Ken Yoshioka

This inventor holds 70 USPTO granted patents and 3 published patent applications, primarily in Plasma Processing (CPC class H01L). Top assignees: Hitachi, Ltd., Hitachi-High-Technologies Corporation, Hitachi Engineering Co., Ltd.. Active years: 1994-2016.

USPTO Granted Patents = 70 (Patent Applications = 3)

% Patents Active = 65.7

Average Co-Inventor Count = 4.7

ph-index = 14

Forward Citations = 996(Granted Patents)

Forward Citations (Not Self Cited) = 968(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Hitachiohta, JP (1994)
Hitachioota, JP (1995)
Hitachiota, JP (1994 - 1996)
Kudamatsu, JP (1999 - 2001)
Hamamatsu, JP (2002)
Hikari, JP (1999 - 2016)

Company Filing History:

Hitachi-High-Technologies Corporation

patents

1 out of 162

Hitachi Engineering Co., Ltd.

patents

4. 2 out of 834,350

Other

patents

where one patent can have more than one assignee

Years Active: 1994-2016

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Areas of Expertise:

Plasma Processing

Semiconductor Manufacturing

Etching Methods

Vacuum Processing

Wafer Processing

Surface Processing

Processing Apparatus

High-Speed Circuits

Manufacturing Method

Specimen Processing

Yield Improvement

70 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9378929 - Plasma processing apparatus and plasma processing method (2016-06-28),

2. 9039865 - Plasma processing apparatus (2015-05-26),

3. 8951385 - Plasma processing apparatus and plasma processing method (2015-02-10),

4. 8940128 - Plasma processing apparatus (2015-01-27),

5. 8795467 - Plasma processing apparatus and method (2014-08-05),

6. 8282848 - Plasma processing method and plasma processing apparatus (2012-10-09),

7. 8231759 - Plasma processing apparatus (2012-07-31),

8. 8092637 - Manufacturing method in plasma processing apparatus (2012-01-10),

9. 8083889 - Apparatus and method for plasma etching (2011-12-27),

10. 8062473 - Plasma processing apparatus and method (2011-11-22),

11. 7833429 - Plasma processing method (2010-11-16),

12. 7744721 - Plasma processing apparatus (2010-06-29),

13. 7740739 - Plasma processing apparatus and method (2010-06-22),

14. 7713756 - Apparatus and method for plasma etching (2010-05-11),

15. 7608162 - Plasma processing apparatus and method (2009-10-27),

Title: Ken Yoshioka - Innovator from Hikari, Japan

Introduction: Ken Yoshioka is a renowned inventor hailing from Hikari, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Ken Yoshioka holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his diverse range of expertise and innovative spirit.

Career Highlights: With a career spanning over two decades, Ken Yoshioka has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in various industries.

Collaborations: Throughout his career, Ken Yoshioka has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing.

Conclusion: Ken Yoshioka's passion for innovation and his relentless pursuit of excellence continue to inspire the next generation of inventors and entrepreneurs in Japan and beyond.