Growing community of inventors

Englewood, CO, United States of America

Joseph R Hartt

Average Co-Inventor Count = 1.14

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 = 44

Joseph R HarttJoseph E Velazquez (1 patent)Joseph R HarttJoseph R Hartt (4 patents)Joseph E VelazquezJoseph E Velazquez (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (3 from 832,912 patents)

2. Millennia Corporation (1 from 1 patent)


4 patents:

1. 5940014 - Vehicular approach guidance method and system

2. 5309336 - Universal connector and automotive cigarette lighter assemblies and

3. 5007812 - Hydraulic pump with pulsating high and low pressure outputs

4. 4301981 - Aircraft with rotary wing

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as of
1/10/2026
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