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For the Inventor, By the Inventor

Hamilton, OH, United States of America

Knappco Corporation


USPTO Granted Patents = 24

% Expired Patents = 8.3



Trademarks = 12

Forward Citations = 65

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30 inventors (with patents filed for the assignee):

goldMedal Mark William Dudley (9 out of 12 patents)

silverMedal Randy Donald Robinson (7 out of 9 patents)

bronzeMedal Erik Paul Bjornebo (5 out of 5 patents)

4.  Jeffrey Joseph Blair (4 out of 5 patents)

5.  Richard Lee Henderson (4 out of 11 patents)

6.  Scott A Finnell (4 out of 5 patents)

7.  Steven D Gramling (4 out of 6 patents)

8.  Francis V Stemporzewski, Jr (4 out of 9 patents)

9.  Claude W Mixon (3 out of 6 patents)

10.  Bryan E VanDeVyvere (3 out of 3 patents)

11.  Avraham Shmuel Lichtash (2 out of 4 patents)

12.  Joseph P Roth (2 out of 9 patents)

13.  Mikael A Nelson (2 out of 2 patents)

14.  Kapil Pandey (2 out of 2 patents)

15.  Gautham Ramamurthy (1 out of 17 patents)


24 patents:

1. 12617667 - Vapor line coupler (2026-05-05),
2. 12358779 - Product delivery systems for liquid product transport vehicles and methods of loading liquid products using the same (2025-07-15),
3. 12037237 - Control systems for liquid product delivery vehicles (2024-07-16),
4. 11999608 - Product delivery systems for liquid product transport vehicles and methods of loading liquid products using the same (2024-06-04),
5. 11860653 - Preventing contamination in a bulk liquid storage tank (2024-01-02),
6. 11807514 - Control systems for liquid product delivery vehicles (2023-11-07),
7. 11674623 - Swivel joint with electrical conductivity grease fitting (2023-06-13),
8. 11634275 - Coupler with quick release handle and valve assemblies (2023-04-25),
9. 11466519 - Shear coupling (2022-10-11),
10. 11194351 - Securing product storage tanks against unauthorized delivery (2021-12-07),
11. 11169045 - Methods and systems for determining residual life of a swivel (2021-11-09),
12. 10882733 - Optical fluid sensors for cross contamination control systems (2021-01-05),
13. 10787358 - Control systems for liquid product delivery vehicles (2020-09-29),
14. 10669147 - Crossover protection system graphical user interfaces (2020-06-02),
15. 10534374 - Cross contamination control systems with fluid product ID sensors (2020-01-14),
Company Overview
Knappco Corporation, based in Hamilton, Ohio, specializes in the development and manufacturing of advanced industrial equipment and systems. The company focuses on providing innovative solutions for various sectors, including material handling and automation. With a commitment to engineering excellence, Knappco leverages cutting-edge technology to enhance operational efficiency and productivity for its clients. The organization is recognized for its expertise in creating tailored solutions that meet the unique needs of its diverse customer base.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Knappco Corporation USPTO Patent Assignee Logo
24 Patents

#3 in Hamilton, OH

#615 in Ohio

#13,884 in US

#26,660 in the World

Hamilton, OH (US)
Hamilton, OH, United States of America

Knappco Corporation

Forward Citations = 65

30 inventors:

goldMedal Mark William Dudley (9 out of 12 patents)

silverMedal Randy Donald Robinson (7 out of 9 patents)

bronzeMedal Erik Paul Bjornebo (5 out of 5 patents)

4.  Jeffrey Joseph Blair (4 out of 5 patents)

5.  Richard Lee Henderson (4 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Knappco Corporation. Retrieved from https://idiyas.com/company/knappco

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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