Location History:
- Karhula, both of, FI (2002)
- Karhula, FI (1993 - 2011)
- Kotka, FI (1996 - 2022)
Company Filing History:
7 out of 114 
4 out of 230 
1 out of 50 
Years Active: 1993-2025
Title: Biography of Inventor Kari Peltonen
Introduction
Kari Peltonen is a notable inventor based in Kotka, Finland. She has made significant contributions to the field of cellulose processing, holding a total of 15 patents. Her innovative work focuses on improving the production processes of microcrystalline cellulose.
Latest Patents
One of her latest patents is a process for producing microcrystalline cellulose from fibrous cellulosic material through acid hydrolysis at an MCC plant. This process involves thickening a suspension of cellulosic pulp to form filtrate, adjusting the consistency to 5-40% by adding dilution liquid, and lowering the pH to 4 or less with acid. The pulp suspension undergoes acid hydrolysis at temperatures of at least 120° C. in a reactor, resulting in a mixture of microcrystalline cellulose and hydrolysate. The mixture is then discharged to a lower pressure and temperature to flash the mixture and generate flash steam. Microcrystalline cellulose is separated from the hydrolysate, and the separated cellulose is washed and thickened for further processing. Another significant patent involves an arrangement and method for controlling gas flow separated from a suspension of medium consistency pulp, utilizing a degassing centrifugal pump and a pressurized degassing vessel.
Career Highlights
Kari Peltonen has worked with prominent companies in the industry, including Andritz Oy and Ahlstrom Corporation.