Growing community of inventors

Santa Ana, CA, United States of America

Marshall F Sparks

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 = 34

Marshall F Sparks ↔ Ronald B Luther (1 patent)Marshall F Sparks ↔ Peter F Frey (1 patent)Marshall F SparksMarshall F Sparks (1 patent)Ronald B LutherRonald B Luther (54 patents)Peter F FreyPeter F Frey (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Luther Medical Products, Inc. (1 from 32 patents)

2. Cobra (1 from 4 patents)


1 patent:

1. 4377165 - Cannula needle for catheter

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as of
12/12/2025
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