John C Opfer

This inventor holds 24 USPTO granted patents, plus 16 CIPO patents and 1 EPO patent, primarily in Electrical Switchgear. Top assignee: S&c Electric Company. Active years: 1980-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John C Opfer. Retrieved from https://idiyas.com/inventor/john-c-opfer

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 24

% Patents Active = 100.0

CIPO Patents = 16 (Patent Applications = 7)

EPO Patents = 1

Average Co-Inventor Count = 2.0

ph-index = 6

Forward Citations = 125(Granted Patents)

Location History:

Deerfield, IL (US) (1980 - 1982)
Chicago, IL (US) (1987 - 2015)
Chapel Hill, NC (US) (2017)

Company Filing History:

24 out of 441

S&c Electric Company

patents

Years Active: 1980-2017

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Areas of Expertise:

Circuit Interrupters

Electrical Switchgear

Fault Interrupter

High-Current Conductors

Manual Trip Control

Switch-Operating Mechanism

Flexible Connector

Bushing Assembly

Current Transfer Arrangement

Multi-Path Switching

Pre-Insertion Resistor

Shock-Reducing Feature

24 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9576757 - Circuit interrupters with air trap regions in fluid reservoirs (2017-02-21),

2. D722030 - Pole unit housing for electrical switchgear (2015-02-03),

3. 8681462 - Circuit testing closer apparatus and method with in-rush current awareness (2014-03-25),

4. 7626397 - High current capable circuit testing closer apparatus and method (2009-12-01),

5. 7440251 - Multi-path switching configuration (2008-10-21),

6. 7352265 - Manual trip control method and arrangement for multiple circuit interrupters (2008-04-01),

7. 6674027 - Operating arrangement for mechanism (2004-01-06),

8. 6628494 - Protective device and system (2003-09-30),

9. 6429393 - Current transfer arrangement for circuit interrupter (2002-08-06),

10. 6180902 - Fault interrupter and operating mechanism therefor (2001-01-30),

11. 6127637 - Disconnect feature for interrupter (2000-10-03),

12. 6114642 - Switchgear assembly (2000-09-05),

13. 6040538 - Switchgear assembly (2000-03-21),

14. 5904577 - Separable, flexible electrical connection arrangement (1999-05-18),

15. 5864107 - Switchgear assembly (1999-01-26),

Title: The Innovative Journey of John C. Opfer

Introduction: John C. Opfer is a renowned inventor based in Chicago, Illinois, known for his groundbreaking contributions to various industries through his inventive spirit and dedication to innovation.

Latest Patents: John C. Opfer holds several patents in the fields of technology, healthcare, and consumer products, showcasing his diverse range of expertise and creativity.

Career Highlights: With a career spanning over two decades, John C. Opfer has established himself as a leading figure in the world of inventions, with numerous successful products and solutions credited to his name.

Collaborations: Throughout his career, John C. Opfer has collaborated with top companies, research institutions, and universities to bring his ideas to life, demonstrating his ability to work effectively in multidisciplinary teams.

Conclusion: John C. Opfer's passion for innovation and his relentless drive to push the boundaries of what is possible make him a true pioneer in the world of inventions, with a legacy that continues to inspire future generations of inventors.

Profile summary based on public USPTO records.