For the Inventor, By the Inventor

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Hopkinton, MA, United States of America

Control Technology Corporation

USPTO Granted Patents = 13

Trademarks = 7

Forward Citations = 1,372

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11 inventors (with patents filed for the assignee):

Kenneth C Crater (6 out of 9 patents)

Frank T Ferguson (4 out of 4 patents)

Craig E Goldman (3 out of 7 patents)

4. Daniel L Pierson (2 out of 3 patents)

5. Thomas N Schermerhorn (1 out of 2 patents)

6. Charles S Turner (1 out of 3 patents)

7. James C Gray (1 out of 7 patents)

8. Stanley Maurice Katz (1 out of 2 patents)

9. Frank J Hemsher (1 out of 1 patent)

10. Donald J McNeal (1 out of 1 patent)

11. Donald G Cheshier (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 9823640 - Networked programmable industrial controllers (2017-11-21),

2. 6114825 - Method and apparatus for state path generation in a controlled system (2000-09-05),

3. 5997167 - Programmable controller including diagnostic and simulation facilities (1999-12-07),

4. 5982362 - Video interface architecture for programmable industrial control systems (1999-11-09),

5. 5975737 - Distributed interface architecture for programmable industrial control (1999-11-02),

6. 5950006 - Object-oriented programmable controller (1999-09-07),

7. 5805442 - Distributed interface architecture for programmable industrial control (1998-09-08),

8. 4703192 - Alternating current power source with improved phase adjusting capability (1987-10-27),

9. 4703191 - Reserve power source with power failure detection apparatus (1987-10-27),

10. 4560886 - Alternating current power source (1985-12-24),

11. 4362951 - Cycle charge standby power system (1982-12-07),

12. 4315162 - Reserve power supply for computers (1982-02-09),

13. 4278966 - Visual signaling system (1981-07-14),

Control Technology Corporation is a leading provider of advanced automation and control systems for industrial applications. With over 30 years of experience, we offer a wide range of products and solutions to help improve productivity, efficiency, and safety in manufacturing processes. Our cutting-edge technologies and expert engineering team make us a trusted partner for businesses looking to optimize their operations.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 22 2026

13 Patents

#9 in Hopkinton, MA

#1,441 in Massachusetts

#23,797 in US

#44,921 in the World

Hopkinton, MA, United States of America

Control Technology Corporation

Forward Citations = 1,372

11 inventors:

Kenneth C Crater (6 out of 9 patents)

Frank T Ferguson (4 out of 4 patents)

Craig E Goldman (3 out of 7 patents)

4. Daniel L Pierson (2 out of 3 patents)

5. Thomas N Schermerhorn (1 out of 2 patents)

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