Growing community of inventors

Russell, OH, United States of America

Christopher M Nook

Average Co-Inventor Count = 1.87

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 = 42

Christopher M NookHugh Miller Herr (3 patents)Christopher M NookTimothy Mark Dalrymple (3 patents)Christopher M NookSeth S Kessler (3 patents)Christopher M NookJeff Anthony Weber (22 patents)Christopher M NookChristopher Eric Barnhart (3 patents)Christopher M NookKristin Size (3 patents)Christopher M NookGregory Kent Thompson (3 patents)Christopher M NookRobert W Spaller (3 patents)Christopher M NookRick Casler (3 patents)Christopher M NookAlexander S Margolin (3 patents)Christopher M NookDavid W Murray (3 patents)Christopher M NookMatthew T Kowalczyk (3 patents)Christopher M NookKevin A Alexeff (1 patent)Christopher M NookKristin Jugenheimer Size (0 patent)Christopher M NookMatthew Thomas Kowalczyk (0 patent)Christopher M NookDavid Wayne Murray (0 patent)Christopher M NookRobert William Spaller (0 patent)Christopher M NookChristopher M Nook (7 patents)Hugh Miller HerrHugh Miller Herr (92 patents)Timothy Mark DalrympleTimothy Mark Dalrymple (29 patents)Seth S KesslerSeth S Kessler (23 patents)Jeff Anthony WeberJeff Anthony Weber (22 patents)Christopher Eric BarnhartChristopher Eric Barnhart (17 patents)Kristin SizeKristin Size (13 patents)Gregory Kent ThompsonGregory Kent Thompson (11 patents)Robert W SpallerRobert W Spaller (9 patents)Rick CaslerRick Casler (8 patents)Alexander S MargolinAlexander S Margolin (5 patents)David W MurrayDavid W Murray (4 patents)Matthew T KowalczykMatthew T Kowalczyk (3 patents)Kevin A AlexeffKevin A Alexeff (2 patents)Kristin Jugenheimer SizeKristin Jugenheimer Size (0 patent)Matthew Thomas KowalczykMatthew Thomas Kowalczyk (0 patent)David Wayne MurrayDavid Wayne Murray (0 patent)Robert William SpallerRobert William Spaller (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Bionx Medical Technologies, Inc. (3 from 20 patents)

2. Helix Linear Technologies (3 from 4 patents)

3. Huntducks, LLC (1 from 1 patent)

4. Otto Bock Healthcare Gmbh (174 patents)

5. Iwalk, Inc. (8 patents)


7 patents:

1. 12018743 - Lead screw nuts having threads formed from different materials

2. D1016599 - Nut

3. 11268607 - Lead screw nuts having threads formed from different materials

4. 10575971 - Hybrid terrain-adaptive lower-extremity systems

5. 10070974 - Hybrid terrain-adaptive lower-extremity systems

6. 9345592 - Hybrid terrain-adaptive lower-extremity systems

7. D647164 - Small game carrier

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as of
12/25/2025
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