Photogen, Inc.

Calculating rank

USPTO Granted Patents = 12

Trademarks = 3

Forward Citations = 384

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5 inventors (with patents filed for the assignee):

H Craig Dees (10 out of 31 patents)

Eric A Wachter (7 out of 48 patents)

Walter G Fisher (6 out of 17 patents)

4. John T Smolik (5 out of 13 patents)

5. Timothy C Scott (2 out of 31 patents)

12 patents: Sort by Forward Citations

1. 6541223 - Method for enhanced protein stabilization and for production of cell lines useful for production of such stabilized proteins (2003-04-01),

2. 6525862 - Methods and apparatus for optical imaging (2003-02-25),

3. 6519076 - Methods and apparatus for optical imaging (2003-02-11),

4. 6495360 - Method for enhanced protein stabilization and for production of cell lines useful for production of such stabilized proteins (2002-12-17),

5. 6493570 - Method for improved imaging and photodynamic therapy (2002-12-10),

6. 6468777 - Method for enhanced protein stabilization and for production of cell lines useful for production of such stabilized proteins (2002-10-22),

7. 6451597 - Method for enhanced protein stabilization and for production of cell lines useful for production of such stabilized proteins (2002-09-17),

8. 6331286 - Methods for high energy phototherapeutics (2001-12-18),

9. 6042603 - Method for improved selectivity in photo-activation of molecular agents (2000-03-28),

10. 5998597 - Method for improved selectivity in photo-activation of molecular agents (1999-12-07),

11. 5832931 - Method for improved selectivity in photo-activation and detection of (1998-11-10),

12. 5829448 - Method for improved selectivity in photo-activation of molecular agents (1998-11-03),

Company Overview

Photogen, Inc. is a technology company based in Knoxville, TN, specializing in advanced imaging solutions and photonics. The organization focuses on the development and manufacturing of innovative products that enhance visual experiences across various applications, including medical imaging, industrial inspection, and consumer electronics. With a commitment to research and development, Photogen aims to push the boundaries of optical technology, contributing to advancements in fields that rely on precise imaging and light manipulation.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

12 Patents

#22 in Knoxville, TN

#271 in Tennessee

#25,578 in US

#48,209 in the World

Knoxville, TN, United States of America

Photogen, Inc.

Forward Citations = 384

5 inventors:

H Craig Dees (10 out of 31 patents)

Eric A Wachter (7 out of 48 patents)

Walter G Fisher (6 out of 17 patents)

4. John T Smolik (5 out of 13 patents)

5. Timothy C Scott (2 out of 31 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Photogen, Inc.. Retrieved from https://idiyas.com/company/photogen

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]