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Sheboygan, WI, United States of America

Richard John Hartzheim

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 = 43

Richard John Hartzheim ↔ David R Roland (1 patent)Richard John Hartzheim ↔ Thomas Wilford Teerlink (1 patent)Richard John HartzheimRichard John Hartzheim (1 patent)David R RolandDavid R Roland (6 patents)Thomas Wilford TeerlinkThomas Wilford Teerlink (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. E.i. Dupont De Nemours and Company (1 from 16,338 patents)


1 patent:

1. 5887322 - Apparatus for splicing threadlines

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