Growing community of inventors

Berkeley, CA, United States of America

Derek T O'Hagen

Average Co-Inventor Count = 4.00

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 = 41

Derek T O'HagenStanley Stewart Davis (2 patents)Derek T O'HagenWu Lin (2 patents)Derek T O'HagenAllan Gerald Coombes (1 patent)Derek T O'HagenAllan G A Coombes (1 patent)Derek T O'HagenDerek T O'Hagen (2 patents)Stanley Stewart DavisStanley Stewart Davis (16 patents)Wu LinWu Lin (7 patents)Allan Gerald CoombesAllan Gerald Coombes (3 patents)Allan G A CoombesAllan G A Coombes (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,812 patents)

2. Chiron Corporation (1 from 656 patents)


2 patents:

1. 6592844 - Preparation of protein microspheres, films and coatings

2. 6007791 - Preparation of protein microspheres, films and coatings

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as of
12/18/2025
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