03),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#20 in Rosemont, IL

#4,308 in Illinois

#92,697 in US

Rosemont, IL, United States of America

Comdisco, Inc.

Forward Citations = 134

5 inventors:

David F Baretich (2 out of 10 patents)

Mark B Roberts (2 out of 3 patents)

William R Kallman (2 out of 6 patents)

4. Leonard M Dorfman (2 out of 4 patents)

5. John F Ahern (2 out of 3 patents)

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