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Sacramento, CA, United States of America

Exploration Logging, Inc.

Calculating rank

USPTO Granted Patents = 18

Forward Citations = 496

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15 inventors (with patents filed for the assignee):

Henry S More (6 out of 6 patents)

Edward S Mumby (5 out of 12 patents)

John D Jeter (3 out of 30 patents)

4. Christopher E Koch (3 out of 3 patents)

5. Waldemar S Wisniewski (2 out of 2 patents)

6. Steven C Owens (1 out of 12 patents)

7. James E Meisner (1 out of 6 patents)

8. Roger L Tresler (1 out of 1 patent)

9. Micheal D Robie (1 out of 1 patent)

10. David A Close (1 out of 1 patent)

11. Trevor K Pugh (1 out of 1 patent)

12. Ronald A Hall (1 out of 4 patents)

13. George W Troy (1 out of 1 patent)

14. Takato Umeda (1 out of 1 patent)

15. Martin J Fennell (1 out of 1 patent)

18 patents: Sort by Forward Citations

1. 4904865 - Externally mounted radioactivity detector for MWD (1990-02-27),

2. 4903245 - Downhole vibration monitoring of a drillstring (1990-02-20),

3. 4756188 - Method and apparatus for compensating for drilling line stretch in (1988-07-12),

4. 4699352 - Apparatus for well logging telemetry (1987-10-13),

5. 4642800 - Noise subtraction filter (1987-02-10),

6. 4601100 - Method for making logging sleeve (1986-07-22),

7. 4550392 - Apparatus for well logging telemetry (1985-10-29),

8. 4513403 - Data encoding and synchronization for pulse telemetry (1985-04-23),

9. 4511829 - Direct current control in inductive loads (1985-04-16),

10. 4494072 - Well logging apparatus with replaceable sensor carrying insulating (1985-01-15),

11. 4483393 - Well logging apparatus and method for making same (1984-11-20),

12. 4405021 - Apparatus for well logging while drilling (1983-09-20),

13. 4386422 - Servo valve for well-logging telemetry (1983-05-31),

14. 4356629 - Method of making well logging apparatus (1982-11-02),

15. 4338565 - Method and apparatus for measuring the movement of a spiral wound wire (1982-07-06),

Company Overview

Exploration Logging, Inc. is a specialized technology firm based in Sacramento, California, focusing on advanced logging and measurement solutions for the oil and gas industry. The company develops innovative tools and systems that enhance subsurface exploration and data acquisition, enabling more efficient resource extraction. With a commitment to research and development, Exploration Logging, Inc. leverages cutting-edge technology to improve operational accuracy and safety in challenging environments.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#14 in Sacramento, CA

#4,295 in California

#17,980 in US

#34,263 in the World

Sacramento, CA, United States of America

Exploration Logging, Inc.

Forward Citations = 496

15 inventors:

Henry S More (6 out of 6 patents)

Edward S Mumby (5 out of 12 patents)

John D Jeter (3 out of 30 patents)

4. Christopher E Koch (3 out of 3 patents)

5. Waldemar S Wisniewski (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Exploration Logging, Inc.. Retrieved from https://idiyas.com/company/exploration-logging

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

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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