Growing community of inventors

Chicago, IL, United States of America

David Schwaba

Average Co-Inventor Count = 3.40

ph-index = 3

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 = 67

David SchwabaRichard Wojdyla (2 patents)David SchwabaWalter S Conard (1 patent)David SchwabaEduard M Svyatsky (1 patent)David SchwabaGary L VanderSyde (1 patent)David SchwabaRoy Charles Schoon (1 patent)David SchwabaMike Stollenwerck (1 patent)David SchwabaStephen R Archer (1 patent)David SchwabaJames Carl McClain (1 patent)David SchwabaWalter Conard (1 patent)David SchwabaAnatoly Estis (1 patent)David SchwabaFred Hegland (1 patent)David SchwabaEric Yadong Jin (1 patent)David SchwabaDavid Schwaba (4 patents)Richard WojdylaRichard Wojdyla (13 patents)Walter S ConardWalter S Conard (24 patents)Eduard M SvyatskyEduard M Svyatsky (24 patents)Gary L VanderSydeGary L VanderSyde (14 patents)Roy Charles SchoonRoy Charles Schoon (7 patents)Mike StollenwerckMike Stollenwerck (5 patents)Stephen R ArcherStephen R Archer (4 patents)James Carl McClainJames Carl McClain (2 patents)Walter ConardWalter Conard (2 patents)Anatoly EstisAnatoly Estis (2 patents)Fred HeglandFred Hegland (1 patent)Eric Yadong JinEric Yadong Jin (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Bowe Bell + Howell Postal Systems Company (3 from 11 patents)

2. Bell & Howell Postal Systems, Inc. (1 from 13 patents)


4 patents:

1. 7325732 - Method and system for mail security and traceability

2. 7141745 - In-line mail weighing system and scale

3. 7097095 - Modular mail preparation system

4. 6217274 - Continuous flow transfer system

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as of
12/5/2025
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