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Georgetown, TX, United States of America

Joseph D Duffy

Average Co-Inventor Count = 4.80

ph-index = 4

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 = 190

Joseph D Duffy ↔ Ram Ramachandran (4 patents)Joseph D Duffy ↔ John Carl Gabler (4 patents)Joseph D Duffy ↔ David A Glanzer (3 patents)Joseph D Duffy ↔ Stephen B Mitschke (3 patents)Joseph D Duffy ↔ L Jonas F Berge (3 patents)Joseph D Duffy ↔ David A Glanzer (0 patent)Joseph D Duffy ↔ L Jonas F Berge (0 patent)Joseph D Duffy ↔ Steven B Mitschke (0 patent)Joseph D DuffyJoseph D Duffy (4 patents)Ram RamachandranRam Ramachandran (26 patents)John Carl GablerJohn Carl Gabler (6 patents)David A GlanzerDavid A Glanzer (9 patents)Stephen B MitschkeStephen B Mitschke (4 patents)L Jonas F BergeL Jonas F Berge (3 patents)David A GlanzerDavid A Glanzer (0 patent)L Jonas F BergeL Jonas F Berge (0 patent)Steven B MitschkeSteven B Mitschke (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Fieldbus Foundation (4 from 11 patents)

2. Berge, L. Jonas F. (0 patent)

3. Glanzer, David A. (0 patent)

4. Ramachandran, Ram (0 patent)

5. Mitschke, Steven B. (0 patent)

6. Duffy, Joseph D. (0 patent)

7. Gabler, John Carl (0 patent)


4 patents:

1. 7489977 - System and method for implementing time synchronization monitoring and detection in a safety instrumented system

2. 7486999 - System and method for implementing safety instrumented systems in a fieldbus architecture

3. 7167762 - System and method for implementing safety instrumented systems in a fieldbus architecture

4. 6999824 - System and method for implementing safety instrumented systems in a fieldbus architecture

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as of
12/9/2025
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