% Expired Patents = 50.0

Forward Citations = 10

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5 inventors (with patents filed for the assignee):

Chung-Chiun Liu (2 out of 20 patents)

Laurie Dudik (2 out of 8 patents)

Meijun Shao (1 out of 1 patent)

4. Bonnie Gurry (1 out of 1 patent)

5. Ann Lai (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6740225 - Method for determining the amount of chlorine and bromine in water (2004-05-25),

2. 6623620 - Method for detecting or monitoring sulfur dioxide with an electrochemical sensor (2003-09-23),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#8 in Shaker Heights, OH

#3,641 in Ohio

#94,841 in US

Shaker Heights, OH, United States of America

Hathaway Brown School

Forward Citations = 10

5 inventors:

Chung-Chiun Liu (2 out of 20 patents)

Laurie Dudik (2 out of 8 patents)

Meijun Shao (1 out of 1 patent)

4. Bonnie Gurry (1 out of 1 patent)

5. Ann Lai (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hathaway Brown School. Retrieved from https://idiyas.com/company/hathaway-brown-school

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]