Growing community of inventors

Chino, CA, United States of America

Michael A Grande

Average Co-Inventor Count = 2.00

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 = 2

Michael A GrandeBrandon L Spoelstra (2 patents)Michael A GrandeMichael A Grande (2 patents)Brandon L SpoelstraBrandon L Spoelstra (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hartwell Corporation (2 from 120 patents)


2 patents:

1. 11421459 - Four-bar linkage hinge

2. 10767404 - Four-bar linkage hinge

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as of
1/17/2026
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