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Fontana, CA, United States of America

G Douglas Hartzheim

Average Co-Inventor Count = 4.00

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 = 113

G Douglas HartzheimDale Robert Haslem (3 patents)G Douglas HartzheimSteve Wilbur (3 patents)G Douglas HartzheimMarty Lancial (3 patents)G Douglas HartzheimG Douglas Hartzheim (3 patents)Dale Robert HaslemDale Robert Haslem (8 patents)Steve WilburSteve Wilbur (4 patents)Marty LancialMarty Lancial (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Aztec Concrete Accessories, Inc. (3 from 7 patents)


3 patents:

1. D428501 - Chair

2. 6089522 - Method and apparatus for supporting reinforcement members

3. D421709 - Tower chair

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as of
12/6/2025
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