Growing community of inventors

Leominster, MA, United States of America

Steven L Hjelm

Average Co-Inventor Count = 5.00

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 = 9

Steven L HjelmThomas M Pizza (2 patents)Steven L HjelmPaul V McGrath (2 patents)Steven L HjelmKeith M Simeone (2 patents)Steven L HjelmJerry W Westwood (2 patents)Steven L HjelmSteven L Hjelm (2 patents)Thomas M PizzaThomas M Pizza (6 patents)Paul V McGrathPaul V McGrath (3 patents)Keith M SimeoneKeith M Simeone (2 patents)Jerry W WestwoodJerry W Westwood (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Bio-techne Corporation (1 from 11 patents)

2. Bio-techne Corportion (1 from 1 patent)


2 patents:

1. 10640275 - Dual chamber storage device

2. 10640276 - Dual chamber storage device

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as of
12/13/2025
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