Growing community of inventors

Minneapolis, MN, United States of America

John E Ziegenfuss

Average Co-Inventor Count = 3.75

ph-index = 2

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 = 50

John E Ziegenfuss ↔ Jeffrey A Zimmerman (1 patent)John E Ziegenfuss ↔ Gregory Kennedy (1 patent)John E Ziegenfuss ↔ David T Bardwell (1 patent)John E Ziegenfuss ↔ Jose A Castro (1 patent)John E Ziegenfuss ↔ Wesley F Chapman (1 patent)John E Ziegenfuss ↔ Jeffrey A Popowski (1 patent)John E ZiegenfussJohn E Ziegenfuss (2 patents)Jeffrey A ZimmermanJeffrey A Zimmerman (15 patents)Gregory KennedyGregory Kennedy (13 patents)David T BardwellDavid T Bardwell (9 patents)Jose A CastroJose A Castro (1 patent)Wesley F ChapmanWesley F Chapman (1 patent)Jeffrey A PopowskiJeffrey A Popowski (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ecowater Systems, Inc. (2 from 70 patents)


2 patents:

1. 6696963 - Method and system for anticipating salt depletion

2. D465546 - Water softener having a contoured and sloping lid

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idiyas.com
as of
12/25/2025
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