Company Filing History:
Years Active: 1977-1980
Title: Innovations of William H. Lawford
Introduction
William H. Lawford is a notable inventor based in Hawkesbury, Canada. He has made significant contributions to the field of pulp and paper technology, holding 2 patents that showcase his innovative approaches to improving processes in this industry.
Latest Patents
Lawford's latest patents include a method for high yield chemimechanical pulping processes. This improved, three-stage process enhances the production of high yield chemimechanical pulps from wood or other lignocellulosic materials. In the first stage, the material is treated with sulfur dioxide gas or an aqueous solution of sulfur dioxide. The second stage involves sulfonating the wood in an aqueous solution of sodium sulfite at controlled temperatures and pH levels. The final stage subjects the sulfonated wood to mechanical defibration. Another significant patent is a method and apparatus for automatically and simultaneously controlling the solution viscosity and degree of brightness during a bleaching process. This innovation utilizes optical monitoring to regulate the input of bleaching reagents based on the pulp's light reflectance values.
Career Highlights
William H. Lawford has had a distinguished career at Canadian International Paper Company. His work has focused on enhancing the efficiency and effectiveness of pulp production processes, contributing to advancements in the industry.
Collaborations
Throughout his career, Lawford has collaborated with notable coworkers such as John A. Histed and Murray J. McLeod. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
William H. Lawford's contributions to the pulp and paper industry through his patents and career at Canadian International Paper Company highlight his role as an influential inventor. His innovative methods continue to impact the field positively.