Growing community of inventors

Nevada City, CA, United States of America

David J Butterfield

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 = 22

David J ButterfieldBirney D Dayton (1 patent)David J ButterfieldDavid J Butterfield (1 patent)Birney D DaytonBirney D Dayton (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nvision, Inc. (1 from 26 patents)


1 patent:

1. 5205753 - Circuit board structure

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/6/2026
Loading…