Company Filing History:
Years Active: 1980-1998
Title: John H Chapman: Innovator in Kaolin Clay Processing
Introduction
John H Chapman is a notable inventor based in Sandersville, GA (US). He has made significant contributions to the field of kaolin clay processing, holding a total of 2 patents. His work focuses on improving the quality and processing methods of kaolin clay, which is essential for various industrial applications.
Latest Patents
Chapman's latest patents include a two-stage process for delaminating kaolin and methods of clay beneficiation. The two-stage process involves producing a delaminated kaolin clay with a G.E. brightness of at least 85, a solids content of at least 67 percent by weight, and a viscosity below 500 cps. This is achieved by agitating an aqueous slurry of kaolin clay in the presence of hard grinding media, followed by soft grinding media. The result is that at least 80 percent of the delaminated kaolin has an equivalent spherical diameter of less than or equal to 2 microns. His second patent focuses on beneficiating highly discolored clays to produce a clay of acceptable quality for the paper industry. This method involves passing a deflocculated clay suspension through a high-intensity magnetic separator, selectively flocculating the clay, and recovering the flocculated clay by removing the supernatant liquid.
Career Highlights
Throughout his career, John H Chapman has worked with reputable companies such as Yara Engineering Corporation and U.S. Borax, Inc. His experience in these organizations has contributed to his expertise in clay processing and innovation.
Collaborations
Some of his notable coworkers include David Anderson and J Elmo Bloodworth. Their collaboration has likely played a role in advancing the projects they have worked on together.
Conclusion
John H Chapman is a distinguished inventor whose work in kaolin clay processing has led to significant advancements in the industry. His innovative patents and career achievements reflect his dedication to improving clay quality and processing methods.