Growing community of inventors

West Des Moines, IA, United States of America

Louis Brian Chapko

Average Co-Inventor Count = 2.17

ph-index = 6

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 = 109

Louis Brian ChapkoTodd Elliott Piper (6 patents)Louis Brian ChapkoEdwin Michael Grote (2 patents)Louis Brian ChapkoDonald E Westerhof (2 patents)Louis Brian ChapkoLori Lisa Carrigan (1 patent)Louis Brian ChapkoThomas Craig Kevern (1 patent)Louis Brian ChapkoSteven Paul King (1 patent)Louis Brian ChapkoJoseph Kevin Gogerty (1 patent)Louis Brian ChapkoMichael Adam Chandler (1 patent)Louis Brian ChapkoJulia Xiuling Zhang (1 patent)Louis Brian ChapkoLori Karyn Scott (1 patent)Louis Brian ChapkoDavid S Ertl (1 patent)Louis Brian ChapkoSamuel Gregg Fullerton (1 patent)Louis Brian ChapkoLouis Brian Chapko (13 patents)Todd Elliott PiperTodd Elliott Piper (129 patents)Edwin Michael GroteEdwin Michael Grote (214 patents)Donald E WesterhofDonald E Westerhof (2 patents)Lori Lisa CarriganLori Lisa Carrigan (180 patents)Thomas Craig KevernThomas Craig Kevern (139 patents)Steven Paul KingSteven Paul King (121 patents)Joseph Kevin GogertyJoseph Kevin Gogerty (120 patents)Michael Adam ChandlerMichael Adam Chandler (73 patents)Julia Xiuling ZhangJulia Xiuling Zhang (62 patents)Lori Karyn ScottLori Karyn Scott (49 patents)David S ErtlDavid S Ertl (15 patents)Samuel Gregg FullertonSamuel Gregg Fullerton (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pioneer Hi-bred International, Inc. (13 from 6,595 patents)


13 patents:

1. 9955641 - Maize hybrid X95H700

2. 9894867 - Maize hybrid X00H389

3. 9872477 - Maize hybrid X80H133

4. 7294774 - Inbred maize line PHBAB

5. 7270380 - Inbred maize line PH7JB

6. 7214864 - Inbred maize line PH7JD

7. 6969788 - Inbred maize line PHBAB

8. 6740796 - Inbred maize line PH7JB

9. 6080919 - Inbred maize line PH1GG

10. 6077998 - Hybrid maize plant and seed 35B26

11. 5948957 - Inbred maize line PH19V

12. 5731494 - Hybrid maize plant and seed (3820)

13. 5569818 - Inbred maize line phap8

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as of
12/18/2025
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