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Beaverton, OR, United States of America

Chau M Doan

Average Co-Inventor Count = 2.18

ph-index = 6

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 = 291

Chau M DoanParesh K Patel (6 patents)Chau M DoanChristopher M Sokol (1 patent)Chau M DoanCorin P Frauenglass (1 patent)Chau M DoanChristopher Michael Sokol (0 patent)Chau M DoanCorin Premoe Frauenglass (0 patent)Chau M DoanChau M Doan (6 patents)Paresh K PatelParesh K Patel (77 patents)Christopher M SokolChristopher M Sokol (6 patents)Corin P FrauenglassCorin P Frauenglass (1 patent)Christopher Michael SokolChristopher Michael Sokol (0 patent)Corin Premoe FrauenglassCorin Premoe Frauenglass (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Payrange Inc. (6 from 73 patents)


6 patents:

1. 10719833 - Method and system for performing mobile device-to-machine payments

2. 10438208 - Systems and methods for interacting with unattended machines using detectable trigger conditions and limited-scope authorization grants

3. 9547859 - Method and system for performing mobile device-to-machine payments

4. 9256873 - Method and device for retrofitting an offline-payment operated machine to accept electronic payments

5. 9134994 - Method and system for updating firmware using a mobile device as a communications bridge

6. 8856045 - Mobile-device-to-machine payment systems

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as of
12/28/2025
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