Growing community of inventors

Xiamen, China

Ma Shangfu

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 2

Ma ShangfuDavid E Swain (1 patent)Ma ShangfuMa Shangfu (1 patent)David E SwainDavid E Swain (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Paragon Water Systems, Inc. (1 from 22 patents)


1 patent:

1. 8371452 - Adjustable ventilation stack for a water filter system

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12/11/2025
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