Trademarks = 2

Forward Citations = 32

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5 inventors (with patents filed for the assignee):

William F Drinkard (2 out of 18 patents)

Henry S Brown (1 out of 1 patent)

Hans Woerner (1 out of 1 patent)

4. John T Rose (1 out of 1 patent)

5. C Charles Lewchalermwong (1 out of 2 patents)

5 patents: Sort by Forward Citations

1. 4808393 - Process for manufacture of ferric nitrate (1989-02-28),

2. 4599192 - Wood-treating composition (1986-07-08),

3. 4020180 - Noncorrosive cuprammonia fungicide and method for using same (1977-04-26),

4. 3957601 - Electrochemical mining (1976-05-18),

5. 3956087 - Electrochemical mining of copper (1976-05-11),

Company Overview

Mineral Research & Development Corporation (MRDC) is a leading provider of innovative solutions in mineral exploration and development. With decades of experience in the industry, MRDC specializes in conducting research, identifying mineral deposits, and designing sustainable mining projects. Our team of experts is committed to delivering high-quality services to our clients worldwide, ensuring optimal results and long-term success.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#182 in Charlotte, NC

#1,123 in North Carolina

#51,620 in US

Charlotte, NC, United States of America

Mineral Research & Development Corporation

Forward Citations = 32

5 inventors:

William F Drinkard (2 out of 18 patents)

Henry S Brown (1 out of 1 patent)

Hans Woerner (1 out of 1 patent)

4. John T Rose (1 out of 1 patent)

5. C Charles Lewchalermwong (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mineral Research & Development Corporation. Retrieved from https://idiyas.com/company/mineral-research-and-development

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]