Growing community of inventors

Mt. Prospect, IL, United States of America

James R Shaffer

Average Co-Inventor Count = 2.50

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 = 32

James R ShafferLee F Radtke (9 patents)James R ShafferDavid E Maxwell (6 patents)James R ShafferRonald L Carlson (1 patent)James R ShafferJames R Shaffer (10 patents)Lee F RadtkeLee F Radtke (30 patents)David E MaxwellDavid E Maxwell (6 patents)Ronald L CarlsonRonald L Carlson (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sun Electric Corporation (10 from 73 patents)


10 patents:

1. D313947 - Combined engine analyzer and cart

2. D313764 - Diagnostic analyzer

3. D310789 - Engine analyzer

4. D257331 - Engine exhaust emission analyzer

5. D257013 - Engine exhaust emission analyzer

6. D250178 - Dwell/tachometer

7. D249938 - Tachometer

8. D249876 - Inductive clamp

9. D248630 - Timing light

10. D246972 - Remote starter switch

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as of
12/31/2025
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