Company Filing History:
5 out of 664 
2 out of 2 
2 out of 3 Years Active: 1997-2005
Title: The Innovative Contributions of Roger O Campbell
Introduction
Roger O Campbell is a notable inventor based in Federal Way, WA (US). He has made significant contributions to the field of mechanical pulp bleaching, holding a total of 8 patents. His work has advanced methods that enhance the efficiency and effectiveness of pulp processing in the paper industry.
Latest Patents
Among his latest patents, Campbell has developed innovative methods for bleaching mechanical pulp. One of his notable patents is focused on refiner bleaching with magnesium oxide and hydrogen peroxide. This method introduces a source of magnesium ions and hydroxyl ions to a refiner, allowing wood particulates to be refined into pulp while simultaneously bleaching it. Another significant patent involves high-temperature peroxide bleaching of mechanical pulps. This method outlines a process for pulping mills that includes providing cellulosic materials, such as wood chips, and utilizing a bleaching liquor containing hydrogen peroxide and alkali. The process is designed to enhance the brightness of the pulp while maintaining efficiency.
Career Highlights
Throughout his career, Roger O Campbell has worked with prominent companies in the industry, including Weyerhaeuser Company Limited and North American Paper Corporation. His experience in these organizations has contributed to his expertise in pulp processing and bleaching technologies.
Collaborations
Campbell has collaborated with several professionals in his field, including Jerry R Speaks and Michael A Veal. These collaborations have likely enriched his work and led to further innovations in pulp bleaching methods.
Conclusion
Roger O Campbell's contributions to the field of mechanical pulp bleaching demonstrate his commitment to innovation and efficiency in the paper industry. His patents reflect a deep understanding of the processes involved and a dedication to improving them.