Growing community of inventors

Waverly, IA, United States of America

Steven Frederick Kohagen

Average Co-Inventor Count = 3.27

ph-index = 16

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 = 808

Steven Frederick KohagenFred P Ritchie (6 patents)Steven Frederick KohagenMichael Edward Hay (6 patents)Steven Frederick KohagenRamon L Klemmensen (5 patents)Steven Frederick KohagenRobert J Mehmen (4 patents)Steven Frederick KohagenFranco Fabio Daino (4 patents)Steven Frederick KohagenSimon Yan (4 patents)Steven Frederick KohagenGreg Jon Holcomb (4 patents)Steven Frederick KohagenKent Charles Johnson (4 patents)Steven Frederick KohagenMatthew J Sallee (4 patents)Steven Frederick KohagenBradley M White (4 patents)Steven Frederick KohagenCarl E Hoffmeyer (4 patents)Steven Frederick KohagenJim Hand (3 patents)Steven Frederick KohagenGreg Holderfield (3 patents)Steven Frederick KohagenEric Hyman (3 patents)Steven Frederick KohagenNicole E Freeberg (3 patents)Steven Frederick KohagenFred Philip Ritchie (2 patents)Steven Frederick KohagenDeonna Jene Fritz (2 patents)Steven Frederick KohagenGregory Jon Holcomb (1 patent)Steven Frederick KohagenRamon L Kemmensen (1 patent)Steven Frederick KohagenSteven Frederick Kohagen (23 patents)Fred P RitchieFred P Ritchie (13 patents)Michael Edward HayMichael Edward Hay (10 patents)Ramon L KlemmensenRamon L Klemmensen (8 patents)Robert J MehmenRobert J Mehmen (26 patents)Franco Fabio DainoFranco Fabio Daino (18 patents)Simon YanSimon Yan (12 patents)Greg Jon HolcombGreg Jon Holcomb (5 patents)Kent Charles JohnsonKent Charles Johnson (5 patents)Matthew J SalleeMatthew J Sallee (4 patents)Bradley M WhiteBradley M White (4 patents)Carl E HoffmeyerCarl E Hoffmeyer (4 patents)Jim HandJim Hand (32 patents)Greg HolderfieldGreg Holderfield (18 patents)Eric HymanEric Hyman (15 patents)Nicole E FreebergNicole E Freeberg (3 patents)Fred Philip RitchieFred Philip Ritchie (9 patents)Deonna Jene FritzDeonna Jene Fritz (2 patents)Gregory Jon HolcombGregory Jon Holcomb (12 patents)Ramon L KemmensenRamon L Kemmensen (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Waterloo Industries, Inc. (20 from 110 patents)

2. Master Lock Company LLC (3 from 453 patents)


23 patents:

1. 8240786 - Door latch

2. D611273 - Chest panel

3. D602723 - Cabinet

4. D591091 - Work bench

5. D589731 - Drawer trim

6. D588843 - Cabinet panel

7. D588201 - Nameplate

8. D580195 - Cabinet

9. D573869 - Handle

10. D568726 - Caster

11. D568078 - Drawer trim

12. D524506 - Tool storage center

13. 6976744 - Tool storage project center with power strip

14. D509939 - Tool storage center

15. 6761366 - Mobile tool carrier

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as of
1/3/2026
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