Growing community of inventors

Clinton, IA, United States of America

Michael Grinnall

Average Co-Inventor Count = 3.56

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 = 41

Michael GrinnallAlan Walter Knapper (4 patents)Michael GrinnallPamela Jo Naeve (4 patents)Michael GrinnallRonald A Zimmer (3 patents)Michael GrinnallRick Braasch (3 patents)Michael GrinnallAndrew James McDonnough (3 patents)Michael GrinnallDuane David Franzen, Jr (3 patents)Michael GrinnallMitch Gravert (3 patents)Michael GrinnallCraig J Bormann (3 patents)Michael GrinnallJeffrey Scott Anderson (2 patents)Michael GrinnallDaniel E Koranda (2 patents)Michael GrinnallJohn McGarry (2 patents)Michael GrinnallDuane Franzen (2 patents)Michael GrinnallTerry Lucky (2 patents)Michael GrinnallClay Bahnsen (2 patents)Michael GrinnallRichard J Gruetzmacher (1 patent)Michael GrinnallJames M Wiese (1 patent)Michael GrinnallDuane D Franzen, Jr (1 patent)Michael GrinnallJames W Wiese (1 patent)Michael GrinnallDavid W Cozzens (1 patent)Michael GrinnallSteven P Guidebeck (1 patent)Michael GrinnallDuane David Franzen (1 patent)Michael GrinnallAndrew James Mcdonnough (1 patent)Michael GrinnallMichael Grinnall (15 patents)Alan Walter KnapperAlan Walter Knapper (10 patents)Pamela Jo NaevePamela Jo Naeve (7 patents)Ronald A ZimmerRonald A Zimmer (22 patents)Rick BraaschRick Braasch (4 patents)Andrew James McDonnoughAndrew James McDonnough (3 patents)Duane David Franzen, JrDuane David Franzen, Jr (3 patents)Mitch GravertMitch Gravert (3 patents)Craig J BormannCraig J Bormann (3 patents)Jeffrey Scott AndersonJeffrey Scott Anderson (9 patents)Daniel E KorandaDaniel E Koranda (3 patents)John McGarryJohn McGarry (3 patents)Duane FranzenDuane Franzen (2 patents)Terry LuckyTerry Lucky (2 patents)Clay BahnsenClay Bahnsen (2 patents)Richard J GruetzmacherRichard J Gruetzmacher (12 patents)James M WieseJames M Wiese (4 patents)Duane D Franzen, JrDuane D Franzen, Jr (1 patent)James W WieseJames W Wiese (1 patent)David W CozzensDavid W Cozzens (1 patent)Steven P GuidebeckSteven P Guidebeck (1 patent)Duane David FranzenDuane David Franzen (2 patents)Andrew James McdonnoughAndrew James Mcdonnough (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Custom-pak, Inc. (14 from 45 patents)

2. Johnson Level & Tool Mfg. Co., Inc. (1 from 85 patents)


15 patents:

1. 11771022 - Sealed connection for fluid conduit parts

2. 11516975 - Sealed connection for fluid conduit parts

3. 11065757 - Hybrid single and double wall case

4. 10299446 - Sealed connection for fluid conduit parts

5. 10272561 - Hybrid single and double wall chainsaw case

6. 10167035 - Blow molded toy cycle

7. 9682739 - Blow molded toy cycle

8. 8899416 - Soft plastic insert for use in protective case

9. 8283007 - Blow molded receptacle and system for making same

10. 7578959 - Method and apparatus for creating a blow molded case

11. 7455513 - System for creating blow molded case

12. 7393495 - Methods and apparatuses for the formation of blow molded objects

13. 7182905 - Blow molded article with retaining feature and method of creating same

14. 7172067 - Level case with positioning indentations

15. 6988633 - Blow molded article with retaining feature and method of creating same

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as of
12/15/2025
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