Inventors with similar research interests:
Location History:
- Wuerseien, DE (2008)
- Wuerselen, DE (2009 - 2015)
- Wurselen, DE (1999 - 2019)
- Würselen, SE (2015 - 2019)
- Würselen, DE (2002 - 2024)
Company Filing History:
172 out of 25,668 
1 out of 832,680 Years Active: 1999-2025
Title: Ralf Keller: A Creative Innovator with 158 Patents
Introduction:
In the field of innovations and patents, Ralf Keller has emerged as a prolific inventor, hailing from Würselen, Germany. With an impressive portfolio of 158 patents, Keller has made significant contributions to the technological landscape. This article delves into his latest patents, career highlights, notable collaborations, and sheds light on his remarkable journey as an inventor.
Latest Patents:
Ralf Keller's most recent patents reflect his expertise in internet protocol multimedia subsystem emergency calls for roaming user equipment and communication establishment. One of his patented technologies involves a method of operating a policy and charging rules function (PCRF) node to handle an internet protocol multimedia subsystem (IMS) emergency call. This method includes determining the identifiers of a user equipment (UE) based on the IP address and transmitting them to the proxy call session control function (P-CSCF).
Another patent focuses on communication establishment. In this aspect, the wireless device receives a redirection instruction to redirect to a second network and selects a procedure (either the first or second) for establishing communication based on the support available in the second network.
Career Highlights:
Ralf Keller has had a remarkable career, during which he has demonstrated exceptional technical skills and innovation. He has worked with prominent companies such as Telefonaktiebolaget Lm Ericsson (publ). At Ericsson, Keller contributed significantly to the development of advanced technologies and solutions. His expertise and dedication have led to the successful implementation of numerous projects and initiatives.
Collaborations:
Throughout his career, Ralf Keller has had the opportunity to collaborate with talented colleagues, further fueling his passion for innovation. Notably, he has worked closely with Fredrik Lindholm and Andreas Witzel, two individuals known for their expertise in the field of telecommunications. Keller's collaborations have fostered an environment conducive to creative thinking and novel solutions.
Conclusion:
Ralf Keller stands out as an exemplary innovator, boasting an impressive patent portfolio comprising technologies that revolutionize emergency call handling and communication establishment. His relentless pursuit of technological advancements, coupled with his collaborations with talented professionals, underscores his commitment to driving progress in the field. As we eagerly await his future contributions, Keller's journey serves as an inspiration to aspiring inventors and reinforces the significance of patents and innovations in shaping our digital world.
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