Company Filing History:
7 out of 12 
1 out of 14 Years Active: 1998-2013
Title: Innovations of John S Roulston
Introduction
John S Roulston is a notable inventor based in Lompoc, CA (US). He has made significant contributions to the field of filtration and polishing materials, holding a total of 8 patents. His work focuses on enhancing the properties of diatomite and perlite ores for various applications.
Latest Patents
Roulston's latest patents include innovative products such as filter aids made from low permeability diatomites. These diatomite filter aid products are designed to improve permeabilities and flow characteristics. The methods disclosed involve pre-agglomerating the ore with minimal water and subjecting it to calcination processes. Additionally, he has developed an unexpanded perlite ore polishing composition. This composition features a specific distribution of particle sizes that allows for effective polishing while maintaining a low level of abrasiveness.
Career Highlights
Throughout his career, Roulston has worked with reputable companies such as Advanced Minerals Corporation and Imerys Filtration Minerals, Inc. His expertise in the field has led to advancements in the processing and application of diatomite and perlite materials.
Collaborations
Roulston has collaborated with professionals like Scott Kevin Palm and Timothy R Smith, contributing to the development of innovative solutions in his field.
Conclusion
John S Roulston's contributions to the invention of filtration and polishing materials demonstrate his commitment to innovation. His patents reflect a deep understanding of material properties and their applications in various industries.