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For the Inventor, By the Inventor

Petaluma, CA, United States of America

David R Johnson

This inventor holds 16 USPTO granted patents. Top assignees: Chevron U.s.a. Inc., Chevron Research Company, Chevron Research & Technology Company. Active years: 1988-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David R Johnson. Retrieved from https://idiyas.com/inventor/david-r-johnson-8r3isa1p

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

USPTO Granted Patents = 16

% Patents Active = 56.3

Average Co-Inventor Count = 2.1

ph-index = 9

Forward Citations = 340(Granted Patents)


Location History:

  • Murphy's, CA (US) (1990)
  • San Francisco, CA (US) (1988 - 1992)
  • Garden Grove, CA (US) (2001)
  • Petaluma, CA (US) (1995 - 2009)

Company Filing History:

goldMedal9 out of 2,557 
 
Chevron U.s.a. Inc.
 patents
silverMedal2 out of 1,860 
 
Chevron Research Company
 patents
bronzeMedal1 out of 251 
 
Chevron Research & Technology Company
 patents
4. 4 out of 834,570 
Other
 patents

Years Active: 1988-2009

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16 patents (USPTO):Explore Patents
1. 7578926 - [object Object] (2009-08-25),
2. 7332073 - Process for removing contaminants from Fischer-Tropsch feed streams (2008-02-19),
3. 6949180 - Low toxicity Fischer-Tropsch derived fuel and process for making same (2005-09-27),
4. 6703535 - Process for upgrading fischer-tropsch syncrude using thermal cracking and oligomerization (2004-03-09),
5. 6702937 - Process for upgrading Fischer-Tropsch products using dewaxing and hydrofinishing (2004-03-09),
6. 6700027 - Process for the oligomerization of olefins in Fischer-Tropsch condensate using chromium catalyst and high temperature (2004-03-02),
7. 6605206 - Process for increasing the yield of lubricating base oil from a Fischer-Tropsch plant (2003-08-12),
8. 6201385 - Voltage and continuity tester (2001-03-13),
9. 5733440 - Catalyst, method and apparatus for an on-stream particle replacement (1998-03-31),
10. 5599440 - Catalyst method and apparatus for an on-stream particle replacement (1997-02-04),
11. 5498327 - Catalyst, method and apparatus for an on-stream particle replacement (1996-03-12),
12. 5472928 - Catalyst, method and apparatus for an on-stream particle replacement (1995-12-05),
13. 5089463 - Hydrodemetalation and hydrodesulfurization catalyst of specified (1992-02-18),
14. 4976848 - Hydrodemetalation and hydrodesulfurization using a catalyst of specified (1990-12-11),
15. 4896437 - Insulated boot and gaiter combination (1990-01-30),

Title: David R Johnson: Innovator in Lubrication and Fischer-Tropsch Processes

Introduction

David R Johnson is a prominent inventor based in Petaluma, CA (US). He holds a total of 16 patents that showcase his expertise in the fields of lubrication and chemical processing. His innovative approaches have significantly contributed to advancements in these areas.

Latest Patents

Among his latest patents, one includes a process for producing a lubricating base oil with high oxidation stability. This process involves determining the weight percent of olefins in the feed using H NMR, hydroprocessing the feed to reduce olefins to a target value, and collecting the lubricating base oil with the desired oxidation stability. Another notable patent focuses on removing contaminants from Fischer-Tropsch feed streams. This process entails several steps, including passing the products through a particulate removal zone, collecting a substantially particulate-free feed stream, and recovering a Fischer-Tropsch product with minimal aluminum content.

Career Highlights

David has worked with notable companies, including Chevron U.S.A. Inc. His experience in the industry has allowed him to develop and refine his innovative processes, contributing to the efficiency and effectiveness of lubrication and chemical synthesis.

Collaborations

Throughout his career, David has collaborated with professionals such as Christopher A Simmons and David C Kramer. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

David R Johnson's contributions to the fields of lubrication and Fischer-Tropsch processes highlight his role as a significant inventor. His patents reflect a commitment to innovation and excellence in chemical engineering.

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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