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Sii Crystal Technology Inc.

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USPTO Granted Patents = 35

% Expired Patents = 54.3

Forward Citations = 19

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15 inventors (with patents filed for the assignee):

Takashi Kobayashi (13 out of 141 patents)

Masanori Tamura (6 out of 7 patents)

Naoya Ichimura (6 out of 6 patents)

4. Daishi Arimatsu (5 out of 6 patents)

5. Kiyoshi Aratake (3 out of 31 patents)

6. Kazuyoshi Sugama (2 out of 40 patents)

7. Takafumi Sarata (1 out of 17 patents)

8. Saiichirou Ohtsuka (1 out of 1 patent)

9. Yoshikazu Kato (1 out of 1 patent)

10. Junya Fukuda (1 out of 10 patents)

11. Mitsuo Tomiyama (1 out of 2 patents)

12. Yumi Yamaguchi (1 out of 1 patent)

13. Motoki Shibuya (1 out of 1 patent)

14. Tomohiro Momose (1 out of 1 patent)

15. Chisato Ojima (1 out of 1 patent)

Core Competencies:

Piezoelectric Vibrator

Oscillator

Electronic Device

Radio Timepiece

Vibrating Piece

Manufacturing Method

Vibration Reed

Improved Drive Characteristics

Reduced Resistance

High-Order Vibration Suppression

Wafer

35 patents: Sort by Forward Citations

1. 11831296 - Piezoelectric vibrator element, piezoelectric vibrator, oscillator, and method of manufacturing piezoelectric vibrator element (2023-11-28),

2. 10608558 - Wafer, piezoelectric vibrator element, and piezoelectric vibrator (2020-03-31),

3. 10263588 - Method of manufacturing piezoelectric vibrator element, piezoelectric vibrator element, and piezoelectric vibrator (2019-04-16),

4. 10249813 - Method of manufacturing piezoelectric vibrator element (2019-04-02),

5. 9871470 - Piezoelectric vibrator element, and piezoelectric vibrator (2018-01-16),

6. 9871469 - Piezoelectric vibrator element, and piezoelectric vibrator (2018-01-16),

7. 9748467 - Piezoelectric vibrator (2017-08-29),

8. 9590588 - Piezoelectric vibrating piece and piezoelectric vibrator (2017-03-07),

9. 9584094 - Piezoelectric vibrating reed and piezoelectric vibrator (2017-02-28),

10. 9548718 - Piezoelectric vibration piece and piezoelectric vibrator (2017-01-17),

11. 9509277 - Piezoelectric vibrator and method of manufacturing piezoelectric vibrator (2016-11-29),

12. 9503048 - Piezoelectric vibrating reed and piezoelectric vibrator (2016-11-22),

13. 9391259 - Piezoelectric vibrating piece and piezoelectric vibrator (2016-07-12),

14. 9184726 - Piezoelectric vibrating strip, piezoelectric vibrator, oscillator, electronic device, and radio timepiece (2015-11-10),

15. 9148120 - Piezoelectric vibrating piece having reduced resistance and high-order vibration suppression (2015-09-29),

Company Overview

Sii Crystal Technology Inc. is a prominent player in the field of advanced crystal technology, specializing in the development and manufacturing of high-quality crystal materials. The company focuses on applications in various sectors, including telecommunications, electronics, and precision instruments. Based in Chiba, Japan, Sii Crystal Technology leverages its expertise in crystal growth and processing to deliver innovative solutions that meet the evolving demands of technology and industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

35 Patents

#27 in Chiba

#2,133 in Japan

#19,187 in the World

Sii Crystal Technology Inc.

Forward Citations = 19

15 inventors:

Takashi Kobayashi (13 out of 141 patents)

Masanori Tamura (6 out of 7 patents)

Naoya Ichimura (6 out of 6 patents)

4. Daishi Arimatsu (5 out of 6 patents)

5. Kiyoshi Aratake (3 out of 31 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sii Crystal Technology Inc.. Retrieved from https://idiyas.com/company/sii-crystal-technology

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

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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