Growing community of inventors

O'Fallon, MO, United States of America

Helen Hagan

Average Co-Inventor Count = 4.44

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 = 11

Helen Hagan ↔ Maxine Clark (2 patents)Helen Hagan ↔ Shari Ann Stout (1 patent)Helen Hagan ↔ Beverly S Schofield (1 patent)Helen Hagan ↔ Diane Ressel (1 patent)Helen Hagan ↔ Ming-Tai Tun (1 patent)Helen Hagan ↔ Shelley Armstrong (1 patent)Helen HaganHelen Hagan (2 patents)Maxine ClarkMaxine Clark (15 patents)Shari Ann StoutShari Ann Stout (11 patents)Beverly S SchofieldBeverly S Schofield (9 patents)Diane ResselDiane Ressel (5 patents)Ming-Tai TunMing-Tai Tun (1 patent)Shelley ArmstrongShelley Armstrong (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Build-a-bear Workshop, Inc. (2 from 32 patents)


2 patents:

1. D478534 - Toy bicycle

2. D467625 - Scooter for toy animals

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as of
1/1/2026
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