% Expired Patents = 33.3

Forward Citations = 7

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3 inventors (with patents filed for the assignee):

Gregory L Schaffer (1 out of 18 patents)

SanHwa Chee (1 out of 1 patent)

M Jeroen Fonderie (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 8618848 - Clock generator with comparator error compensation (2013-12-31),

2. 8581569 - Supply independent current reference generator in CMOS technology (2013-11-12),

3. 8487697 - Fully differential autozeroing amplifier (2013-07-16),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#168 in Milpitas, CA

#16,858 in California

#73,860 in US

Milpitas, CA, United States of America

Touchstone Semiconductor, Inc.

Forward Citations = 7

3 inventors:

Gregory L Schaffer (1 out of 18 patents)

SanHwa Chee (1 out of 1 patent)

M Jeroen Fonderie (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Touchstone Semiconductor, Inc.. Retrieved from https://idiyas.com/company/touchstone-semiconductor

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]