Company Filing History:
2 out of 2,544 
2 out of 85 
1 out of 1 Years Active: 1987-2000
Title: Guido Keller: Innovator in Printing Technology
Introduction
Guido Keller is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of printing technology, particularly in the control of the inking process in offset printing machines. With a total of 4 patents to his name, Keller's work has advanced the efficiency and quality of printing processes.
Latest Patents
One of Keller's latest patents focuses on a process and apparatus for controlling the inking process in printing. This innovation improves the control of the inking process by evaluating color measuring fields on printed sheets using colorimetric methods rather than traditional densitometric approaches. By employing spectral measurements, Keller's method allows for the matching of colors and the calculation of color coordinates, which are then compared with set reflections or color coordinates. The resulting color deviations are utilized to control the inking process effectively. Furthermore, the spectral reflections are converted into filter color densities, enabling conventional control of the inking process. This dual approach allows for the adaptation of color impressions in critical areas of the print, ensuring consistency with the proof. Additionally, Keller's process addresses color deviations caused by varying material properties and other sources of error.
Career Highlights
Throughout his career, Guido Keller has worked with prominent companies in the printing industry, including Heidelberger Druckmaschinen AG and Gretag Aktiengesellschaft. His experience in these organizations has contributed to his expertise and innovative capabilities in printing technology.
Collaborations
Keller has collaborated with notable professionals in the field, including Helmut Kipphan and Hans Ott. These partnerships have further enriched his work and have led to advancements in printing technology.
Conclusion
Guido Keller's contributions to the printing industry through his innovative patents and collaborations have significantly impacted the efficiency and quality of printing processes. His work continues to influence the field, showcasing the importance of innovation in technology.
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.