Company Filing History:
2 out of 8 
1 out of 832,812 Years Active: 1996-2001
Title: Innovations by Johan Devenyns: A Pioneer in Bleaching Processes
Introduction
Johan Devenyns is a notable inventor based in Brussels, Belgium. He has made significant contributions to the field of chemical engineering, particularly in the area of bleaching processes for paper pulp. With a total of 3 patents to his name, Devenyns has developed innovative methods that enhance the efficiency and effectiveness of bleaching treatments.
Latest Patents
Among his latest patents is a multi-stage bleaching process that incorporates a final stabilized peroxide stage. This process is designed for bleaching chemical paper pulp to a brightness of at least 89° ISO. It involves a treatment sequence that includes a final bleaching stage with hydrogen peroxide in an alkaline medium, utilizing at least one stabilizing agent. The process ensures that the pulp's manganese content does not exceed 3 ppm by weight and that it has been delignified to a kappa number not exceeding 5.
Another significant patent by Devenyns is a process for bleaching pulp that includes an enzyme stage. This innovative method employs a sequence of treatment stages that involve at least one stage with an enzyme and at least one stage with a peroxyacid, further advancing the efficiency of pulp bleaching.
Career Highlights
Throughout his career, Johan Devenyns has worked with prominent companies in the chemical industry, including Solvay Interox. His expertise in chemical processes has positioned him as a valuable asset in the field of paper production and bleaching technologies.
Collaborations
Devenyns has collaborated with notable professionals in his field, including Nicholas A Troughton and Francedillaois Desprez. These collaborations have contributed to the development of innovative solutions in chemical engineering.
Conclusion
Johan Devenyns stands out as a pioneering inventor in the realm of bleaching processes for paper pulp. His innovative patents and contributions to the industry reflect his commitment to advancing chemical engineering practices.