Forward Citations = 61

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5 inventors (with patents filed for the assignee):

John James (1 out of 4 patents)

Joseph C Wu (1 out of 4 patents)

Calvin W Eckels, Jr (1 out of 1 patent)

4. Clyde R Walsworth (1 out of 1 patent)

5. Calvin Eckels (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 4392248 - Attention signal receiver for emergency broadcast systems (1983-07-05),

2. 4027332 - Apparatus for monitoring television receivers (1977-05-31),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#740 in Santa Clara, CA

#21,008 in California

#94,841 in US

Santa Clara, CA, United States of America

Time and Frequency Technology Inc.

Forward Citations = 61

5 inventors:

John James (1 out of 4 patents)

Joseph C Wu (1 out of 4 patents)

Calvin W Eckels, Jr (1 out of 1 patent)

4. Clyde R Walsworth (1 out of 1 patent)

5. Calvin Eckels (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Time and Frequency Technology Inc.. Retrieved from https://idiyas.com/company/time-and-frequency-technology

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]