This inventor holds 3 USPTO granted patents. Top assignees: 3M Innovative Properties Company, Cri Recycling Service, Inc., Cri Recycling Services, Inc.. Active years: 1997-2001.
Company Filing History:
1 out of 22,361 
1 out of 1 
1 out of 1 Years Active: 1997-2001
Title: John W Summerfield: Innovator in Material Cleaning Technologies
Introduction
John W Summerfield is a notable inventor based in Rosemount, MN (US). He has made significant contributions to the field of material cleaning and recycling, holding a total of 3 patents. His innovative approaches focus on improving the efficiency and effectiveness of cleaning contaminated materials.
Latest Patents
One of his latest patents involves the removal of contaminants from materials. This improved approach utilizes pressurized solvents, including liquid propane, butane, dimethyl ether, and supercritical carbon dioxide. These methods are particularly effective for cleaning sorbent materials, allowing for the recycling of both the sorbent materials and the solvents used. The contaminants, typically oils, are also effectively managed through this process.
Another significant patent is for a cleaning apparatus that employs electromagnetic drying. This system uses dielectric heating to assist in cleaning sorbent materials contaminated with oils. A pressurized solvent is circulated to remove these contaminants, while RF radiation is directed into the vessel to vaporize any residual solvents. This innovative approach not only recovers the solvent but also ensures the removal of volatile compounds from the reclaimed oil and contaminants.
Career Highlights
Throughout his career, John W Summerfield has worked with prominent companies such as Cri Recycling Services, Inc. and 3M Innovative Properties Company. His experience in these organizations has allowed him to develop and refine his innovative cleaning technologies.
Collaborations
John has collaborated with notable coworkers, including Michael Ramsey and John P Markiewicz. These partnerships have contributed to the advancement of his inventions and the successful implementation of his patented technologies.
Conclusion
John W Summerfield is a distinguished inventor whose work in material cleaning technologies has led to significant advancements in the field. His innovative patents and collaborations reflect his commitment to improving recycling processes and contaminant removal methods.