For the Inventor, By the Inventor

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Everett, WA, United States of America

Andgar Corporation

USPTO Granted Patents = 3

Forward Citations = 14

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5 inventors (with patents filed for the assignee):

Stephen W Dvorak (3 out of 16 patents)

Quanbao Zhao (3 out of 4 patents)

Shulin Chen (3 out of 12 patents)

4. Craig Frear (3 out of 10 patents)

5. Bryan J VanLoo (3 out of 3 patents)

3 patents: Sort by Forward Citations

1. 12209026 - Nutrient recovery systems and methods (2025-01-28),

2. 10556804 - Nutrient recovery systems and methods (2020-02-11),

3. 8613894 - Nutrient recovery systems and methods (2013-12-24),

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USPTO Data Jan 1 1976 - Sep 15 2026

3 Patents

#30 in Everett, WA

#1,811 in Washington

#73,741 in US

Everett, WA, United States of America

Andgar Corporation

Forward Citations = 14

5 inventors:

Stephen W Dvorak (3 out of 16 patents)

Quanbao Zhao (3 out of 4 patents)

Shulin Chen (3 out of 12 patents)

4. Craig Frear (3 out of 10 patents)

5. Bryan J VanLoo (3 out of 3 patents)

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