Location History:
- Viersen, DE (2005 - 2009)
- Aachen-Brand, DE (2012 - 2019)
Company Filing History:
5 out of 644 
4 out of 532 
1 out of 12,157 
Years Active: 2005-2019
Title: The Innovations of Karl-Heinz Köhler
Introduction
Karl-Heinz Köhler is a notable inventor based in Aachen-Brand, Germany. He has made significant contributions to the field of polycarbonate materials, holding a total of 11 patents. His work focuses on improving the optical and thermal properties of polycarbonates, which are essential in various applications.
Latest Patents
One of Köhler's latest patents is for a polycarbonate composition that boasts improved optical and thermal properties. This invention relates to aromatic polycarbonates that include dioxydiarylcycloalkane structural units. It also describes an enhanced process for producing these polycarbonates from dihydroxydiphenylcycloalkanes, along with mixtures of these polycarbonates with polymers, fillers, dyes, and conventional additives. Another significant patent involves a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters. This method utilizes at least one optionally substituted pyridine or its hydrochloride salt as a catalyst, allowing for the recovery and reinjection of the catalyst back into the process.
Career Highlights
Throughout his career, Köhler has worked with prominent companies such as Covestro Deutschland AG and Bayer MaterialScience AG. His experience in these organizations has allowed him to develop innovative solutions in the field of materials science.
Collaborations
Köhler has collaborated with notable colleagues, including Stephan Konrad and Ricarda Leiberich. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Karl-Heinz Köhler's contributions to the field of polycarbonate materials demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving material properties, which can have a lasting impact on various industries.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.