Cupertino, CA, United States of America

Robert L Johnson

This inventor holds 19 USPTO granted patents, primarily in Tool Design Innovations. Top assignees: Allen-Pal LLC, Burndy, LLC, Compaq Computer Corporation, Inc.. Active years: 1982-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Robert L Johnson. Retrieved from https://idiyas.com/inventor/robert-l-johnson

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

Calculating rank

% Patents Active = 68.4

Average Co-Inventor Count = 1.8

ph-index = 14

Forward Citations = 554(Granted Patents)


Location History:

  • Sebree, KY (US) (1982)
  • Santa Clara, CA (US) (1983)
  • Seattle, WA (US) (1984)
  • Long Island City, NY (US) (1986)
  • Wallingford, VT (US) (1992)
  • Buford, GA (US) (2006)
  • Cupertino, CA (US) (1994 - 2010)
  • Fountain Hills, AZ (US) (2010)
  • Harleysville, PA (US) (2017)

Company Filing History:


Years Active: 1982-2017

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Areas of Expertise:
Ladder Support
Liquid Level Sensing
Tool Handle
Gripping Device
Card Edge Connector
Tape Measure Holster
Plumbing Fixture
Fast Acting Vice
Ladder Leveler
Board Game
19 patents (USPTO):Explore Patents

Title: A Profile of Robert L. Johnson: Innovator in Cupertino, CA

Introduction: Robert L. Johnson, based in Cupertino, California, is an accomplished inventor known for his innovative contributions to diverse fields, holding a total of 19 patents. His work showcases a commitment to advancing technology, especially in practical applications that enhance usability and functionality.

Latest Patents: Among his noteworthy inventions are the "Ladder Support and Movement Assembly" and the "Liquid Level Sensing Device and Method." The ladder support assembly features a unique base frame with pivot supports that allow for a ladder to be securely supported while offering functionality to pivot. This design incorporates a crank assembly and adjustable components to enhance user convenience. The liquid level sensing device, on the other hand, includes a multifaceted design with conductive electrodes and a capacitance-to-voltage converter, ensuring accurate measurements of liquid levels through advanced technology.

Career Highlights: Throughout his career, Robert has made significant strides in patentable innovations that reflect his inventive spirit and understanding of complex mechanisms. His expertise in designing practical solutions can be seen in the unique applications of his patents and his overall contributions to technology.

Collaborations: Johnson's journey has also involved collaborations with talented individuals such as Kenneth R. Johnson and Ronald Leon Johnson. Their teamwork has fostered an environment of creativity and innovation, ultimately leading to the development of successful patents that contribute to various industries.

Conclusion: Robert L. Johnson's inventiveness is exemplified through his extensive list of patents and collaborative efforts. With a focus on practical applications like ladder support design and liquid level sensing technology, he continues to influence the innovation landscape in Cupertino and beyond. His work serves as an inspiration to aspiring inventors, showcasing the impact of dedication to invention and improvement.

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]
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