Growing community of inventors

San Francisco, CA, United States of America

Stephen Langhans

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 = 1,136

Stephen LanghansLaurence M Goodman (2 patents)Stephen LanghansSigman L Shapiro (2 patents)Stephen LanghansStephen Langhans (2 patents)Laurence M GoodmanLaurence M Goodman (2 patents)Sigman L ShapiroSigman L Shapiro (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Visa International (2 from 6 patents)


2 patents:

1. 5621201 - Automated purchasing control system

2. 5500513 - Automated purchasing control system

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1/2/2026
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