This inventor holds 2 USPTO granted patents. Top assignees: Siltronic Ag, Wacker Siltronic Gesellschaft Fur Halbleitermaterialien Ag. Active years: 1999-2008.
Company Filing History:
1 out of 317 
1 out of 44 
Years Active: 1999-2008
Title: Dieter Gräf: Innovator in Silicon Technology
Introduction
Dieter Gräf is a notable inventor based in Burghausen, Germany. He has made significant contributions to the field of silicon technology, particularly in the development of SOI wafers and methods for producing monocrystals. With a total of 2 patents, his work has had a lasting impact on semiconductor manufacturing.
Latest Patents
One of Dieter Gräf's latest patents is for an SOI wafer and method for producing it. This innovation involves constructing an SOI wafer from a carrier wafer and a monocrystalline silicon layer with a thickness of less than 500 nm. The process ensures that an excess of interstitial silicon atoms prevails throughout the silicon layer. The SOI wafers can be prepared using Czochralski silicon single crystal growth, adhering to specific conditions that promote the desired atomic structure.
Another significant patent is a method for producing silicon monocrystals. This method involves maintaining a growing monocrystal within a specified temperature range of 850°C to 1100°C for a defined dwell time. The cooling rate of the growing monocrystal is influenced by a heat shield designed with adjacent annular zones that vary in thermal conduction and heat radiation transparency.
Career Highlights
Dieter Gräf has worked with prominent companies in the semiconductor industry, including Siltronic AG and Wacker Siltronic Gesellschaft für Halbleitermaterialien AG. His experience in these organizations has contributed to his expertise in silicon technology and innovation.
Collaborations
Throughout his career, Dieter has collaborated with notable professionals in the field, including Reinhold Wahlich and Markus Blietz. These collaborations have further enriched his work and contributed to advancements in silicon wafer technology.
Conclusion
Dieter Gräf's contributions to the field of silicon technology through his patents and collaborations highlight his role as an influential inventor. His work continues to shape the future of semiconductor manufacturing.