% Expired Patents = 44.4

Forward Citations = 175

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7 inventors (with patents filed for the assignee):

L Michael Cutrer (9 out of 16 patents)

Dan Kalas (2 out of 2 patents)

Fredrick Winch (1 out of 4 patents)

4. David Bossi (1 out of 4 patents)

5. Joe Wong (1 out of 2 patents)

6. Richard A Terwilliger (1 out of 36 patents)

7. Jack Webb (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 7357770 - Expandable brachytherapy device with constant radiation source spacing (2008-04-15),

2. 6881183 - Radioactive seed with multiple markers and method for using same (2005-04-19),

3. 6787786 - Thin radiation source and method of making the same (2004-09-07),

4. 6755775 - Apparatus and method for loading a brachytherapy seed cartridge (2004-06-29),

5. 6638207 - Radioactive seed with multiple markers and method for using same (2003-10-28),

6. 6503186 - Radioactive seed with multiple markers and method for using same (2003-01-07),

7. 6440058 - Radioactive seeds and method for using same (2002-08-27),

8. 5997463 - Laser welded brachytherapy source and method of making the same (1999-12-07),

9. 5647374 - Needle for imaging and sampling (1997-07-15),

Company Overview

North American Scientific, Inc. is a leading provider of medical devices and equipment. With a focus on innovation and quality, we develop cutting-edge solutions for healthcare professionals. Our products range from diagnostic tools to surgical instruments, catering to a wide range of medical specialties. With a commitment to excellence, we strive to improve patient outcomes and enhance the practice of medicine.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

9 Patents

#41 in Chatsworth, CA

#7,745 in California

#32,605 in US

Chatsworth, CA, United States of America

North American Scientific, Inc.

Forward Citations = 175

7 inventors:

L Michael Cutrer (9 out of 16 patents)

Dan Kalas (2 out of 2 patents)

Fredrick Winch (1 out of 4 patents)

4. David Bossi (1 out of 4 patents)

5. Joe Wong (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: North American Scientific, Inc.. Retrieved from https://idiyas.com/company/north-american-scientific

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]