Keiichiro Oishi

This inventor holds 51 USPTO granted patents and 13 published patent applications, plus 14 CIPO patents and 20 EPO patents, primarily in Copper Alloy Technology (CPC class C22C). Top assignees: Mitsubishi Shindoh Co., Ltd., Mitsubishi Materials Corporation, National Institute for Materials Science. Active years: 1995-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiichiro Oishi. Retrieved from https://idiyas.com/inventor/keiichiro-oishi

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

USPTO Granted Patents = 51 (Patent Applications = 13)

% Patents Active = 94.1

CIPO Patents = 14 (Patent Applications = 3)

EPO Patents = 20 (Patent Applications = 3)

Average Co-Inventor Count = 1.7

ph-index = 6

Forward Citations = 91(Granted Patents)

Forward Citations (Not Self Cited) = 47(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Yao, JP (2011 - 2018)
Osaka, JP (1995 - 2022)
Sakai, JP (2002 - 2023)
Tokyo, JP (2015 - 2024)

Company Filing History:

35 out of 71

Mitsubishi Shindoh Co., Ltd.

patents

21 out of 1,555

Mitsubishi Materials Corporation

patents

2 out of 575

National Institute for Materials Science

patents

4. 2 out of 3

Sambo Copper Alloy Co., Ltd.

patents

5. 1 out of 1

Sanbo Shindo Kogyo Co., Ltd.

where one patent can have more than one assignee

Years Active: 1995-2024

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Areas of Expertise:

Copper Alloy

Free-Cutting Alloy

Surface Treatment

High-Strength Alloy

Machinability

Electrical Conductivity

Casting Method

Brazed Structure

Heat Resistance

Copper Sheet

Copper Rod

Copper Wire

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12071693 - Surface treatment method for copper or copper alloy, surface treatment liquid for sterilizing copper or copper alloy, and sterilization method using copper or copper alloy treated by said method (2024-08-27),

2. 11814712 - Free-cutting copper alloy and method for producing free-cutting copper alloy (2023-11-14),

3. 11788173 - Free-cutting copper alloy, and manufacturing method of free-cutting copper alloy (2023-10-17),

4. 11535939 - Surface treatment method for copper or copper alloy, surface treatment liquid for sterilizing copper or copper alloy, and sterilization method using copper or copper alloy treated by said method (2022-12-27),

5. 11512370 - Free-cutting copper alloy and method for producing free-cutting copper alloy (2022-11-29),

6. 11479834 - Free-cutting copper alloy and method for manufacturing free-cutting copper alloy (2022-10-25),

7. 11434548 - Free-cutting copper alloy and method for producing free-cutting copper alloy (2022-09-06),

8. 11421302 - Free-cutting copper alloy and method for producing free-cutting copper alloy (2022-08-23),

9. 11421301 - Free-cutting copper alloy casting and method for producing free-cutting copper alloy casting (2022-08-23),

10. 11313013 - Free-cutting copper alloy and method for producing free-cutting copper alloy (2022-04-26),

11. 11155909 - High-strength free-cutting copper alloy and method for producing high-strength free-cutting copper alloy (2021-10-26),

12. 11136648 - Free-cutting copper alloy, and method for producing free-cutting copper alloy (2021-10-05),

13. 11131009 - High-strength free-cutting copper alloy and method for producing high-strength free-cutting copper alloy (2021-09-28),

14. 10570483 - Copper-based alloy casting in which grains are refined (2020-02-25),

15. 10557185 - Free-cutting copper alloy, and method for producing free-cutting copper alloy (2020-02-11),

Title: Keiichiro Oishi: Pioneering Inventor from Osaka

Introduction: Keiichiro Oishi is a renowned inventor hailing from Osaka, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Keiichiro Oishi holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Keiichiro Oishi has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

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

Conclusion: Keiichiro Oishi's passion for innovation and his relentless drive to create a better future through technology make him a true pioneer in the world of inventions.

Profile summary based on public USPTO records.