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Trademarks = 3

Forward Citations = 379

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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 47 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),

Photogen, Inc. is a leading provider of high-quality, customizable photo products for consumers and businesses. We offer a wide range of personalized photo gifts such as photo books, canvas prints, and calendars. Our easy-to-use online design tools make it simple for customers to create unique and memorable photo products. With a strong focus on innovation and customer satisfaction, Photogen, Inc. is dedicated to helping customers preserve and share their most cherished memories.

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Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

12 Patents

#24 in Knoxville, TN

#268 in Tennessee

#24,764 in US

#46,630 in the World

Knoxville, TN, United States of America

Photogen, Inc.