Growing community of inventors

St. Louis, MO, United States of America

David J Heritage

Average Co-Inventor Count = 3.00

ph-index = 1

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 = 8

David J Heritage ↔ Donald E Donnelly (1 patent)David J Heritage ↔ John S Haefner (1 patent)David J HeritageDavid J Heritage (1 patent)Donald E DonnellyDonald E Donnelly (31 patents)John S HaefnerJohn S Haefner (12 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Emerson Electric Company (1 from 2,301 patents)


1 patent:

1. 5169301 - Control system for gas fired heating apparatus using radiant heat sense

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12/29/2025
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