This inventor holds 2 USPTO granted patents, plus 1 CIPO patent. Top assignee: Eka Nobel Ab. Active years: 1992-1994.
Company Filing History:
Years Active: 1992-1994
Title: The Innovations of Per G Lundgren
Introduction
Per G Lundgren is a notable inventor based in Varobacka, Sweden. He has made significant contributions to the field of pulp bleaching and delignification. With a total of 2 patents, his work focuses on improving the efficiency and environmental impact of chemical processes in the pulp industry.
Latest Patents
Lundgren's latest patents include a process for bleaching lignocellulose-containing pulps. This invention relates to a method that enhances the efficiency of a peroxide-containing treatment stage. It involves treating the pulp with a complexing agent before the peroxide step, which alters the trace metal profile of the pulp. This treatment occurs in the absence of sulphite, at a pH ranging from 3.1 to 9.0 and at temperatures between 10°C and 100°C. The subsequent peroxide treatment is carried out at a pH between 7 and 13, allowing for flexibility in the bleaching sequence applied to the pulp.
Another significant patent by Lundgren is a process for reducing the amount of halogenated organic compounds during the delignification and bleaching of chemically digested lignocellulose-containing pulp. This method aims to minimize the formation and discharge of harmful compounds while maintaining pulp quality. The process replaces prebleaching with halogen-containing agents with a treatment involving a complexing agent at elevated temperatures and a pH from 3.1 to 9.0, followed by the use of a peroxide-containing compound under alkaline conditions.
Career Highlights
Throughout his career, Lundgren has worked with several companies, including Eka Nobel AB and Lillemor K Holtinger. His experience in these organizations has contributed to his expertise in the field of pulp processing and environmental sustainability.
Collaborations
Lundgren has collaborated with notable coworkers such as Marie R Samuelsson and Lillemor K Holtinger. Their joint efforts have further advanced the innovations in pulp bleaching technologies.
Conclusion
Per G Lundgren's contributions to the field of pulp bleaching and delignification demonstrate his commitment to innovation and environmental responsibility. His patents reflect a deep understanding of chemical processes and their implications for the industry.