Growing community of inventors

Kenosha, WI, United States of America

Robert A Shaffer

Average Co-Inventor Count = 4.56

ph-index = 9

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 = 244

Robert A ShafferBruce C Polzin (10 patents)Robert A ShafferWilliam W Barton (7 patents)Robert A ShafferAnthony W Gilbert (6 patents)Robert A ShafferPaul H Mylander (5 patents)Robert A ShafferDavid L Prins (3 patents)Robert A ShafferRand J Krikorian (3 patents)Robert A ShafferJames J Jarecki, Deceased (2 patents)Robert A ShafferTerrance M Case (2 patents)Robert A ShafferRobert Andrew Chieda (1 patent)Robert A ShafferRobert A O'Neil (1 patent)Robert A ShafferLeon C Clouser, Jr (1 patent)Robert A ShafferFredrick B Burns (1 patent)Robert A ShafferJames J Jarecki (1 patent)Robert A ShafferHoward R Moon (1 patent)Robert A ShafferMichael W Brezette (1 patent)Robert A ShafferThomas D Koos (1 patent)Robert A ShafferRobert A Shaffer (12 patents)Bruce C PolzinBruce C Polzin (21 patents)William W BartonWilliam W Barton (11 patents)Anthony W GilbertAnthony W Gilbert (6 patents)Paul H MylanderPaul H Mylander (9 patents)David L PrinsDavid L Prins (3 patents)Rand J KrikorianRand J Krikorian (3 patents)James J Jarecki, DeceasedJames J Jarecki, Deceased (2 patents)Terrance M CaseTerrance M Case (2 patents)Robert Andrew ChiedaRobert Andrew Chieda (39 patents)Robert A O'NeilRobert A O'Neil (34 patents)Leon C Clouser, JrLeon C Clouser, Jr (20 patents)Fredrick B BurnsFredrick B Burns (12 patents)James J JareckiJames J Jarecki (10 patents)Howard R MoonHoward R Moon (9 patents)Michael W BrezetteMichael W Brezette (2 patents)Thomas D KoosThomas D Koos (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Newell Operating Company (10 from 390 patents)

2. Ez Paintr Corporation (2 from 22 patents)


12 patents:

1. 6401290 - Paint brush with improved grip construction

2. 6138313 - Paint brush with improved grip construction and method of manufacture

3. 6101662 - Roller having slip-on cage for paint roller cover

4. 5983455 - Multi-faceted extension pole

5. 5979009 - Roller having slip-on cage for paint roller cover

6. D415899 - Portion of a paint brush handle

7. D406465 - Set of grips for a roller frame handle

8. 5584092 - Roller having slip-on cage for paint roller cover

9. 5432972 - Pad-type corner painting tool

10. D359447 - Clam shell package

11. D338619 - Clam shell package

12. 5014384 - Pad attachment for paint roller assemblies

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as of
1/9/2026
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