Growing community of inventors

West Des Moines, IA, United States of America

Thomas R Steinhagen

Average Co-Inventor Count = 1.83

ph-index = 14

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 = 537

Thomas R SteinhagenJerome J Hartmann (22 patents)Thomas R SteinhagenCharles A Haas (12 patents)Thomas R SteinhagenJohn E Schenken (8 patents)Thomas R SteinhagenJerome J Hartman (1 patent)Thomas R SteinhagenJohn E Shenken (1 patent)Thomas R SteinhagenJohn S Schenken (1 patent)Thomas R SteinhagenThomas R Steinhagen (38 patents)Jerome J HartmannJerome J Hartmann (37 patents)Charles A HaasCharles A Haas (23 patents)John E SchenkenJohn E Schenken (18 patents)Jerome J HartmanJerome J Hartman (2 patents)John E ShenkenJohn E Shenken (1 patent)John S SchenkenJohn S Schenken (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cobbs Manufacturing Company (36 from 55 patents)

2. Other (2 from 832,912 patents)


38 patents:

1. D428843 - License plate frame

2. D428374 - License plate frame

3. D427085 - Spot clock

4. D424003 - License plate frame

5. D422638 - Notepad attachment to a cupholder

6. 6036071 - Bracket for attachment of a vehicle accessory to a vehicle structure

7. D416527 - License plate frame

8. 5961016 - Article gripping apparatus

9. 5961083 - Attachment apparatus for the attachment of vehicle accessories to a

10. D413929 - Dashboard note pad

11. D413847 - Slimline license plate frame

12. D413725 - Trifold document holder

13. D413299 - Visor cellular phone holder and organizer

14. D413293 - Visor mirror

15. 5938165 - Article for attachment to a surface

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as of
1/7/2026
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