Growing community of inventors

Klongtoey, Thailand

David Howard Birtwistle

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 = 26

David Howard Birtwistle ↔ Andrew Malcolm Murray (2 patents)David Howard Birtwistle ↔ Siripom Dechsinga (1 patent)David Howard Birtwistle ↔ Siriporn Dechsinga (1 patent)David Howard BirtwistleDavid Howard Birtwistle (2 patents)Andrew Malcolm MurrayAndrew Malcolm Murray (35 patents)Siripom DechsingaSiripom Dechsinga (1 patent)Siriporn DechsingaSiriporn Dechsinga (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Helene Curtis, Inc. (2 from 140 patents)


2 patents:

1. 6355234 - Shampoo compositions and method

2. 5977038 - Shampoo compositions and method

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as of
12/12/2025
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