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For the Inventor, By the Inventor

Takasaki, Japan

Yuji Yoshii

This inventor holds 12 USPTO granted patents. Top assignee: Sanden Corporation. Active years: 1984-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yuji Yoshii. Retrieved from https://idiyas.com/inventor/yuji-yoshii

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 1.8

ph-index = 8

Forward Citations = 186(Granted Patents)


Location History:

  • Shimonojo, JP (1984)
  • Isesaki, JP (1993)
  • Takasaki, JP (1984 - 2000)

Company Filing History:

goldMedal12 out of 1,041 
 
Sanden Corporation
 patents

Years Active: 1984-2000

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12 patents (USPTO):Explore Patents
1. 6116876 - Scroll type compressor having an abrasion-resistant means between a (2000-09-12),
2. 5747905 - Hermetic motor driven fluid apparatus having improved insulating (1998-05-05),
3. 5443374 - Motor driven fluid compressor (1995-08-22),
4. 5435706 - Orbiting member fluid displacement apparatus with rotation preventing (1995-07-25),
5. 5330335 - Horizontally oriented rotary machine having internal lubication oil pump (1994-07-19),
6. 5312234 - Scroll compressor formed of three sub-assemblies (1994-05-17),
7. 5253489 - Scroll type compressor with injection mechanism (1993-10-19),
8. 5247738 - Method for assembling motor driven fluid compressor (1993-09-28),
9. 4548555 - Scroll type fluid displacement apparatus with nonuniform scroll height (1985-10-22),
10. 4514150 - Scroll type compressor with displacement adjusting mechanism (1985-04-30),
11. 4477239 - Scroll type fluid displacement apparatus with offset wraps for reduced (1984-10-16),
12. 4468178 - Scroll type compressor with displacement adjusting mechanism (1984-08-28),

Title: The Innovative Contributions of Yuji Yoshii

Introduction

Yuji Yoshii is a prominent inventor based in Takasaki, Japan, known for his significant contributions to the field of engineering and technology. With a total of 12 patents to his name, Yoshii has made remarkable advancements, particularly in compressor technology and motor-driven fluid apparatuses.

Latest Patents

One of Yoshii's latest patents is a scroll type compressor that features an abrasion-resistant means between a fixed scroll and a movable scroll. This innovative design allows the movable scroll to be driven by a crank pin that is eccentrically attached to a shaft, which is rotated by an external driving source. The invention includes a surface treatment for abrasion resistance applied to at least one of the end surfaces of the crank pin and the confronting end plate of the movable scroll. Additionally, an abrasion-resistant plate may be interposed between these components to enhance durability. Another notable patent is for a hermetic motor-driven fluid apparatus that boasts an improved electrical insulation structure. This apparatus includes a drive mechanism with a drive shaft connected to the compression mechanism and a motor for rotation. The design features a rotor surrounding the drive shaft and a stator assembly with a small radial air gap, ensuring efficient operation and enhanced insulation.

Career Highlights

Yuji Yoshii has built a successful career at Sanden Corporation, where he has been instrumental in developing innovative technologies. His work has not only contributed to the company's growth but has also advanced the industry standards for compressor and motor technologies.

Collaborations

Throughout his career, Yoshii has collaborated with notable colleagues, including Masaharu Hiraga and Norio Kitano. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Yuji Yoshii's contributions to engineering and technology through his patents and collaborations highlight his role as a leading inventor in his field. His innovative designs continue to influence the industry and pave the way for future advancements.

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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