Hirofumi Yamashita

This inventor holds 59 USPTO granted patents and 4 published patent applications, plus 1 CIPO patent and 1 EPO patent, primarily in Solid-State Imaging (CPC class H01L). Top assignees: Kabushiki Kaisha Toshiba, Hitachi, Ltd., Hitachi Computer Engineering Co., Ltd.. Active years: 1994-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Yamashita. Retrieved from https://idiyas.com/inventor/hirofumi-yamashita

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

USPTO Granted Patents = 59 (Patent Applications = 4)

% Patents Active = 64.4

CIPO Patents = 1

EPO Patents = 1 (Patent Applications = 2)

Average Co-Inventor Count = 2.4

ph-index = 20

Forward Citations = 1,355(Granted Patents)

Forward Citations (Not Self Cited) = 1,334(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Kokubunji, JP (1997)
Cambrige, MA (US) (2002)
Cambridge, MA (US) (2000 - 2007)
Ota-ku, JP (2008)
Yokohama, JP (1996 - 2009)
Kanagawa-ken, JP (2007 - 2009)
Fujisawa, JP (2011)
Tokyo, JP (2000 - 2014)
Kawasaki, JP (1994 - 2018)

Company Filing History:

49 out of 53,276

Kabushiki Kaisha Toshiba

Hitachi Computer Engineering Co., Ltd.

5. 2 out of 834,570

Other

patents

where one patent can have more than one assignee

Years Active: 1994-2018

Loading Chart...

Areas of Expertise:

Solid-State Imaging Device

Photoelectric Conversion

Signal Processing

Image Pickup Apparatus

MOS-Type Imaging

Substrate Design

Signal Storage

High Sensitivity

59 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9876041 - Solid-state imaging device and method of manufacturing the same (2018-01-23),

2. 9312298 - Solid-state imaging device with a signal storing portion including first and second semiconductor regions (2016-04-12),

3. 9300886 - Solid-state imaging device with switch elements provided between vertical signal lines and interconnects (2016-03-29),

4. 9276024 - Solid-state imaging device and method of manufacturing the same (2016-03-01),

5. 9093352 - Solid-state imaging device and method of controlling the same (2015-07-28),

6. 8916917 - Solid-state imaging device (2014-12-23),

7. 8890989 - Solid-state imaging device and method of manufacturing the same (2014-11-18),

8. 8841707 - Solid-state imaging device and method of controlling the same (2014-09-23),

9. 8823847 - Solid-state imaging device and manufacturing method thereof (2014-09-02),

10. 8820654 - Method of forming throttle passage and pipe with throttle passage (2014-09-02),

11. 8542304 - Solid-state imaging device (2013-09-24),

12. 8476573 - Photoelectric conversion film-stacked type solid-state imaging device and method of manufacturing the same (2013-07-02),

13. 8435823 - Solid-state imaging device and method of manufacturing the same (2013-05-07),

14. 8416327 - Solid-state image pickup apparatus (2013-04-09),

15. 8390707 - Solid-state imaging device and manufacturing method thereof (2013-03-05),

Title: The Innovative Journey of Hirofumi Yamashita

Introduction:

Hirofumi Yamashita, a pioneering inventor hailing from Kawasaki, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking inventions and patents.

Latest Patents:

Yamashita's latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his versatility and forward-thinking approach to invention.

Career Highlights:

With a career spanning over two decades, Hirofumi Yamashita has established himself as a leading figure in the field of engineering and technology. His innovative spirit has led to the development of cutting-edge products that have revolutionized various industries.

Collaborations:

Throughout his career, Yamashita has collaborated with top research institutions, universities, and leading tech companies to bring his inventions to life. His ability to work in multidisciplinary teams has resulted in the successful implementation of groundbreaking technologies.

Conclusion:

In conclusion, Hirofumi Yamashita's relentless pursuit of innovation and his passion for creating solutions to complex challenges have solidified his position as a visionary inventor. His impact on the world of technology is profound, and his legacy will continue to inspire future generations of inventors.

Profile summary based on public USPTO records.