% Expired Patents = 88.9

Forward Citations = 128

Loading Chart...

5 inventors (with patents filed for the assignee):

Richard L Mitchell (7 out of 7 patents)

August W Rihaczek (3 out of 4 patents)

Stephen Jeffrey Hershkowitz (1 out of 5 patents)

4. David Mark (1 out of 1 patent)

5. Brett C Weichers (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 9983295 - Direct sampling of received signals in radar (2018-05-29),

2. 9696419 - Marine radar based on cylindrical array antennas with other applications (2017-07-04),

3. 9599704 - Marine radar based on cylindrical array antennas with other applications (2017-03-21),

4. 8416123 - Radar system for continuous tracking of multiple objects (2013-04-09),

5. 8305253 - Forward-looking synthetic aperture radar processing (2012-11-06),

6. 7626536 - Non-scanning radar for detecting and tracking targets (2009-12-01),

7. 7315276 - Beam compression radar (2008-01-01),

8. 6803912 - Real time three-dimensional multiple display imaging system (2004-10-12),

9. 4613863 - Electronic augmentation of radar targets (1986-09-23),

Company Overview

Mark Resources, Inc. is a leading provider of innovative solutions for the oil and gas industry. With over 20 years of experience, we specialize in drilling, production, and environmental services. Our team of experts is dedicated to delivering high-quality results and exceptional customer service to our clients. Contact us today to learn more about how we can help meet your energy needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

9 Patents

#75 in Torrance, CA

#7,730 in California

#32,565 in US

Torrance, CA, United States of America

Mark Resources, Inc.

Forward Citations = 128

5 inventors:

Richard L Mitchell (7 out of 7 patents)

August W Rihaczek (3 out of 4 patents)

Stephen Jeffrey Hershkowitz (1 out of 5 patents)

4. David Mark (1 out of 1 patent)

5. Brett C Weichers (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mark Resources, Inc.. Retrieved from https://idiyas.com/company/mark-resources

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]