This inventor holds 4 USPTO granted patents. Top assignees: Weyerhaeuser Company Limited, Fmc Corporation, Fmc Gold Company. Active years: 1991-1995.
Location History:
- Denver, CO (US) (1991)
- Salt Lake City, UT (US) (1993 - 1995)
Company Filing History:
2 out of 664 
1 out of 2,517 
1 out of 1 Years Active: 1991-1995
Title: Innovations of Douglas R Shaw in Precious Metal Recovery
Introduction
Douglas R Shaw is a notable inventor based in Salt Lake City, UT. He has made significant contributions to the field of hydrometallurgy, particularly in the recovery of precious metals from refractory ores. With a total of four patents to his name, Shaw's work has advanced the methods used in metal recovery processes.
Latest Patents
Shaw's latest patents focus on innovative hydrometallurgical processes for recovering precious metals. One of his patents describes a method that involves crushing refractory ores to a nominal size of 1/4 inch and treating them with nitric acid. This process allows for the recovery of precious metals while also recycling NOx gases generated during the reaction. Another patent outlines a similar process that includes acidifying the ore and heap treating it with a lixiviating solution to extract precious metals. Both methods emphasize efficiency and environmental sustainability by recycling nitric acid.
Career Highlights
Throughout his career, Douglas R Shaw has worked with prominent companies such as Weyerhaeuser Company Limited and FMC Gold Company. His experience in these organizations has contributed to his expertise in the field of metal recovery and hydrometallurgical processes.
Collaborations
Shaw has collaborated with notable professionals in his field, including Larry J Buter and R Scott Stephens. These collaborations have likely enriched his work and contributed to the development of his innovative processes.
Conclusion
Douglas R Shaw's contributions to the recovery of precious metals through innovative hydrometallurgical processes highlight his expertise and commitment to advancing the field. His patents reflect a dedication to both efficiency and environmental responsibility in metal recovery.