This inventor holds 2 USPTO granted patents. Top assignees: Granit S.a., Grant S.a.. Active years: 1997-2001.
Company Filing History:
Years Active: 1997-2001
Title: Frank Doppenberg: Innovator in Alkaline Solutions and Pulp Production
Introduction
Frank Doppenberg is a notable inventor based in Lausanne, Switzerland. He has made significant contributions to the field of chemical engineering, particularly in the preparation of alkaline solutions and pulp production processes. With a total of 2 patents, Doppenberg's work has had a meaningful impact on industrial applications.
Latest Patents
Doppenberg's latest patents include a method for preparing alkaline solutions containing aromatic polymers. This invention proposes a process that enables the reliable separation of aromatic polymers, which can be precipitated by acidification, from an alkaline solution. This method is particularly useful in treating wastewater from cellulose production. The process involves precipitating the polymers by reducing the pH at a relatively low temperature, typically between 15 and 60 °C. The dispersion is then reheated until it becomes filterable, usually between 50 and 95 °C. The resulting product can be washed and dried at high temperatures, up to 110 °C, without discoloration.
Another significant patent by Doppenberg focuses on the production of pulp by the soda-anthraquinone process (SAP) with recovery. This innovation enhances the efficiency of pulp production, contributing to more sustainable practices in the industry.
Career Highlights
Throughout his career, Frank Doppenberg has worked with various companies, including Grant S.A. and Granit S.A. His expertise in chemical processes has made him a valuable asset in the field of industrial chemistry.
Collaborations
Doppenberg has collaborated with notable individuals such as Alfred Abächerli and Otto W. Gordon. These partnerships have further enriched his work and contributed to the advancements in his areas of expertise.
Conclusion
Frank Doppenberg's contributions to the field of chemical engineering, particularly in the preparation of alkaline solutions and pulp production, demonstrate his innovative spirit and commitment to advancing industrial processes. His patents reflect a deep understanding of chemical processes and their applications in real-world scenarios.