For the Inventor, By the Inventor

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Pittsburgh, PA, United States of America

Chemdaq Inc.

USPTO Granted Patents = 2

Trademarks = 7

Forward Citations = 9

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5 inventors (with patents filed for the assignee):

P Richard Warburton (1 out of 18 patents)

William Nelko (1 out of 1 patent)

David M Hilliker (1 out of 1 patent)

4. Matthew D Sass (1 out of 1 patent)

5. Joseph H Spiegel (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. D862260 - Gas monitor and remote display (2019-10-08),

2. D558622 - Gas monitor and remote display (2008-01-01),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#435 in Pittsburgh, PA

#3,356 in Pennsylvania

#92,697 in US

Pittsburgh, PA, United States of America

Chemdaq Inc.

Forward Citations = 9

5 inventors:

P Richard Warburton (1 out of 18 patents)

William Nelko (1 out of 1 patent)

David M Hilliker (1 out of 1 patent)

4. Matthew D Sass (1 out of 1 patent)

5. Joseph H Spiegel (1 out of 1 patent)

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