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For the Inventor, By the Inventor

Saga, Japan

Makoto Ito

This inventor holds 13 USPTO granted patents. Top assignees: Sumitomo Sitix Corporation, Kyushu Electronic Metal Co., Ltd., Osaka Titanium Co., Ltd.. Active years: 1992-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Makoto Ito. Retrieved from https://idiyas.com/inventor/makoto-ito-llq18hix

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 5

Forward Citations = 70(Granted Patents)


Location History:

  • Kishimagun, JP (1998 - 1999)
  • Amagasaki, JP (1992 - 2000)
  • Saga, JP (1995 - 2003)

Company Filing History:

goldMedal7 out of 40 
 
Sumitomo Sitix Corporation
 patents
silverMedal3 out of 7 
 
Kyushu Electronic Metal Co., Ltd.
 patents
bronzeMedal3 out of 19 
 
Osaka Titanium Co., Ltd.
 patents
4. 3 out of 929 
 
Sumitomo Metal Industries, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1992-2003

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13 patents (USPTO):Explore Patents
1. 6514335 - High-quality silicon single crystal and method of producing the same (2003-02-04),
2. 6458204 - Method of producing high-quality silicon single crystals (2002-10-01),
3. 6302957 - Quartz crucible reproducing method (2001-10-16),
4. 6086670 - Silicon wafer and method for producing the same (2000-07-11),
5. 6080238 - Single crystal pulling method (2000-06-27),
6. 5925147 - Process for producing single crystals (1999-07-20),
7. 5730799 - Device for producing single crystals (1998-03-24),
8. 5611857 - Apparatus for producing single crystals (1997-03-18),
9. 5474019 - Process for producing silicon single crystals (1995-12-12),
10. 5471949 - Apparatus for producing silicon single crystal (1995-12-05),
11. 5392729 - Method of producing silicon single crystal (1995-02-28),
12. 5260037 - Apparatus for producing silicon single crystal (1993-11-09),
13. 5152867 - Apparatus and method for producing silicon single crystal (1992-10-06),

Title: Biography of Inventor Makoto Ito

Introduction: Makoto Ito is a prominent inventor based in Saga, Japan, known for his significant contributions to the field of semiconductor technology. He holds a total of 13 patents, showcasing his innovative approach to producing high-quality silicon single crystals.

Latest Patents: One of his latest patents is focused on a method of producing high-quality silicon single crystals of large diameter and length. This method effectively controls the positions of ring-like oxygen-induced stacking faults and minimizes defects during the crystal pulling process. The wafers produced from this high-quality silicon single crystal exhibit minimal harmful defects, making them suitable for larger scale integration and size reduction in semiconductor devices. Another notable patent involves the Czochralski method for producing high-quality silicon single crystals, which emphasizes maintaining a specific solid-melt interface shape and applying a magnetic field during the pulling process to reduce defects.

Career Highlights: Throughout his career, Makoto Ito has worked with esteemed companies such as Sumitomo Sitix Corporation and Sumitomo Metal Industries, Inc. His work has significantly advanced the production techniques of silicon single crystals, which are crucial for the semiconductor industry.

Collaborations: Makoto has collaborated with notable colleagues, including Kaoru Kuramochi and Kiichiro Kitaura. These collaborations have further enriched his research and development efforts in the field of semiconductor technology.

Conclusion:

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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