Growing community of inventors

Oakland, CA, United States of America

James B Druffel

Average Co-Inventor Count = 1.17

ph-index = 7

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 = 346

James B DruffelJoel S Cohen (2 patents)James B DruffelJames B Druffel (7 patents)Joel S CohenJoel S Cohen (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Prescolite, Inc. (5 from 27 patents)

2. Prescolite, a Div. of U.S. Industries (1 from 1 patent)

3. Prescolite, a Division of U.S. Industries (1 from 1 patent)


7 patents:

1. 4577824 - Fastening device for fixing a body to a structural member

2. 4566057 - Recessed lighting housing

3. 4511113 - Hangar device for a recessed lighting unit

4. 4471416 - Recessed lighting unit

5. 4399497 - Retainer for a lamp

6. 4388677 - Recessed lighting unit

7. 4358635 - Wireway

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/11/2025
Loading…