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For the Inventor, By the Inventor

West Allis, WI, United States of America

Kearney & Trecker Corporation


USPTO Granted Patents = 89

Forward Citations = 1,705

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51 inventors (with patents filed for the assignee):

goldMedal Richard Johnstone (19 out of 19 patents)

silverMedal Edward E Kirkham (14 out of 20 patents)

bronzeMedal Frank Zankl (13 out of 13 patents)

4.  Ervin J Kielma (11 out of 11 patents)

5.  Richard E Stobbe (9 out of 10 patents)

6.  Earl R Lohneis (7 out of 7 patents)

7.  John J Schachte (6 out of 6 patents)

8.  Lyle D Ostby (5 out of 7 patents)

9.  Russell B Clegg (4 out of 4 patents)

10.  Charles B Sipek (4 out of 4 patents)

11.  Richard W Caddell (4 out of 4 patents)

12.  Albin J Schabowski (3 out of 3 patents)

13.  Michael R Cesarz (3 out of 3 patents)

14.  Frank E Dailey (3 out of 3 patents)

15.  John T Currer (3 out of 3 patents)


Core Competencies:
Six Axis Machine Tool
Automated Part Storage
Tool Clamping Mechanism
Numerically Controlled Machining
High Speed Toolholder
Adaptive Control System
Flexible Manufacturing System
Voice Actuated Control
Servo Controlled Spindle Drive
Automatic Tool Changer
Machine Tool Lubrication
Spindle Orientation Apparatus

89 patents:

1. 5354158 - Six axis machine tool (1994-10-11),
2. 5283934 - Automated part storage and machnining system (1994-02-08),
3. 5066176 - Probe for machine tool (1991-11-19),
4. 4988244 - Six-axis machine tool (1991-01-29),
5. 4845834 - Tool clamping mechanism (1989-07-11),
6. 4792267 - Carriage for a machine tool (1988-12-20),
7. 4784894 - Molded polymer composite (1988-11-15),
8. 4759115 - Numerically controlled automatic tool changing machining center having a (1988-07-26),
9. 4750272 - Tool measuring device employing gap width detection (1988-06-14),
10. 4699276 - Chain-type tool storage magazine (1987-10-13),
11. 4679970 - High speed toolholder for a machining center (1987-07-14),
12. 4673076 - Rotary shuttle for machine tools (1987-06-16),
13. 4643037 - Gear change mechanism (1987-02-17),
14. 4632612 - Spindle orientation apparatus (1986-12-30),
15. 4629053 - Closed loop machining system (1986-12-16),
Kearney & Trecker Corporation is a leading manufacturer of machine tools. With a history dating back to 1898, the company offers a wide range of innovative solutions for various industries. Their product portfolio includes milling machines, lathes, grinders, and more. Kearney & Trecker Corporation is dedicated to delivering high-quality, reliable machines that enhance productivity and efficiency for their customers.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

89 Patents

#1 in West Allis, WI

#95 in Wisconsin

#4,046 in US

#8,341 in the World

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West Allis, WI, United States of America

Kearney & Trecker Corporation

Forward Citations = 1,705

51 inventors:

goldMedal Richard Johnstone (19 out of 19 patents)

silverMedal Edward E Kirkham (14 out of 20 patents)

bronzeMedal Frank Zankl (13 out of 13 patents)

4.  Ervin J Kielma (11 out of 11 patents)

5.  Richard E Stobbe (9 out of 10 patents)

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