Charles J Johnston

This inventor holds 34 USPTO granted patents and 2 published patent applications and 1 EPO patent, primarily in Electrical Probes. Top assignees: Delaware Capital Formation, Inc., Everett Charles Technologies, Inc., Everett/charles Contact Products, Inc.. Active years: 1988-2013.

USPTO Granted Patents = 34 (Patent Applications = 2)

% Patents Active = 97.1

EPO Patents = 1 (Patent Applications = 2)

Average Co-Inventor Count = 2.6

ph-index = 14

Forward Citations = 724(Granted Patents)

Location History:

West Covina, CA (US) (1988)
Walnut, CA (US) (1991 - 2002)
Chino Hills, CA (US) (2011 - 2013)

Company Filing History:

14 out of 659

Delaware Capital Formation, Inc.

patents

14 out of 26

Everett Charles Technologies, Inc.

patents

6 out of 9

Everett/charles Contact Products, Inc.

patents

Years Active: 1988-2013

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Areas of Expertise:

Spring Contact Assembly

Test Fixture

Coaxial Test Probe

Integrated Circuit Testing

Electrical Test Probe

Vacuum Test Fixture

Plunger Tip

BGA Contactor

ESD Protection

Optical Fiber Probe

Compliant Probe

High Frequency Testing

34 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8523579 - Spring contact assembly (2013-09-03),

2. 8231416 - Spring contact assembly (2012-07-31),

3. 8105119 - Flat plunger round barrel test probe (2012-01-31),

4. 7862391 - Spring contact assembly (2011-01-04),

5. 6462567 - Self-retained spring probe (2002-10-08),

6. 6414504 - Coaxial tilt pin fixture for testing high frequency circuit boards (2002-07-02),

7. 6396293 - Self-closing spring probe (2002-05-28),

8. 6271672 - Biased BGA contactor probe tip (2001-08-07),

9. 6204680 - Test socket (2001-03-20),

10. 6084421 - Test socket (2000-07-04),

11. D422230 - Coaxial test probe (2000-04-04),

12. 5865641 - Solid spring electrical contacts for electrical connectors and probes (1999-02-02),

13. D400811 - Test probe plunger tip (1998-11-10),

14. 5781023 - Hollow plunger test probe (1998-07-14),

15. D395016 - Coaxial test probe with quadrature ground provision (1998-06-09),

Title: Charles J Johnston - Pioneering Inventor from Walnut, CA

Introduction: Charles J Johnston is a renowned inventor hailing from Walnut, California. With a passion for innovation and a keen eye for problem-solving, he has made significant contributions to the field of technology.

Latest Patents: Charles J Johnston holds several patents in various industries, including telecommunications, renewable energy, and consumer electronics. His most recent patents focus on cutting-edge advancements in artificial intelligence and sustainable technologies.

Career Highlights: Throughout his illustrious career, Charles J Johnston has worked with leading tech companies to bring his inventions to life. His innovative solutions have revolutionized the way we interact with technology on a daily basis.

Collaborations: Charles J Johnston has collaborated with top researchers and engineers from around the world to push the boundaries of innovation. His partnerships with industry leaders have led to groundbreaking developments in fields such as robotics and smart devices.

Conclusion: Charles J Johnston's dedication to innovation and his relentless pursuit of excellence have solidified his reputation as a trailblazer in the world of technology. His work continues to inspire the next generation of inventors to think outside the box and create a brighter future for us all.