Company Filing History:
1 out of 424 
1 out of 45 Years Active: 1983-1989
Title: James M Skeaff: Innovator in Arsenic Detection and Uranium Processing
Introduction
James M Skeaff is a notable inventor based in Ottawa, Canada. He has made significant contributions to the fields of pyrometallurgical processes and uranium ore processing. With a total of 2 patents, his work has advanced the understanding and technology related to arsenic detection and uranium extraction.
Latest Patents
One of Skeaff's latest patents is a solid-state arsenic probe designed for use in pyrometallurgical processes. This potentiometric electrochemical sensor detects gaseous concentrations of arsenic oxides or arsenic-bearing species at elevated temperatures. The sensor consists of an ionically conducting solid-state membrane, which may be made of silver zirconium arsenate, sodium beta-alumina, or silver beta-alumina. It also includes a reference electrode, which may be silver wire packed in silver powder, and a working electrode that may consist of a platinum mesh electrode or a silver wire exposed to the arsenic oxide-bearing gas. The probe is responsive to arsine [AsH.sub.3] concentrations in the range of 5-1000 ppm in oxidizing gases, such as air, raised to temperatures between 600°C and 900°C. The compound silver zirconium arsenate is also a novel aspect of this invention.
Another significant patent by Skeaff involves uranium ore processing. This invention focuses on processing uranium ores, concentrates, calcines, or tailings to remove radium and thorium, as well as uranium. Selected ores, concentrates, or tailings are leached using aqueous chlorine-containing media in two stages until uranium, radium, and thorium are substantially dissolved. The insoluble residual solids are suitable for disposal, while the leach solution is treated to recover uranium, thorium, and radium using selected techniques. The recovered radium can be disposed of in an environmentally acceptable manner.
Career Highlights
James M Skeaff has worked with Canadian Patents & Development Ltd. and Canadian Patents and Development Limited/Société Canadienne Des Brevets. His career has been marked by a commitment to innovation and the development of technologies that address critical environmental and industrial challenges.
Collaborations
Throughout his career, Skeaff has collaborated with notable individuals such as Gordon M Ritcey and Kazi E Haque. These