Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12392050 | Infrared transmissivity measurement method of quartz glass crucible | Ken Kitahara, Hiroshi Kishi, Tomokazu Katano, Eriko Kitahara | 2025-08-19 |
| 12091346 | Apparatus and method for manufacturing silica glass crucible | Takeshi Fujita | 2024-09-17 |
| 11939695 | Quartz glass crucible, manufacturing method of silicon single crystal using the same, and infrared transmissivity measurement method and manufacturing method of quartz glass crucible | Ken Kitahara, Hiroshi Kishi, Tomokazu Katano, Eriko Kitahara | 2024-03-26 |
| 11703452 | Method and apparatus for measuring transmittance of quartz crucible | Yasunobu Shimizu, Keiichi Takanashi, Takeshi Fujita, Eriko Kitahara | 2023-07-18 |
| 10822716 | Quartz glass crucible and manufacturing method thereof | Hiroshi Kishi | 2020-11-03 |
| 9196722 | Semiconductor device and method of manufacturing semiconductor device | Nobuki Miyakoshi | 2015-11-24 |
| 8696813 | Method of manufacturing silicon single crystal, apparatus for pulling silicon single crystal and vitreous silica crucible | Hideki Watanabe, Nobumitsu Takase | 2014-04-15 |
| 8657957 | Method and apparatus for manufacturing fused silica crucible, and the fused silica crucible | Hiroshi Kishi, Masaki Morikawa | 2014-02-25 |
| 8506708 | Silica glass crucible for pulling up silicon single crystal, method for manufacturing thereof and method for manufacturing silicon single crystal | Satoshi Kudo | 2013-08-13 |
| 8449352 | Carbon electrode grinding apparatus | Minoru Shirakawa, Tadashi Nemoto, Tadashi Sato | 2013-05-28 |
| 8449676 | Silica glass crucible | Hiroshi Kishi | 2013-05-28 |
| 8416833 | Arc discharge method, arc discharge apparatus, and fused silica crucible manufacturing apparatus | Hiroshi Kishi, Masaki Morikawa | 2013-04-09 |
| 8240169 | Vitreous silica crucible manufacturing apparatus | Hiroshi Kishi, Masaki Morikawa | 2012-08-14 |
| 8172942 | Arc discharge apparatus, apparatus and method for manufacturing vitreous silica glass crucible, and method for pulling up silicon single crystal | Koichi Suzuki, Takeshi Fujita | 2012-05-08 |
| 8053080 | Modification process of synthetic silica powder and its quartz glass product | Takahiro Satoh | 2011-11-08 |
| 7905112 | Reforming process of quartz glass crucible | Masaru Satoh | 2011-03-15 |
| 7736613 | Modification process of synthetic silica powder and its quartz glass product | Takahiro Satoh | 2010-06-15 |
| 7160387 | High purity silica crucible by electrolytic refining, and its production method and pulling method | Hiroshi Kishi, Yoshiyuki Tsuji | 2007-01-09 |
| 6911080 | Evaluation process of reactivity of silica glass with silicon melt and vibration at its surface, and silica glass crucible not causing the surface vibration | Hiroshi Kishi, Minoru Kanda | 2005-06-28 |
| 6853673 | Process and device for producing a quartz glass crucible by ring-like arc, and its quartz glass crucible | Masaru Satoh | 2005-02-08 |
| 6826927 | Synthetic quartz powder, its production process, and synthetic quartz crucible | Takahiro Sato | 2004-12-07 |
| 6808744 | Method for preparing and regenerating a composite crucible | Yoshiyuki Tsuji, Ken-ichi Hiroshima | 2004-10-26 |
| 6563169 | Semiconductor device with high withstand voltage and a drain layer having a highly conductive region connectable to a diffused source layer by an inverted layer | Nobuki Miyakoshi, Hideyuki Nakamura | 2003-05-13 |
| 6524668 | Composite crucible, and preparation method and regeneration method thereof | Yoshiyuki Tsuji, Ken-ichi Hiroshima | 2003-02-25 |
| 6171805 | DNA and host cells encoding a cell surface protein of Porphyromonas gingivalis | Hideharu Mori, Mamoru Hasegawa, Kenji Yasuda, Keiko Yamada, Shusaburo Hokukoku +1 more | 2001-01-09 |