Growing community of inventors

Centennial, CO, United States of America

Darwin D Spencer, Jr

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 = 2

Darwin D Spencer, JrTan Dinh Nguyen (1 patent)Darwin D Spencer, JrLance D Crain (1 patent)Darwin D Spencer, JrGregory Joseph Chambers (1 patent)Darwin D Spencer, JrDonald W Suwyn (1 patent)Darwin D Spencer, JrDarwin D Spencer, Jr (2 patents)Tan Dinh NguyenTan Dinh Nguyen (18 patents)Lance D CrainLance D Crain (14 patents)Gregory Joseph ChambersGregory Joseph Chambers (6 patents)Donald W SuwynDonald W Suwyn (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Crain Cutter Company, Inc. (2 from 27 patents)


2 patents:

1. 10934725 - Angle tapping block

2. 10315318 - Cushion back cutter

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/4/2026
Loading…