Growing community of inventors

Belle River, Canada

Robert D Ryan

Average Co-Inventor Count = 2.40

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 = 7

Robert D RyanTiejun Ma (2 patents)Robert D RyanDavid A Bellamy (1 patent)Robert D RyanRobert D Ryan (2 patents)Tiejun MaTiejun Ma (16 patents)David A BellamyDavid A Bellamy (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Illinois Tool Works Inc. (2 from 7,587 patents)


2 patents:

1. 8809738 - Method for providing real-time monitoring of contact tip performance

2. 8710404 - Method and apparatus to maintain welding current to compensate for deterioration of welding contact tip

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as of
12/17/2025
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