Location History:
- London, EN (1976 - 1977)
- Tokers Green, GB (1978 - 1979)
Company Filing History:
3 out of 6 
2 out of 106 
1 out of 1 Years Active: 1976-1979
Title: John James MacGregor: Innovator in Platinum Group Metal Recovery
Introduction
John James MacGregor is a notable inventor based in London, GB. He has made significant contributions to the field of metallurgy, particularly in the recovery of platinum group metals from effluents. With a total of 6 patents to his name, MacGregor's work has had a lasting impact on the industry.
Latest Patents
MacGregor's latest patents focus on innovative processes for recovering platinum group metals from aqueous effluents. One of his key inventions involves a method that includes adjusting the pH of the effluent to an alkalinity of at least 10, heating it to above 60 degrees Celsius, and electrolyzing the effluent at specific conditions to break down stable complexes and precipitate the metals. This process not only enhances recovery efficiency but also contributes to environmental sustainability by treating industrial waste.
Career Highlights
Throughout his career, MacGregor has worked with prominent companies in the field, including Matthey Rustenburg Refiners and Johnson Matthey & Co., Limited. His expertise in metallurgy and innovative approaches have positioned him as a leader in the recovery of precious metals.
Collaborations
MacGregor has collaborated with notable colleagues such as Walter Westwood and John Blunden Payne. These partnerships have further enriched his work and contributed to advancements in the field.
Conclusion
John James MacGregor's contributions to the recovery of platinum group metals through innovative processes highlight his importance as an inventor. His work not only advances industrial practices but also promotes environmental responsibility.