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Piedek Technical Laboratory

USPTO Granted Patents = 53

% Expired Patents = 49.1

Forward Citations = 379

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1 inventor (with patents filed for the assignee):

Hirofumi Kawashima (53 out of 64 patents)

Core Competencies:

Quartz Crystal Resonator

Quartz Crystal Unit

Quartz Crystal Oscillator

Piezoelectric Crystal

Tuning Fork Resonator

Electronic Apparatus

Manufacturing Method

Width-Extensional Mode

53 patents: Sort by Forward Citations

1. 11563406 - Quartz crystal resonator, quartz crystal unit, and quartz crystal oscillator (2023-01-24),

2. 11005420 - Quartz crystal unit, quartz crystal oscillator and electronic apparatus (2021-05-11),

3. 10594259 - Resonator, unit and oscillator (2020-03-17),

4. 10284143 - Quartz crystal unit, quartz crystal oscillator and electronic apparatus (2019-05-07),

5. 10199556 - Unit, oscillator and electronic apparatus (2019-02-05),

6. 9553560 - Quartz crystal unit, quartz crystal oscillator and electronic apparatus (2017-01-24),

7. 9431957 - Unit, oscillator and electronic apparatus (2016-08-30),

8. RE45829 - Method for manufacturing a quartz crystal unit (2015-12-28),

9. 9209381 - Quartz crystal unit, quartz crystal oscillator and electronic apparatus (2015-12-08),

10. 9203135 - Method for manufacturing quartz crystal resonator (2015-12-01),

11. 9077308 - Method for manufacturing a quartz crystal unit, quartz crystal oscillator and electronic apparatus (2015-07-07),

12. RE45582 - Method for manufacturing a quartz crystal unit (2015-06-22),

13. 8866567 - Quartz crystal unit, quartz crystal oscillator and electronic apparatus (2014-10-21),

14. 8806738 - Method for manufacturing quartz crystal unit, quartz crystal oscillator and electronic apparatus (2014-08-19),

15. 8766516 - Unit, oscillator and electronic apparatus (2014-07-01),

Piedek Technical Laboratory, based in Tokyo, specializes in the development and manufacturing of advanced quartz crystal technology. The company focuses on key areas such as quartz crystal resonators, oscillators, and units, leveraging piezoelectric properties to enhance electronic applications. Their expertise extends to tuning fork resonators and innovative manufacturing methods, positioning them as a significant player in the electronics sector. Piedek's commitment to precision and quality supports a wide range of electronic apparatus, catering to diverse industry needs.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

53 Patents

#774 in Tokyo

#1,647 in Japan

#13,309 in the World

Piedek Technical Laboratory

Forward Citations = 379

1 inventor:

Hirofumi Kawashima (53 out of 64 patents)

Please report any incorrect information to [email protected]

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