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Pembroke Pine, FL, United States of America

Harold R Crews

Average Co-Inventor Count = 3.00

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 = 27

Harold R CrewsRoy M Evans, Jr (2 patents)Harold R CrewsJoseph O Rubert (2 patents)Harold R CrewsHarold R Crews (2 patents)Roy M Evans, JrRoy M Evans, Jr (5 patents)Joseph O RubertJoseph O Rubert (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (1 from 832,680 patents)

2. Preemptive Marketing, Inc. (1 from 1 patent)


2 patents:

1. 5101841 - Compositions and methods for the treatment of hair

2. 4947878 - Compositions and methods for the treatment of hair

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12/8/2025
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