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Nagasaki, Japan

Sumco Techxiv Corporation

USPTO Granted Patents = 87

EPO Patents = 21

Forward Citations = 256

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160 inventors (with patents filed for the assignee):

Toshimichi Kubota (21 out of 25 patents)

Yasuhito Narushima (20 out of 35 patents)

Fukuo Ogawa (18 out of 25 patents)

4. Shinichi Kawazoe (17 out of 19 patents)

5. Kazuaki Kozasa (8 out of 8 patents)

6. Kazuhiro Narahara (6 out of 13 patents)

7. Tomonori Kawasaki (6 out of 6 patents)

8. Shinya Sadohara (5 out of 6 patents)

9. Shigeo Morimoto (4 out of 27 patents)

10. Tomohiro Fukuda (4 out of 4 patents)

11. Daisuke Ebi (4 out of 7 patents)

12. Yutaka Shiraishi (4 out of 15 patents)

13. Shiro Yoshino (4 out of 8 patents)

14. Masayuki Uto (3 out of 8 patents)

15. Hiroshi Inagaki (3 out of 28 patents)

Core Competencies:

Silicon Single Crystal

Epitaxial Silicon Wafer

Semiconductor Wafer

Doping Apparatus

Polishing Semiconductor Wafer

Silicon Ingot Production

Etching Method

Single Crystal Pulling Device

Wafer Grinding

Contamination Prevention

Silicon Wafer Heat Treatment

Vapor Phase Epitaxy

87 patents: Sort by Forward Citations

1. 10553420 - Method and device for polishing semiconductor wafer (2020-02-04),

2. 10294583 - Producing method and apparatus of silicon single crystal, and silicon single crystal ingot (2019-05-21),

3. 10233562 - Method for producing single crystal, and method for producing silicon wafer (2019-03-19),

4. 10227710 - Manufacturing method of silicon monocrystal (2019-03-12),

5. 9975217 - Scattering plate, grinding wheel, and grinding device (2018-05-22),

6. 9876078 - Method for slicing semiconductor single crystal ingot (2018-01-23),

7. 9758899 - Manufacturing method of silicon single crystal having low-resistivity electrical characteristics (2017-09-12),

8. 9758871 - Method and apparatus for manufacturing epitaxial silicon wafer (2017-09-12),

9. 9755022 - Epitaxial silicon wafer having reduced stacking faults (2017-09-05),

10. 9425264 - Method for growing an epitaxial film on a phosphorous-doped silicon wafer (2016-08-23),

11. 9305850 - Etching method and etching apparatus of semiconductor wafer (2016-04-05),

12. 9293318 - Semiconductor wafer manufacturing method (2016-03-22),

13. 9212431 - Silicon single crystal pulling device and graphite member used therein (2015-12-15),

14. 9181631 - Silicon crystalline material and method for manufacturing the same (2015-11-10),

15. 9080251 - Single crystal silicon pulling device, method for preventing contamination of silicon melt, and device for preventing contamination of silicon melt (2015-07-14),

SUMCO TECHXIV CORPORATION is a leading semiconductor manufacturing company specializing in the production of silicon wafers. With a vast experience of over 40 years in the industry, we are committed to delivering high-quality and innovative solutions to our global customers. Our advanced technologies and state-of-the-art facilities enable us to meet the demands of various industries, including electronics, automotive, telecommunications, and more. As a trusted partner, we strive to contribute to the advancement of technology and the growth of our clients' businesses.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

87 Patents

#1 in Nagasaki

#1,201 in Japan

#8,491 in the World

Nagasaki, Japan

Sumco Techxiv Corporation

Forward Citations = 256

160 inventors:

Toshimichi Kubota (21 out of 25 patents)

Yasuhito Narushima (20 out of 35 patents)

Fukuo Ogawa (18 out of 25 patents)

4. Shinichi Kawazoe (17 out of 19 patents)

5. Kazuaki Kozasa (8 out of 8 patents)

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