Growing community of inventors

Ankeny, IA, United States of America

Doug Drenten

Average Co-Inventor Count = 11.16

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 = 45

Doug DrentenJeffrey T DeBord (8 patents)Doug DrentenMichael T Kopczewski (8 patents)Doug DrentenKenneth C Boyle (8 patents)Doug DrentenKeith Hobart Gausmann (8 patents)Doug DrentenRobert Brueckner (8 patents)Doug DrentenGary Petersen (8 patents)Doug DrentenPaul E Hsu (5 patents)Doug DrentenKristi Lafrenz (4 patents)Doug DrentenSally Stark (4 patents)Doug DrentenJohn C Thomas (3 patents)Doug DrentenSamuel Joseph Marino (3 patents)Doug DrentenFred Lowery (3 patents)Doug DrentenDouglas C Huffer (3 patents)Doug DrentenJay F Perkins (2 patents)Doug DrentenRobert J Hayes (2 patents)Doug DrentenGary Schmitz (2 patents)Doug DrentenKristi R Lafrenz (1 patent)Doug DrentenSally A Stark (1 patent)Doug DrentenJay F Perkins (1 patent)Doug DrentenDoug Drenten (8 patents)Jeffrey T DeBordJeffrey T DeBord (87 patents)Michael T KopczewskiMichael T Kopczewski (38 patents)Kenneth C BoyleKenneth C Boyle (15 patents)Keith Hobart GausmannKeith Hobart Gausmann (11 patents)Robert BruecknerRobert Brueckner (9 patents)Gary PetersenGary Petersen (9 patents)Paul E HsuPaul E Hsu (44 patents)Kristi LafrenzKristi Lafrenz (4 patents)Sally StarkSally Stark (4 patents)John C ThomasJohn C Thomas (9 patents)Samuel Joseph MarinoSamuel Joseph Marino (4 patents)Fred LoweryFred Lowery (4 patents)Douglas C HufferDouglas C Huffer (3 patents)Jay F PerkinsJay F Perkins (82 patents)Robert J HayesRobert J Hayes (9 patents)Gary SchmitzGary Schmitz (2 patents)Kristi R LafrenzKristi R Lafrenz (2 patents)Sally A StarkSally A Stark (2 patents)Jay F PerkinsJay F Perkins (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Maytag Corporation (6 from 741 patents)

2. Whirlpool Corporation (1 from 5,951 patents)


8 patents:

1. 7351939 - Toaster

2. D524089 - Toaster

3. D524088 - Toaster and base

4. D523904 - Vending machine

5. D521306 - Toaster

6. D509404 - Lever for a toaster

7. D509251 - Vending machine

8. D503743 - Vending machine and stand

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idiyas.com
as of
12/28/2025
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