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For the Inventor, By the Inventor

St. Louis, MO, United States of America

Sunnen Products Company


USPTO Granted Patents = 61



Trademarks = 12

Forward Citations = 283

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38 inventors (with patents filed for the assignee):

goldMedal Daniel R Cloutier (12 out of 12 patents)

silverMedal Harold T Rutter (11 out of 12 patents)

bronzeMedal Frank E Vanderwal, Jr (10 out of 10 patents)

4.  John J Schimweg (9 out of 9 patents)

5.  Robert M Sunnen (8 out of 8 patents)

6.  Russell Jacobsmeyer (7 out of 9 patents)

7.  David M Moehn (6 out of 6 patents)

8.  Timothy P Hoth (5 out of 5 patents)

9.  Wayne W Althen (4 out of 4 patents)

10.  Carl A Mik (3 out of 3 patents)

11.  Michael J Nikrant (3 out of 3 patents)

12.  Jose L Martin (2 out of 2 patents)

13.  Richard F Moellenberg, Jr (2 out of 2 patents)

14.  Joseph F Ondrus, Jr (2 out of 4 patents)

15.  Gerry R Schnitzler (2 out of 2 patents)


Core Competencies:
Honing Tools
Bore Finishing
Servo Stroking
Feed Control Systems
Gaging Systems
Modular Tool Design
Automated Machining
Wear Resistance
Precision Engineering
Coolant Pressure Systems
Machine Tool Technology
Workpiece Handling

61 patents:

1. 10695888 - Elastic biasing element and encoder arrangement for precise control of force or torque (2020-06-30),
2. 9987696 - Automated bore finishing process (2018-06-05),
3. 9789581 - Bore finishing tool (2017-10-17),
4. 9573240 - Honing tool holder with integral in-process feed system (2017-02-21),
5. 9427840 - Honing tool holder with a feed system powered by through-the-spindle coolant pressure and actuated by spindle rotation (2016-08-30),
6. 8538575 - Automatic bore size control by completely integrating an air gage system into the machine control (2013-09-17),
7. 8348718 - Servo stroking method and system for producing special shapes (2013-01-08),
8. 8277280 - Honing feed system and method employing rapid tool advancement and feed force signal conditioning (2012-10-02),
9. 8096859 - Honing tool having enhanced wear resistance properties (2012-01-17),
10. 8096853 - Pre- and post-process bore gaging using a honing feed system equipped with feed force sensing (2012-01-17),
11. 7727051 - Servo stroking apparatus and system (2010-06-01),
12. 7575502 - Method of operating honing feed system having full control of feed force, rate, and position (2009-08-18),
13. 7371149 - Honing feed system having full control of feed force, rate, and position and method of operation of the same (2008-05-13),
14. 6780084 - Method for honing blind bores in workpieces (2004-08-24),
15. 6527620 - Honing tool used to finish blind bores in workpieces and the method of using such tool (2003-03-04),
Sunnen Products Company is the global leader in high-precision honing equipment, cutting tools, and related bore sizing systems based in St. Louis, Missouri, USA.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

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61 Patents

#37 in St. Louis, MO

#68 in Missouri

#5,704 in US

#11,489 in the World

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St. Louis, MO, United States of America

Sunnen Products Company

Forward Citations = 283

38 inventors:

goldMedal Daniel R Cloutier (12 out of 12 patents)

silverMedal Harold T Rutter (11 out of 12 patents)

bronzeMedal Frank E Vanderwal, Jr (10 out of 10 patents)

4.  John J Schimweg (9 out of 9 patents)

5.  Robert M Sunnen (8 out of 8 patents)

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