Growing community of inventors

Richardson, TX, United States of America

John Michael Underbrink

Average Co-Inventor Count = 1.67

ph-index = 9

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 = 196

John Michael UnderbrinkPeter C Hill (4 patents)John Michael UnderbrinkRussell Lee Keeler (2 patents)John Michael UnderbrinkRussell L Keeler (2 patents)John Michael UnderbrinkBrian D Lovgren (2 patents)John Michael UnderbrinkZhihong Fu (1 patent)John Michael UnderbrinkDaniel York (1 patent)John Michael UnderbrinkPeng Li (1 patent)John Michael UnderbrinkCharlene Underbrink, Legal Representative (1 patent)John Michael UnderbrinkPaul J Danforth (1 patent)John Michael UnderbrinkJoshua Rothacker (1 patent)John Michael UnderbrinkKean-Tuan Tan (1 patent)John Michael UnderbrinkPaul Danforth (1 patent)John Michael UnderbrinkJohn Michael Underbrink (16 patents)Peter C HillPeter C Hill (21 patents)Russell Lee KeelerRussell Lee Keeler (2 patents)Russell L KeelerRussell L Keeler (2 patents)Brian D LovgrenBrian D Lovgren (2 patents)Zhihong FuZhihong Fu (5 patents)Daniel YorkDaniel York (2 patents)Peng LiPeng Li (2 patents)Charlene Underbrink, Legal RepresentativeCharlene Underbrink, Legal Representative (1 patent)Paul J DanforthPaul J Danforth (1 patent)Joshua RothackerJoshua Rothacker (1 patent)Kean-Tuan TanKean-Tuan Tan (1 patent)Paul DanforthPaul Danforth (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Spang & Company (6 from 23 patents)

2. Bigtoys, Inc. (3 from 3 patents)

3. Today's Gear, Inc. (2 from 2 patents)

4. Kompan, Inc. (2 from 2 patents)

5. Playcore Wisconsin, Inc. (1 from 74 patents)

6. Easco Hand Tools, Inc. (1 from 74 patents)

7. Northwest Design Products (1 from 2 patents)


16 patents:

1. 8062142 - Collaborative play toy

2. 7222557 - Ratcheting tool driver

3. 7159252 - Folding sink

4. 7118514 - Playground equipment

5. D504000 - Portable sink with foldable faucet

6. D489155 - Outdoor station with sink and foldable faucet

7. 6611972 - Sink with foldable faucet assembly and multiple-purpose support structure

8. D474900 - Convertible table and easel

9. D461941 - Serving cart with sink and foldable faucet

10. D461880 - Wall-mounted sink with foldable faucet

11. D426586 - Toy beauty center

12. 6044766 - Playground carriage

13. 5816167 - Playground carriage

14. 5468199 - Sliding-handgrip amusement apparatus

15. 5443012 - Playground carriage

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as of
12/20/2025
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