% Expired Patents = 8.3

Trademarks = 27

Forward Citations = 1,288

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3 inventors (with patents filed for the assignee):

John A Cadwell (8 out of 40 patents)

Richard A Villarreal (2 out of 21 patents)

Leonard H Ruff (2 out of 3 patents)

12 patents: Sort by Forward Citations

1. 7230688 - System and method for processing information in a pulse oximeter (2007-06-12),

2. 7072521 - System and method for the compression and quantitative measurement of movement from synchronous video (2006-07-04),

3. 6870109 - System and device for reducing signal interference in patient monitoring systems (2005-03-22),

4. 6805668 - System and method for processing patient polysomnograph data utilizing multiple neural network processing (2004-10-19),

5. 5631667 - Frequency and amplitude measurement tool for electronic displays (1997-05-20),

6. 5593429 - Needle electrode with depth of penetration limiter (1997-01-14),

7. 5566678 - Digital EEG noise synthesizer (1996-10-22),

8. 5482038 - Needle electrode assembly (1996-01-09),

9. 5116304 - Magnetic stimulator with skullcap-shaped coil (1992-05-26),

10. 5047005 - Method and apparatus for magnetically stimulating neurons (1991-09-10),

11. 4994015 - Magnetic stimulator coils (1991-02-19),

12. 4940453 - Method and apparatus for magnetically stimulating neurons (1990-07-10),

Company Overview

Cadwell Industries, Inc. is a prominent developer and manufacturer of advanced medical devices, specializing in neurodiagnostic and neuromonitoring technologies. The company focuses on creating innovative solutions for healthcare professionals, enhancing patient care through its comprehensive range of products. With a strong commitment to research and development, Cadwell aims to improve diagnostic capabilities and treatment outcomes in the field of neurology. Headquartered in Kennewick, Washington, Cadwell serves a global market with its cutting-edge technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

12 Patents

#4 in Kennewick, WA

#583 in Washington

#25,557 in US

#48,163 in the World

Kennewick, WA, United States of America

Cadwell Industries, Inc.

Forward Citations = 1,288

3 inventors:

John A Cadwell (8 out of 40 patents)

Richard A Villarreal (2 out of 21 patents)

Leonard H Ruff (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cadwell Industries, Inc.. Retrieved from https://idiyas.com/company/cadwell-industries

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]