Growing community of inventors

Tyler, TX, United States of America

J Mark Hagan

Average Co-Inventor Count = 3.43

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 = 209

J Mark Hagan ↔ Michael H Reedy (3 patents)J Mark Hagan ↔ Stephen Craig Pennington (3 patents)J Mark Hagan ↔ Tong Jin Kim (1 patent)J Mark Hagan ↔ Robert Wayne Helt (1 patent)J Mark Hagan ↔ Stephen J Vendt (1 patent)J Mark Hagan ↔ Roger L Boydstun (1 patent)J Mark HaganJ Mark Hagan (4 patents)Michael H ReedyMichael H Reedy (58 patents)Stephen Craig PenningtonStephen Craig Pennington (8 patents)Tong Jin KimTong Jin Kim (37 patents)Robert Wayne HeltRobert Wayne Helt (31 patents)Stephen J VendtStephen J Vendt (18 patents)Roger L BoydstunRoger L Boydstun (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Trane International Inc. (2 from 789 patents)

2. American Standard International Inc. (2 from 214 patents)


4 patents:

1. D589605 - Air inlet grille

2. D588257 - Air inlet grille

3. 7351274 - Air filtration system control

4. D540930 - Door for air filter apparatus

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as of
12/15/2025
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