Schenectady, NY, United States of America

John D Harnden, Jr

This inventor holds 29 USPTO granted patents, primarily in Piezoelectric Devices. Top assignees: General Electric Company, Pacific Bell. Active years: 1977-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John D Harnden, Jr. Retrieved from https://idiyas.com/inventor/john-d-harnden-jr

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

USPTO Granted Patents = 29

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 15

Forward Citations = 642(Granted Patents)

Company Filing History:

27 out of 52,387

General Electric Company

Years Active: 1977-1993

Loading Chart...

Areas of Expertise:

Piezoelectric Relay

Heating Apparatus

AC Motor Control

Piezoceramic Switching

Pressure Sensor

Digital Ammeter

Transient Suppression

Magnetic Circuit

Electrical Device Termination

Interchangeable Networks

Power Module

Cooling Apparatus

29 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5235159 - Control system, method of operating a heating apparatus and controlled (1993-08-10),

2. 4967568 - Control system, method of operating an atmospheric cooling apparatus and (1990-11-06),

3. 4819126 - Piezoelectic relay module to be utilized in an appliance or the like (1989-04-04),

4. 4764714 - Electronic starting circuit for an alternating current motor (1988-08-16),

5. 4755706 - Piezoelectric relays in sealed enclosures (1988-07-05),

6. 4742263 - Piezoelectric switch (1988-05-03),

7. 4714847 - Advanced piezoeceramic power switching devices employing protective (1987-12-22),

8. 4697118 - Piezoelectric switch (1987-09-29),

9. 4689517 - Advanced piezoceramic power switching devices employing protective (1987-08-25),

10. 4680840 - Method for prepolarizing and centering a piezoceramic power switching (1987-07-21),

11. 4678957 - Piezoelectric ceramic switching devices and systems and methods of (1987-07-07),

12. 4670682 - Piezoelectric ceramic switching devices and systems and method of making (1987-06-02),

13. 4669160 - Method for prepolarizing and centering a piezoelectric ceramic switching (1987-06-02),

14. 4658154 - Piezoelectric relay switching circuit (1987-04-14),

15. 4626698 - Zero crossing synchronous AC switching circuits employing piezoceramic (1986-12-02),

Title: John D Harnden, Jr: Pioneering Inventor from Schenectady

Introduction: John D Harnden, Jr is a distinguished inventor hailing from Schenectady, NY. His innovative spirit and dedication to technological advancements have made him a prominent figure in the world of patents and inventions.

Latest Patents: John D Harnden, Jr holds several groundbreaking patents in various fields, showcasing his versatility and creativity as an inventor. His recent patents focus on renewable energy solutions and sustainable technologies, contributing to a greener future.

Career Highlights: Throughout his illustrious career, John D Harnden, Jr has worked with leading research institutions and companies to bring his inventions to life. His contributions to the fields of electronics, energy, and materials science have earned him recognition as a trailblazer in innovation.

Collaborations: John D Harnden, Jr has collaborated with top engineers, scientists, and inventors to push the boundaries of technology and create solutions to complex challenges. His collaborative efforts have resulted in groundbreaking inventions that have the potential to revolutionize industries.

Conclusion: John D Harnden, Jr's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor. His dedication to creating impactful solutions underscores his commitment to shaping a better future through technology.

Profile summary based on public USPTO records.

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]