Company Filing History:
6 out of 103 
3 out of 240 
3 out of 172 
Years Active: 1987-2024
Title: Discovering the Innovations of Torstein Obrestad
Introduction
Torstein Obrestad, an accomplished inventor based in Ulefoss, Norway, has made significant contributions to the field of agriculture with his innovative inventions in fertilizer technology. With a total of 14 patents, he has been at the forefront of developing advanced fertilizer compositions that enhance agricultural productivity.
Latest Patents
Among his latest innovations is a groundbreaking patent concerning calcium nitrate and potassium nitrate fertilizer particles. This invention presents a unique composition that enables the production of fertilizer particles comprising 43 to 47% w/w calcium nitrate and 46 to 54% w/w potassium nitrate through a melt granulation process. The challenge of undercooling problems had previously hindered the industrial production of such particles. However, Obrestad’s disclosure introduces a method to create a low viscosity melt with a short solidification time by successfully reducing the water content of the fertilizer melt to less than 3% w/w. This advancement promises improved efficiency and viability in fertilizer production.
Career Highlights
Obrestad's innovative journey has been closely tied to prominent companies such as Yara International ASA and Norsk Hydro ASA. His work within these organizations has allowed him to collaborate with fellow experts in the field and refine his technological contributions. With each patent, Obrestad has demonstrated a commitment to enhancing the effectiveness of fertilizers, thereby supporting agricultural practices.
Collaborations
Throughout his career, Torstein Obrestad has collaborated with notable individuals like Jan Birger Isaksen and Terje Tande. These partnerships have fostered an environment of creativity and innovation, aiding in the development of cutting-edge agricultural solutions that tackle efficiency and productivity in the realm of fertilizer application.
Conclusion
Torstein Obrestad's dedication to improving agricultural practices through innovative fertilizer technologies underscores his position as a key figure in the industry. With 14 patents to his name, his work not only enhances the production processes of fertilizers but also contributes to sustainable farming practices. His contributions reflect the importance of innovation in the agricultural sector, promising a brighter future for food production globally.