Growing community of inventors

Bloomington, IL, United States of America

Hollis Spence

Average Co-Inventor Count = 4.00

ph-index = 3

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 = 189

Hollis SpenceVincent Bobrosky (3 patents)Hollis SpencePaul J Burress (3 patents)Hollis SpenceLeonard D Hampton (2 patents)Hollis SpenceLeonard B Hampton (1 patent)Hollis SpenceHollis Spence (3 patents)Vincent BobroskyVincent Bobrosky (28 patents)Paul J BurressPaul J Burress (5 patents)Leonard D HamptonLeonard D Hampton (4 patents)Leonard B HamptonLeonard B Hampton (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. White Consolidated Industries, Inc. (2 from 465 patents)

2. Other (1 from 832,966 patents)


3 patents:

1. 5414893 - Vacuum cleaner with improved assembly

2. 5383252 - Vacuum cleaner with improved assembly

3. 5309601 - Vacuum cleaner with improved assembly

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idiyas.com
as of
1/19/2026
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