Company Filing History:
Years Active: 2003-2006
Title: Paul G Spencer: Innovator in Silica Glass Crucibles
Introduction
Paul G Spencer is a notable inventor based in Stevenson, WA (US). He has made significant contributions to the field of materials science, particularly in the development of silica glass crucibles. With a total of 3 patents to his name, Spencer's work has advanced the technology used in various industrial applications.
Latest Patents
One of Spencer's latest patents is for a silica glass crucible, which is manufactured by introducing bulk silica grain into a rotating crucible mold. This process forms a bulky wall that includes both a bottom wall and a side wall. After heating the interior of the mold to begin fusing the bulk silica grains, an inner silica grain doped with aluminum is introduced. The heat at least partially melts the inner silica grain, allowing it to fuse to the wall and form an inner layer. The crucible is then cooled, resulting in the fused silica grains forming nuclei of crystalline silica within the inner layer.
Another significant patent is for a silica crucible with an inner layer crystallizer and method. This crucible features a barium-doped inner wall layer. Similar to the previous patent, it is made by introducing bulk silica grain into a rotating crucible mold. After heating the interior of the mold to fuse the bulk silica grains, an inner silica grain doped with barium is introduced. The heat partially melts the inner silica grain, allowing it to fuse to the wall and form an inner layer. This inner layer crystallizes when used in a Czochralski (CZ) process, extending the operating life of the crucible.
Career Highlights
Throughout his career, Paul G Spencer has worked with prominent companies such as Heraeus Shin-Etsu America, Inc. and Heraeus Shin-Etsu America. His experience in these organizations has contributed to his expertise in the field of silica glass technology.
Collaborations
Spencer has collaborated with notable professionals in his field, including Katsuhiko Kemmochi and Robert O Mosier. These collaborations have likely enriched his work and contributed to the advancements in silica glass crucible technology.
Conclusion
Paul G Spencer's innovative work in the development of silica glass crucibles has made a significant impact in the industry. His patents reflect a deep understanding of materials science and a commitment to enhancing the