San Jose, CA, United States of America

David J Johnson

This inventor holds 5 USPTO granted patents. Top assignees: Dfine, Inc., U.S. Natural Resources, Inc., Other. Active years: 1991-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David J Johnson. Retrieved from https://idiyas.com/inventor/david-j-johnson-8sejo2op

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


% Patents Active = 80.0

Average Co-Inventor Count = 2.0

ph-index = 2

Forward Citations = 14(Granted Patents)


Location History:

  • Portland, OR (US) (1991 - 1994)
  • Fargo, ND (US) (1996)
  • San Jose, CA (US) (2015 - 2021)

Company Filing History:


Years Active: 1991-2021

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5 patents (USPTO):Explore Patents

Title: The Innovative Contributions of David J Johnson

Introduction

David J Johnson is a notable inventor based in San Jose, California. He has made significant contributions to the field of medical devices and musical instruments, holding a total of 5 patents. His work reflects a blend of creativity and technical expertise, addressing practical challenges in various industries.

Latest Patents

Among his latest inventions is a high-pressure syringe designed for medical applications. This device is capable of generating high pressure to inflate or deflate medical devices, such as balloons, or to inject substances like bone cement into bones. The syringe features a pressure reduction mechanism that allows for safe depressurization. Another notable patent is for a guitar neck adjustment device. This invention includes a truss rod adjustment mechanism that simplifies the process of adjusting the neck of a guitar, ensuring optimal playability and performance.

Career Highlights

David has worked with various companies throughout his career, including U.S. Natural Resources, Inc. His experience in these organizations has contributed to his innovative mindset and ability to develop practical solutions to complex problems.

Collaborations

Throughout his career, David has collaborated with talented individuals, including Charles L Croghan and Charles L Groghan. These partnerships have likely enriched his work and led to the development of groundbreaking inventions.

Conclusion

David J Johnson's contributions to innovation in medical devices and musical instruments highlight his creativity and technical skills. His patents not only demonstrate his expertise but also his commitment to improving the functionality and safety of everyday products.

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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