Growing community of inventors

Stillwater Township, MN, United States of America

Douglas W Voegeli

Average Co-Inventor Count = 2.00

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 = 19

Douglas W Voegeli ↔ Craig D Oster (1 patent)Douglas W Voegeli ↔ Thomas E Drummond (1 patent)Douglas W VoegeliDouglas W Voegeli (2 patents)Craig D OsterCraig D Oster (12 patents)Thomas E DrummondThomas E Drummond (5 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. 3M Innovative Properties Company (2 from 14,087 patents)


2 patents:

1. D487928 - Stethoscope chestpiece

2. 6691821 - Customizable spilt stem stethoscope and a method for providing same

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1/7/2026
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