logo

For the Inventor, By the Inventor

Tokyo, Japan

Takeshi Sakashita

This inventor holds 72 USPTO granted patents and 10 published patent applications and 2 EPO patents, primarily in Acoustic Wave Devices (CPC class H03H). Top assignees: Taiyo Yuden Co., Ltd., Ricoh Company, Ltd., Fujitsu Media Devices Limited. Active years: 1996-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeshi Sakashita. Retrieved from https://idiyas.com/inventor/takeshi-sakashita

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

Calculating rank
USPTO Granted Patents = 72 

% Patents Active = 79.2

 

Average Co-Inventor Count = 4.3

ph-index = 10

Forward Citations = 316(Granted Patents)

Forward Citations (Not Self Cited) = 267(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Iwakuni City, Yamaguchi Prefecture, JP (1996)
  • Ikeda, JP (2010)
  • Kanagawa, JP (2010)
  • Osaka, JP (2009 - 2012)
  • Kawasaki, JP (2004 - 2014)
  • Hyogo, JP (2015 - 2016)
  • Tokyo, JP (2012 - 2021)

Company Filing History:

goldMedal33 out of 1,769 
 
Taiyo Yuden Co., Ltd.
 patents
silverMedal22 out of 28,957 
 
Ricoh Company, Ltd.
 patents
bronzeMedal16 out of 158 
 
Fujitsu Media Devices Limited
 patents
4. 14 out of 39,378 
 
Fujitsu Corporation
 patents
5. 1 out of 86 
 
Eudyna Devices Inc.
 patents
6. 2 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1996-2021

Loading Chart...
Loading Chart...
Areas of Expertise:
Piezoelectric Thin Film
Resonator
Filter
Multiplexer
Acoustic Wave Device
Image Forming Apparatus
Duplexer
Communication Module
Transfer Device
Toner Collection Unit
Powder Transport Device
Elastic Wave Device
72 patents (USPTO):Explore Patents
1. 11075614 - Piezoelectric thin film resonator, filter, and multiplexer (2021-07-27),
2. 11069615 - Inductor, filter, and multiplexer (2021-07-20),
3. 10886889 - Acoustic wave device and method of fabricating the same, filter and multiplexer (2021-01-05),
4. 10763818 - Acoustic wave device (2020-09-01),
5. 10324404 - Belt device including a coated driving rotator, transfer device, and image forming apparatus (2019-06-18),
6. 10270422 - Piezoelectric thin film resonator, filter, and multiplexer (2019-04-23),
7. 10250218 - Piezoelectric thin film resonator and filter (2019-04-02),
8. 9857734 - Image forming apparatus (2018-01-02),
9. 9817340 - Image forming apparatus that performs a refreshing operation (2017-11-14),
10. 9787282 - Piezoelectric thin film resonator, filter and duplexer (2017-10-10),
11. 9772601 - Image forming apparatus and process unit (2017-09-26),
12. 9748925 - Piezoelectric thin film resonator including an insertion film, filter, and duplexer (2017-08-29),
13. 9595941 - Filter and duplexer with resonators having insertion films of different widths (2017-03-14),
14. 9531342 - Piezoelectric thin film resonator, filter and duplexer (2016-12-27),
15. 9496848 - Piezoelectric thin-film resonator, filter and duplexer utilizing a piezoelectric film having an air space (2016-11-15),

Title: Takeshi Sakashita: Pioneering Innovator Shaping Japan's Technological Landscape

Introduction:

Takeshi Sakashita, a visionary inventor based in Tokyo, Japan, has left an indelible mark on the world of technology with his relentless pursuit of innovation and commitment to excellence. With 72 patents to his name, Sakashita-san continues to inspire the next generation of inventors both in Japan and beyond.

Latest Patents:

Among his latest patents is a groundbreaking Piezoelectric Thin Film Resonator, Filter, and Multiplexer. This innovative technology showcases Sakashita's expertise in developing advanced resonator designs that are crucial for enhancing the performance of various electronic devices. Additionally, his work on the Inductor, Filter, and Multiplexer highlights his ingenuity in creating efficient wiring solutions that optimize electrical conductivity.

Career Highlights:

Sakashita-san has made significant contributions to the tech industry through his tenure at esteemed companies such as Taiyo Yuden Co., Ltd. and Ricoh Company, Ltd. His innovative spirit and technical acumen have played a pivotal role in driving technological advancements within these organizations, cementing his reputation as a trailblazer in the field of electronics.

Collaborations:

Throughout his career, Takeshi Sakashita has collaborated with notable colleagues, including Tokihiro Nishihara and Tsuyoshi Yokoyama. These collaborations have not only facilitated the exchange of ideas and expertise but have also resulted in the development of cutting-edge solutions that have shaped the landscape of modern electronics.

Conclusion:

Takeshi Sakashita's passion for innovation and his exceptional track record in the realm of technology underscore his status as a leading figure in the field of electronics. His groundbreaking inventions and unwavering dedication to excellence continue to inspire inventors worldwide, making him a true pioneer in shaping the future of technology.

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]
Loading…