Growing community of inventors

Birmingham, United Kingdom

Helmut E Freitag

Average Co-Inventor Count = 2.00

ph-index = 4

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 = 243

Helmut E FreitagCharles A Harrington (3 patents)Helmut E FreitagQinwei Shi (2 patents)Helmut E FreitagOinwei Shi (1 patent)Helmut E FreitagHelmut E Freitag (4 patents)Charles A HarringtonCharles A Harrington (3 patents)Qinwei ShiQinwei Shi (11 patents)Oinwei ShiOinwei Shi (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Spectral Diagnostics, Inc. (4 from 29 patents)


4 patents:

1. 6673628 - Analytical test device and method

2. 6410341 - Analytical test device and method for use in medical diagnoses

3. 6214629 - Analytical test device and method for use in medical diagnoses

4. 6171870 - Analytical test device and method for use in medical diagnoses

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as of
12/17/2025
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