Growing community of inventors

Ankeny, IA, United States of America

Douglas L Bonstead

Average Co-Inventor Count = 2.25

ph-index = 3

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 = 68

Douglas L BonsteadHerbert O Dixon (1 patent)Douglas L BonsteadRonald D Mastin (1 patent)Douglas L BonsteadWilliam S Wagner, Jr (1 patent)Douglas L BonsteadCarl W Langren (1 patent)Douglas L BonsteadDouglas L Bonstead (3 patents)Herbert O DixonHerbert O Dixon (6 patents)Ronald D MastinRonald D Mastin (2 patents)William S Wagner, JrWilliam S Wagner, Jr (1 patent)Carl W LangrenCarl W Langren (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Deflecta-shield Corp. (3 from 8 patents)


3 patents:

1. D303948 - Sun visor

2. 4846522 - Extruded bug and gravel shield

3. 4770330 - Multi-piece straddle bed tool box for use with pickup trucks

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as of
1/2/2026
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