Growing community of inventors

Canton, OH, United States of America

David C Kumpf

Average Co-Inventor Count = 5.54

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 = 27

David C KumpfErik D Lesco (2 patents)David C KumpfJerry L Balzer (2 patents)David C KumpfJackson William Wegelin (1 patent)David C KumpfWilliam G Alford (1 patent)David C KumpfEdgar A Maurer (1 patent)David C KumpfGreg A Bilek (1 patent)David C KumpfDavid M Allgeier (1 patent)David C KumpfDavid P Parks (1 patent)David C KumpfJoseph A Garisto (1 patent)David C KumpfDavid C Kumpf (2 patents)Erik D LescoErik D Lesco (9 patents)Jerry L BalzerJerry L Balzer (4 patents)Jackson William WegelinJackson William Wegelin (117 patents)William G AlfordWilliam G Alford (32 patents)Edgar A MaurerEdgar A Maurer (26 patents)Greg A BilekGreg A Bilek (16 patents)David M AllgeierDavid M Allgeier (6 patents)David P ParksDavid P Parks (3 patents)Joseph A GaristoJoseph A Garisto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,680 patents)

2. The Hoover Comapny (1 from 429 patents)


2 patents:

1. 7360275 - Dirt separation system for a vacuum cleaner

2. 6875255 - Removable dirt separation system for a vacuum cleaner

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12/7/2025
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