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For the Inventor, By the Inventor

Milwaukee, WI, United States of America

Deltrol Corp.


USPTO Granted Patents = 15


Trademarks = 4

Forward Citations = 140

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12 inventors (with patents filed for the assignee):

goldMedal John L Harris (5 out of 11 patents)

silverMedal Verne P Donner (3 out of 3 patents)

bronzeMedal Brian T Cahill (1 out of 18 patents)

4.  Nick William Buettner (1 out of 8 patents)

5.  James Ostrenga (1 out of 1 patent)

6.  John Schlais (1 out of 1 patent)

7.  Joseph J Mahon (1 out of 15 patents)

8.  George F Jambor (1 out of 10 patents)

9.  Richard S Stone (1 out of 1 patent)

10.  Roger D Rulseh (1 out of 3 patents)

11.  Anthony V Guigliano (1 out of 1 patent)

12.  James E Green, Jr (1 out of 1 patent)


15 patents:

1. 11640864 - System and method for detecting position of a solenoid plunger (2023-05-02),
2. 11618666 - Contactless liquid dispensing valve (2023-04-04),
3. 5300908 - High speed solenoid (1994-04-05),
4. 4751487 - Double acting permanent magnet latching solenoid (1988-06-14),
5. 4340203 - Three way slide valve with center return (1982-07-20),
6. 4203014 - Adjustable interval cycle timer (1980-05-13),
7. 4091839 - Ball check valve (1978-05-30),
8. 4041424 - Automatic reset timer (1977-08-09),
9. 4022109 - Automatic directional control valve (1977-05-10),
10. 3992960 - Two speed manual preset timer (1976-11-23),
11. 3968698 - Automatic reset timer (1976-07-13),
12. 3965312 - Percentage timer (1976-06-22),
13. 3950624 - Automatic reset timer with latch controlled cam operator (1976-04-13),
14. 3947790 - Automatic reset timer (1976-03-30),
15. 3939870 - Combination manual and pilot operated directional control valve (1976-02-24),
Company Overview
Deltrol Corp. is a prominent manufacturer specializing in fluid control and motion control solutions. Based in Milwaukee, Wisconsin, the company focuses on developing high-quality products such as solenoid valves, actuators, and related components, serving a diverse range of industries including automotive, aerospace, and industrial automation. With a commitment to innovation, Deltrol leverages advanced engineering techniques to enhance the performance and reliability of its offerings, ensuring they meet the evolving needs of its global clientele.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

15 Patents

#86 in Milwaukee, WI

#486 in Wisconsin

#21,068 in US

#39,959 in the World

Milwaukee, WI (US)
Milwaukee, WI, United States of America

Deltrol Corp.

Forward Citations = 140

12 inventors:

goldMedal John L Harris (5 out of 11 patents)

silverMedal Verne P Donner (3 out of 3 patents)

bronzeMedal Brian T Cahill (1 out of 18 patents)

4.  Nick William Buettner (1 out of 8 patents)

5.  James Ostrenga (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Deltrol Corp.. Retrieved from https://idiyas.com/company/deltrol

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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