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For the Inventor, By the Inventor

Saitama, Japan

Manabu Ishikawa

This inventor holds 8 USPTO granted patents and 4 published patent applications. Top assignee: Nihon Dempa Kogyo Co., Ltd.. Active years: 2013-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Manabu Ishikawa. Retrieved from https://idiyas.com/inventor/manabu-ishikawa-wozqq30z

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

Calculating rank
USPTO Granted Patents = 8 

% Patents Active = 12.5

Average Co-Inventor Count = 3.6

ph-index = 3

Forward Citations = 18(Granted Patents)


Location History:

  • Sayama, JP (2013)
  • Saitama, JP (2013 - 2015)

Company Filing History:

goldMedal8 out of 631 
 
Nihon Dempa Kogyo Co., Ltd.
 patents

Years Active: 2013-2015

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8 patents (USPTO):Explore Patents
1. 9018826 - Mesa-type quartz-crystal vibrating piece and quartz crystal device (2015-04-28),
2. 8830004 - Crystal resonator and crystal oscillator (2014-09-09),
3. 8580126 - Piezoelectric vibrating pieces comprising edge mesa steps, and methods for manufacturing same (2013-11-12),
4. 8541928 - Quartz-crystal devices exhibiting reduced crystal impedance (2013-09-24),
5. 8525394 - Mesa-type AT-cut quartz-crystal vibrating piece and quartz-crystal device (2013-09-03),
6. 8519601 - Crystal device and inspection method of crystal device (2013-08-27),
7. 8415858 - Piezoelectric vibrating pieces and devices, and methods for manufacturing same (2013-04-09),
8. 8405286 - Mesa-type at-cut quartz-crystal vibrating piece and the quartz-crystal device (2013-03-26),

Title: Manabu Ishikawa: Innovator in Quartz Crystal Technology

Introduction

Manabu Ishikawa is a prominent inventor based in Saitama, Japan. He has made significant contributions to the field of quartz crystal technology, holding a total of 8 patents. His work focuses on enhancing the performance and efficiency of quartz crystal devices, which are essential in various electronic applications.

Latest Patents

Ishikawa's latest patents include innovative designs such as the mesa-type quartz-crystal vibrating piece and a crystal resonator with a crystal oscillator. The mesa-type quartz-crystal vibrating piece features a quadrangular shape with excitation electrodes and extraction electrodes strategically placed to optimize performance. This design allows for precise control of the oscillating frequency, which is crucial for maintaining stability in electronic devices. The crystal resonator comprises two vibrating regions with different thicknesses and orientations, enabling independent vibration and improved temperature compensation. This advancement helps in suppressing the complexity of crystal oscillators, making them more efficient.

Career Highlights

Manabu Ishikawa is currently employed at Nihon Dempa Kogyo Co., Ltd., a leading company in the quartz crystal industry. His work has not only advanced the technology but has also contributed to the company's reputation as a pioneer in the field. His innovative designs have paved the way for new applications in electronics, enhancing the functionality of various devices.

Collaborations

Ishikawa has collaborated with notable colleagues such as Kenji Shimao and Hiroyuki Sasaki. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.

Conclusion

Manabu Ishikawa's contributions to quartz crystal technology exemplify the impact of innovation in the electronics industry. His patents reflect a commitment to advancing technology and improving device performance. Through his work at Nihon Dempa Kogyo Co., Ltd., he continues to shape the future of quartz crystal applications.

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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