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For the Inventor, By the Inventor

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):

goldMedal Kenneth C Crater (6 out of 9 patents)

silverMedal Frank T Ferguson (4 out of 4 patents)

bronzeMedal 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:

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),
Company Overview
Control Technology Corporation, based in Hopkinton, MA, specializes in advanced control systems and automation solutions. The company focuses on developing innovative technologies that enhance operational efficiency across various industries, including manufacturing and process control. With a commitment to quality and precision, Control Technology Corporation aims to provide reliable products that meet the evolving needs of its clients, leveraging expertise in control engineering and system integration to drive performance improvements.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#9 in Hopkinton, MA

#1,443 in Massachusetts

#23,854 in US

#45,081 in the World

Hopkinton, MA (US)
Hopkinton, MA, United States of America

Control Technology Corporation

Forward Citations = 1,372

11 inventors:

goldMedal Kenneth C Crater (6 out of 9 patents)

silverMedal Frank T Ferguson (4 out of 4 patents)

bronzeMedal 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Control Technology Corporation. Retrieved from https://idiyas.com/company/control-technology

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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