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Rolling Meadows, IL, United States of America

Mcgraw-Edison Company

USPTO Granted Patents = 279

% Expired Patents = 2.5

CIPO Patents = 1

Trademarks = 19

Forward Citations = 5,222

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267 inventors (with patents filed for the assignee):

Aldino J Gaia (11 out of 17 patents)

Angelo Urani (10 out of 17 patents)

Clyde Gilker (9 out of 13 patents)

4. Paul J Kristofek (9 out of 9 patents)

5. John Lapp (8 out of 25 patents)

6. Michael Mahlon Ramarge (8 out of 20 patents)

7. Veselin Skendzic (7 out of 48 patents)

8. Thomas C Hartman (7 out of 12 patents)

9. Edward A Irelan (7 out of 13 patents)

10. Fred S Sadler (7 out of 7 patents)

11. Richard J Moran (7 out of 11 patents)

12. James R Hurley (7 out of 10 patents)

13. Ljubomir A Kojovic (6 out of 19 patents)

14. Donald Wandler (6 out of 6 patents)

15. David P Bailey (5 out of 10 patents)

Core Competencies:

Electrical Switchgear

Fault Interrupter

High-Voltage Fuse

Surge Arrester

Current Transformer

Load Tap Changer

Cooling Fin

Electrical Arc Furnace

Power Distribution

Voltage Regulator

Cable Connector

Synthetic Fiber Insulation

279 patents: Sort by Forward Citations

1. 7148441 - Solid dielectric encapsulated interrupter with reduced corona levels and improved BIL (2006-12-12),

2. 7133271 - Switchgear with embedded electronic controls (2006-11-07),

3. 7128619 - Connector system and method for securing a cable in a connector system (2006-10-31),

4. 7015786 - Mechanical reinforcement to improve high current, short duration withstand of a monolithic disk or bonded disk stack (2006-03-21),

5. 6980076 - Electrical apparatus with synthetic fiber and binder reinforced cellulose insulation paper (2005-12-27),

6. 6965089 - Axial magnetic field vacuum fault interrupter (2005-11-15),

7. 6940702 - Electrical protection system (2005-09-06),

8. 6933824 - Polymer sheet core and coil insulation for transformers (2005-08-23),

9. 6921989 - Electrical switchgear with synchronous control system and actuator (2005-07-26),

10. 6867385 - Self-fixturing system for a vacuum interrupter (2005-03-15),

11. 6840432 - Solder application technique (2005-01-11),

12. 6833518 - Load tap changer with direct drive and brake (2004-12-21),

13. 6825426 - Make-before-break selector switch (2004-11-30),

14. 6810069 - Electrical arc furnace protection system (2004-10-26),

15. 6797909 - High-voltage loadbreak switch with enhanced arc suppression (2004-09-28),

Company Overview

McGraw-Edison Company, based in Rolling Meadows, IL, specializes in electrical protection systems, focusing on the development and manufacturing of advanced electrical switchgear and fault interrupters. The company is recognized for its expertise in high-voltage fuses, surge arresters, and current transformers, providing critical solutions for power distribution and management. With a commitment to innovation, McGraw-Edison also engages in the design of load tap changers and cooling fins, enhancing the efficiency and reliability of electrical systems across various applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

279 Patents

#2 in Rolling Meadows, IL

#95 in Illinois

#1,563 in US

#3,169 in the World

Rolling Meadows, IL, United States of America

Mcgraw-Edison Company

Forward Citations = 5,222

267 inventors:

Aldino J Gaia (11 out of 17 patents)

Angelo Urani (10 out of 17 patents)

Clyde Gilker (9 out of 13 patents)

4. Paul J Kristofek (9 out of 9 patents)

5. John Lapp (8 out of 25 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mcgraw-Edison Company. Retrieved from https://idiyas.com/company/mcgraw-edison-company

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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