Growing community of inventors

Hughesville, PA, United States of America

John W Pfeiffer

Average Co-Inventor Count = 1.46

ph-index = 7

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 = 156

John W PfeifferJames E Mothersbaugh (10 patents)John W PfeifferAnthony E Boroch (3 patents)John W PfeifferRichard W Ambs (1 patent)John W PfeifferMary C Reiner (1 patent)John W PfeifferJohn Fischer (1 patent)John W PfeifferHoward E Stugard (1 patent)John W PfeifferKenneth A Heaton (1 patent)John W PfeifferJohn W Pfeiffer (22 patents)James E MothersbaughJames E Mothersbaugh (18 patents)Anthony E BorochAnthony E Boroch (9 patents)Richard W AmbsRichard W Ambs (20 patents)Mary C ReinerMary C Reiner (2 patents)John FischerJohn Fischer (2 patents)Howard E StugardHoward E Stugard (1 patent)Kenneth A HeatonKenneth A Heaton (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. The Young Industries, Inc. (19 from 70 patents)

2. Koppers Company, Inc. (2 from 297 patents)

3. Other (1 from 832,718 patents)


22 patents:

1. 7967546 - System and method for handling containers of bulk particulate materials

2. 7384230 - System and method for handling containers of bulk particulate materials

3. 7073985 - System for pneumatically conveying bulk particulate materials

4. 7063493 - System and method for handling containers of bulk particulate materials

5. 6964544 - System for pneumatically conveying bulk particulate materials

6. 6843633 - System and apparatus for filling containers with bulk particulate materials

7. 6796749 - System for pneumatically conveying bulk particulate materials

8. 6764253 - System and method for assuring fluidization of a material transported in a pneumatic conveying system

9. 6739358 - System and apparatus for filling containers with bulk particulate materials

10. 6722822 - System for pneumatically conveying bulk particulate materials

11. 6719500 - System for pneumatically conveying bulk particulate materials

12. 6682290 - System for handling bulk particulate materials

13. 6609871 - System for handling bulk particulate materials

14. 6345936 - Bulk material conveying system and ejector therefor

15. 6345935 - Vacuum system for particulate materials and an improved ejector device therefor

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as of
12/10/2025
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