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For the Inventor, By the Inventor

Milwaukee, WI, United States of America

Koehring Company


USPTO Granted Patents = 69

Trademarks = 1

Forward Citations = 1,075

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72 inventors (with patents filed for the assignee):

goldMedal Eugene C Briggs (10 out of 19 patents)

silverMedal Robert F Shaftner (9 out of 9 patents)

bronzeMedal Raud A Wilke (3 out of 18 patents)

4.  Robert D Nicholson (3 out of 6 patents)

5.  C Ranjan Salani (3 out of 3 patents)

6.  Thomas G Bishop (3 out of 8 patents)

7.  Eugene A Sousek (3 out of 9 patents)

8.  William C Wellbaum (3 out of 3 patents)

9.  Harry J Giambrone (3 out of 3 patents)

10.  Gary L Jackson (3 out of 3 patents)

11.  Chittaranjan Salani (3 out of 3 patents)

12.  Michael A Kagan (3 out of 3 patents)

13.  Walter E Meyer (3 out of 4 patents)

14.  Marianne C Green (3 out of 3 patents)

15.  George A Kruder (2 out of 12 patents)


Core Competencies:
Hydraulic Control Valve
Portable Space Heater
Soil Stabilizer Machine
Electrohydraulic Servovalve
Vibratory Roller
Cutting Reel Grinder
Rotary Cutting System
Multi-Position Amplitude Device
Forklift Attachment
Laminated Jet Pipe Receiver
Container for Liquids
Self-Cleaning Sprocket Assembly

69 patents:

1. 5125720 - Mounting arrangement for cutter socket (1992-06-30),
2. D300147 - Printer stand (1989-03-07),
3. 4720207 - Segmented rotor (1988-01-19),
4. 4632630 - Forklift attachment (1986-12-30),
5. 4621871 - Quickly replaceable cutter socket (1986-11-11),
6. 4570672 - Hydraulic control valve with independently operable bypass valve (1986-02-18),
7. 4561463 - Sectional valve having dual pressure relief (1985-12-31),
8. 4532914 - Portable LP space heater (1985-08-06),
9. D276261 - Front panel for a wick heater (1984-11-06),
10. D276260 - Wick heater (1984-11-06),
11. 4474166 - Wick heaters (1984-10-02),
12. 4458763 - Soil stabilizer machine with recycler screen (1984-07-10),
13. 4443187 - Portable heater with integrated control system (1984-04-17),
14. 4421435 - Method and apparatus for applying a thin liquid film to a vibratory plate (1983-12-20),
15. D269522 - Drive unit for flexshaft vibrators (1983-06-28),
Koehring Company is a leading heavy machinery manufacturer with a rich history of innovation and superior quality. With a diverse range of products including cranes, excavators, and forklifts, Koehring has been providing reliable and efficient machines to various industries since its establishment. Visit our website to learn more about our exceptional offerings and how we can fulfill your heavy machinery needs.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

69 Patents

#25 in Milwaukee, WI

#116 in Wisconsin

#5,083 in US

#10,329 in the World

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Milwaukee, WI, United States of America

Koehring Company

Forward Citations = 1,075

72 inventors:

goldMedal Eugene C Briggs (10 out of 19 patents)

silverMedal Robert F Shaftner (9 out of 9 patents)

bronzeMedal Raud A Wilke (3 out of 18 patents)

4.  Robert D Nicholson (3 out of 6 patents)

5.  C Ranjan Salani (3 out of 3 patents)

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