Growing community of inventors

Allendale, MI, United States of America

John D Spencer

Average Co-Inventor Count = 4.52

ph-index = 6

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 = 239

John D SpencerDavid A Blaker (4 patents)John D SpencerTodd R Witkowski (3 patents)John D SpencerCarl L Shearer (3 patents)John D SpencerJeremy Bos (3 patents)John D SpencerSteven L Geerlings (1 patent)John D SpencerScott Allen Hansen (1 patent)John D SpencerRichard J Chutorash (1 patent)John D SpencerRodger William Eich (1 patent)John D SpencerBrian L Douthitt (1 patent)John D SpencerLoren D Vredevoogd (1 patent)John D SpencerMark Michmerhuizen (1 patent)John D SpencerJeremy J Gauthier (1 patent)John D SpencerJoseph W Strazanac (1 patent)John D SpencerElindo Castro (1 patent)John D SpencerTimothy J Syfert (1 patent)John D SpencerMiklos A Kovach (1 patent)John D SpencerLoren D Vredevoodg (0 patent)John D SpencerJohn D Spencer (7 patents)David A BlakerDavid A Blaker (21 patents)Todd R WitkowskiTodd R Witkowski (64 patents)Carl L ShearerCarl L Shearer (23 patents)Jeremy BosJeremy Bos (8 patents)Steven L GeerlingsSteven L Geerlings (75 patents)Scott Allen HansenScott Allen Hansen (34 patents)Richard J ChutorashRichard J Chutorash (32 patents)Rodger William EichRodger William Eich (15 patents)Brian L DouthittBrian L Douthitt (11 patents)Loren D VredevoogdLoren D Vredevoogd (6 patents)Mark MichmerhuizenMark Michmerhuizen (6 patents)Jeremy J GauthierJeremy J Gauthier (5 patents)Joseph W StrazanacJoseph W Strazanac (3 patents)Elindo CastroElindo Castro (3 patents)Timothy J SyfertTimothy J Syfert (2 patents)Miklos A KovachMiklos A Kovach (2 patents)Loren D VredevoodgLoren D Vredevoodg (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Johnson Controls Technology Company (5 from 1,941 patents)

2. Gentex Corporation (2 from 1,406 patents)


7 patents:

1. 9430945 - System and method for providing route calculation and information to a vehicle

2. 9007168 - System and method for enrollment of a remotely controlled device in a trainable transmitter

3. 8760267 - System and method for enrollment of a remotely controlled device in a trainable transmitter

4. 8174357 - System and method for training a transmitter to control a remote control system

5. 7911358 - System and method for enrollment of a remotely controlled device in a trainable transmitter

6. 7493140 - System, method and device for providing communication between a vehicle and a plurality of wireless devices having different communication standards

7. 7186118 - Electrification system for use in a vehicle

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as of
12/29/2025
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