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For the Inventor, By the Inventor

Rockford, IL, United States of America

J.l. Clark, Inc.


USPTO Granted Patents = 90

% Expired Patents = 7.8



Trademarks = 3

Forward Citations = 2,329

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43 inventors (with patents filed for the assignee):

goldMedal George Solowiejko (31 out of 33 patents)

silverMedal Edward P Cronin (25 out of 26 patents)

bronzeMedal Philip M Baerenwald (16 out of 18 patents)

4.  Gordon E VerWeyst (14 out of 15 patents)

5.  Walter P Pietruch (10 out of 11 patents)

6.  Joseph P Valley, Iii (9 out of 9 patents)

7.  David K Bried (9 out of 14 patents)

8.  C Alan Peet (8 out of 12 patents)

9.  Richard L Peterson (8 out of 9 patents)

10.  Jason W Ludewig (5 out of 6 patents)

11.  Michael Newberry (4 out of 8 patents)

12.  Ewald A Oppmann (4 out of 4 patents)

13.  Douglas E Pherigo (4 out of 8 patents)

14.  Gregg Hoffman (3 out of 3 patents)

15.  Paul Schneider (3 out of 3 patents)


Core Competencies:
Child Resistant Closure
Tamper Evident Container
Storage Compartment
Measured Volume Dispensing
Hinged Covers
Tobacco Container
Plastic Container
Push and Flip Container
Spice Container
Safety Bottom
Closure Design
Metal Container

90 patents:

1. 12715662 - Container having metal lid and bottom connected with plastic connection ring (2026-08-25),
2. 11958667 - Child resistant package with multiple storage compartments (2024-04-16),
3. 11597568 - Child resistant packaging with multiple storage compartments with hinged covers (2023-03-07),
4. 10569942 - Measured volume dispensing closure, closure having overlapping cover members, and methods (2020-02-25),
5. D847628 - Child resistant closure having double release mechanism (2019-05-07),
6. 10279983 - Carrying case for hand held objects (2019-05-07),
7. 9981783 - Metal container with slideable top (2018-05-29),
8. 9205959 - Lid for tobacco can (2015-12-08),
9. 9010560 - Tamper evident plastic dispensing container (2015-04-21),
10. 8793968 - Methods of manufacturing a plastic spice container (2014-08-05),
11. 8627977 - Tamper evident plastic dispensing container (2014-01-14),
12. 8616376 - Child resistant container (2013-12-31),
13. 8579152 - Push and flip container (2013-11-12),
14. 8485390 - Hinge ring for pivotally coupling a container lid to a container bottom (2013-07-16),
15. 8474624 - Child resistant container (2013-07-02),
Company Overview
J.L. Clark, Inc., based in Rockford, Illinois, specializes in the development and manufacturing of innovative child resistant packaging solutions. The company focuses on creating products that ensure safety and compliance in various applications, particularly in the tobacco and consumer goods sectors. Their expertise encompasses a range of technologies including child resistant closures, tamper evident containers, and specialized dispensing mechanisms. J.L. Clark is committed to advancing packaging safety while meeting the evolving needs of its clients.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

J.l. Clark, Inc. USPTO Patent Assignee Logo
90 Patents

#5 in Rockford, IL

#237 in Illinois

#4,151 in US

#8,535 in the World

Rockford, IL (US)
Rockford, IL, United States of America

J.l. Clark, Inc.

Forward Citations = 2,329

43 inventors:

goldMedal George Solowiejko (31 out of 33 patents)

silverMedal Edward P Cronin (25 out of 26 patents)

bronzeMedal Philip M Baerenwald (16 out of 18 patents)

4.  Gordon E VerWeyst (14 out of 15 patents)

5.  Walter P Pietruch (10 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: J.l. Clark, Inc.. Retrieved from https://idiyas.com/company/j-l-clark

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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