Growing community of inventors

Redmond, WA, United States of America

David G Koon

Average Co-Inventor Count = 2.14

ph-index = 4

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 = 213

David G KoonPeter Joseph Junger (4 patents)David G KoonCassandra B Shoecraft (4 patents)David G KoonDavid G Koon (5 patents)Peter Joseph JungerPeter Joseph Junger (33 patents)Cassandra B ShoecraftCassandra B Shoecraft (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Nintendo of America Inc. (4 from 90 patents)

2. E2interactive, Inc. (1 from 78 patents)


5 patents:

1. 9292854 - Method and apparatus for enabling purchasers of products to obtain return information and to initiate product returns via an on-line network connection

2. 8635168 - Method and apparatus for enabling purchasers of products to obtain return information and to initiate product returns via an on-line network connection

3. 8156026 - Method and apparatus for enabling purchasers of products to obtain return information and to initiate product returns via an on-line network connection

4. 7797164 - Method and apparatus for enabling purchasers of products to obtain return information and to initiate product returns via an on-line network connection

5. 6947941 - Serial number mask and check digit for electronic registration system (ERS)

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as of
12/17/2025
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