Growing community of inventors

Antioch, IL, United States of America

Daniel L Hart

Average Co-Inventor Count = 3.00

ph-index = 2

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 = 19

Daniel L Hart ↔ John D Anderson (3 patents)Daniel L Hart ↔ Walter J Peach (3 patents)Daniel L HartDaniel L Hart (3 patents)John D AndersonJohn D Anderson (82 patents)Walter J PeachWalter J Peach (67 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Zeftek, Inc. (3 from 41 patents)


3 patents:

1. 7571685 - Freight railroad car reflector

2. D541700 - Freight railroad car reflector

3. D541193 - Freight railroad car reflector

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as of
12/12/2025
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