Growing community of inventors

Savage, MN, United States of America

Trygve David Peterson

Average Co-Inventor Count = 1.09

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 83

Trygve David PetersonJon A Holmes (1 patent)Trygve David PetersonRicky J Madsen (1 patent)Trygve David PetersonTrygve David Peterson (8 patents)Jon A HolmesJon A Holmes (14 patents)Ricky J MadsenRicky J Madsen (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shutterfly, Inc. (3 from 198 patents)

2. Lifetouch Inc. (3 from 30 patents)

3. Lifetouch National School Studios, Inc. (1 from 6 patents)

4. Lifetouch National School Studies Inc. (1 from 1 patent)


8 patents:

1. D905151 - Photographic lighting apparatus

2. D884777 - Photographic lighting apparatus

3. 10642128 - Edge light device for photography system

4. D852260 - Photographic lighting apparatus

5. 10274811 - Edge light device for photography system

6. 9353928 - Reflective lighting system

7. 6411778 - Portable backlit studio

8. 6081670 - Depth-of-field indicator for a camera

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as of
12/18/2025
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