Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12330194 | Cleaning system and cleaning method | Atsushi Yoshida, Masahiko Ishida | 2025-06-17 |
| 12312691 | Method of manufacturing polycrystalline silicon rod | Masahiko Ishida, Tetsuro Okada | 2025-05-27 |
| 12162762 | Polycrystalline silicon rod | Shigeyoshi Netsu, Tetsuro Okada, Masahiko Ishida | 2024-12-10 |
| 12060277 | Method for producing polycrystalline silicon | Yasushi Kurosawa, Shigeyoshi Netsu | 2024-08-13 |
| 11673809 | Apparatus for manufacturing polysilicon rod | Tetsuro Okada, Masahiko Ishida | 2023-06-13 |
| 11565939 | Silicon core wire | Tetsuro Okada, Masahiko Ishida | 2023-01-31 |
| 11519069 | Polycrystalline silicon manufacturing apparatus | Tetsuro Okada, Masahiko Ishida | 2022-12-06 |
| 11505862 | Method for preventing contamination of base plate | Tetsuro Okada, Masahiko Ishida | 2022-11-22 |
| 11345603 | Polycrystalline silicon bar, polycrystalline silicon rod, and manufacturing method thereof | Tetsuro Okada, Masahiko Ishida | 2022-05-31 |
| 11326257 | Polycrystalline silicon manufacturing apparatus | Tetsuro Okada, Masahiko Ishida | 2022-05-10 |
| 11242620 | Polycrystalline silicon rod and method for producing polycrystalline silicon rod | Shuichi Miyao, Tetsuro Okada, Shigeyoshi Netsu, Masahiko Ishida | 2022-02-08 |
| 10914021 | Polycrystalline silicon rod and method for producing single crystal silicon | Shuichi Miyao, Masahiko Ishida, Shigeyoshi Netsu | 2021-02-09 |
| 10870581 | Reaction furnace for producing polycrystalline silicon, apparatus for producing polycrystalline silicon, method for producing polycrystalline silicon, and polycrystalline silicon rod or polycrystalline silicon ingot | Shigeyoshi Netsu, Tetsuro Okada, Hiroshi Saito | 2020-12-22 |
| 10858258 | Reaction furnace for producing polycrystalline silicon, apparatus for producing polycrystalline silicon, method for producing polycrystalline silicon, and polycrystalline silicon rod or polycrystalline silicon ingot | Shigeyoshi Netsu, Tetsuro Okada, Hiroshi Saito | 2020-12-08 |
| 10858259 | Reactor for polycrystalline silicon production and method for producing polycrystalline silicon | Yasushi Kurosawa, Shigeyoshi Netsu | 2020-12-08 |
| 10760180 | Polycrystalline silicon ingot, polycrystalline silicon bar, and method for producing single crystal silicon | Shuichi Miyao, Shigeyoshi Netsu, Tetsuro Okada | 2020-09-01 |
| 9437429 | Polycrystalline silicon manufacturing apparatus and polycrystalline silicon manufacturing method | Yasushi Kurosawa, Shigeyoshi Netsu | 2016-09-06 |
| 9394606 | Production method for polycrystalline silicon, and reactor for polycrystalline silicon production | Yasushi Kurosawa, Shigeyoshi Netsu, Tetsuro Okada | 2016-07-19 |