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For the Inventor, By the Inventor

Chiba, Japan

Yasuyoshi Sakamoto

This inventor holds 10 USPTO granted patents. Top assignees: Seikoh Giken Co., Ltd., Sumitomo Heavy Industries, Ltd., Other. Active years: 1995-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuyoshi Sakamoto. Retrieved from https://idiyas.com/inventor/yasuyoshi-sakamoto

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

USPTO Granted Patents = 10

% Patents Active = 80.0

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 38(Granted Patents)


Location History:

  • Narita, JP (1995)
  • Chiba, JP (1997 - 2003)
  • Kamagaya, JP (1998 - 2006)
  • Matsudo, JP (2007)

Company Filing History:

goldMedal9 out of 156 
 
Seikoh Giken Co., Ltd.
 patents
silverMedal3 out of 1,251 
 
Sumitomo Heavy Industries, Ltd.
 patents
bronzeMedal1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1995-2007

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10 patents (USPTO):Explore Patents
1. 7270535 - Disc-molding mold, molded product, molding machine and disk-shaped member (2007-09-18),
2. D528572 - Moving side bush for a disc-molding die (2006-09-19),
3. D526667 - Sprue cutting punch for a disc-molding die (2006-08-15),
4. D521033 - Inner stamper holder for a disc-molding die (2006-05-16),
5. D521032 - Sprue bush for a disc-molding die (2006-05-16),
6. D520034 - Cavity ring for a disc-molding die (2006-05-02),
7. 6558152 - Disc-molding mold (2003-05-06),
8. 5773040 - Disc molding die (1998-06-30),
9. 5693348 - Disc molding die (1997-12-02),
10. 5388982 - Injection molding die mounted on an injection molding machine for (1995-02-14),

Title: Yasuyoshi Sakamoto: Innovator in Disc-Molding Technology

Introduction

Yasuyoshi Sakamoto is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of molding technology, holding a total of 10 patents. His innovative work focuses on improving the quality of molded products through advanced disc-molding techniques.

Latest Patents

Among his latest patents are the disc-molding mold, molded product, molding machine, and disk-shaped member. The primary objective of these inventions is to enhance the degree of transfer of a pattern from a stamper, thereby improving the quality of molded products. Sakamoto's design includes a unique cooling capacity configuration in the medium flow passage of the stamper-side disc-shaped member, which is lower than that of the non-stamper-side member. This innovative approach reduces the quantity of heat radiated from the outer peripheral edge of the stamper-side disc-shaped member, preventing over-cooling and local deterioration in the degree of transfer. Consequently, the fine pattern's transfer quality is improved across the entire cavity space, leading to superior molded products.

Career Highlights

Sakamoto has worked with notable companies such as Seikoh Giken Co., Ltd. and Sumitomo Heavy Industries, Ltd. His experience in these organizations has contributed to his expertise in molding technology and innovation.

Collaborations

Throughout his career, Yasuyoshi Sakamoto has collaborated with talented individuals, including Katsuyuki Hiki and Akira Hatano. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the molding industry.

Conclusion

Yasuyoshi Sakamoto's contributions to disc-molding technology have significantly impacted the quality of molded products. His innovative patents and collaborations with industry professionals highlight his dedication to advancing this field.

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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