Growing community of inventors

Hampshire, IL, United States of America

Joseph Leonard Dvorak

Average Co-Inventor Count = 2.80

ph-index = 2

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 = 10

Joseph Leonard DvorakGregory Jason Fields (3 patents)Joseph Leonard DvorakJohn Patrick Grenn (3 patents)Joseph Leonard DvorakMichael Williams Suman (3 patents)Joseph Leonard DvorakSusan Tammy teWinkel (3 patents)Joseph Leonard DvorakLarry Eugene Albright (2 patents)Joseph Leonard DvorakJon D Cohen (2 patents)Joseph Leonard DvorakWalid S Saba (2 patents)Joseph Leonard DvorakBradley Shayne Ferringo (2 patents)Joseph Leonard DvorakAlexander Samson Hirsch (1 patent)Joseph Leonard DvorakBradley Ferringo (1 patent)Joseph Leonard DvorakSusan Tammy Tewinkel (0 patent)Joseph Leonard DvorakBradley Shayne Ferringo (1 patent)Joseph Leonard DvorakSusan Tammy Tewinkel (1 patent)Joseph Leonard DvorakGregory Jason Fields (1 patent)Joseph Leonard DvorakJohn Patrick Grenn (1 patent)Joseph Leonard DvorakBradley Shayne Ferringo (0 patent)Joseph Leonard DvorakJoseph Leonard Dvorak (7 patents)Gregory Jason FieldsGregory Jason Fields (15 patents)John Patrick GrennJohn Patrick Grenn (8 patents)Michael Williams SumanMichael Williams Suman (3 patents)Susan Tammy teWinkelSusan Tammy teWinkel (3 patents)Larry Eugene AlbrightLarry Eugene Albright (3 patents)Jon D CohenJon D Cohen (3 patents)Walid S SabaWalid S Saba (2 patents)Bradley Shayne FerringoBradley Shayne Ferringo (2 patents)Alexander Samson HirschAlexander Samson Hirsch (8 patents)Bradley FerringoBradley Ferringo (6 patents)Susan Tammy TewinkelSusan Tammy Tewinkel (0 patent)Bradley Shayne FerringoBradley Shayne Ferringo (3 patents)Susan Tammy TewinkelSusan Tammy Tewinkel (1 patent)Gregory Jason FieldsGregory Jason Fields (1 patent)John Patrick GrennJohn Patrick Grenn (1 patent)Bradley Shayne FerringoBradley Shayne Ferringo (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Blackberry Corporation (4 from 5,890 patents)

2. American Institutes for Research (2 from 3 patents)

3. Cambium Assessment, Inc. (1 from 1 patent)


7 patents:

1. 10643489 - Constructed response scoring mechanism

2. 9812026 - Constructed response scoring mechanism

3. 9672000 - Method and apparatus for generating an audio notification file

4. 9495965 - Synthesis and display of speech commands method and system

5. 9257019 - Method and apparatus for generating an audio notification file

6. 8613061 - Methods and apparatus to implement electronic book viewers

7. 8564421 - Method and apparatus for generating an audio notification file

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12/6/2025
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