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For the Inventor, By the Inventor

Shiga, Japan

Tamotsu Yamashita

This inventor holds 12 USPTO granted patents and 1 EPO patent. Top assignees: Suiken Co., Ltd., Suiken Technology Co., Ltd.. Active years: 1995-2013.

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

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

Calculating rank
USPTO Granted Patents = 12

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.1

ph-index = 8

Forward Citations = 126(Granted Patents)


Location History:

  • Osaka, JP (1995 - 2001)
  • Takatsuki, JP (2001 - 2003)
  • Gamo-Gun, JP (2003)
  • Shiga, JP (2003 - 2013)

Company Filing History:

goldMedal8 out of 20 
 
Suiken Co., Ltd.
 patents
silverMedal4 out of 4 
 
Suiken Technology Co., Ltd.
 patents

Years Active: 1995-2013

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12 patents (USPTO):Explore Patents
1. 8402992 - Branching unit for boring without stopping passage of fluid (2013-03-26),
2. 8156959 - Branching unit for boring without stopping passage of fluid (2012-04-17),
3. 8118331 - Non-bolt joint structure and method for producing non-bolt joint structure (2012-02-21),
4. 6622747 - Cutting, valve insertion and corrosion-resistant works without fluid supply interruption (2003-09-23),
5. 6615859 - Fluid supply interruption free method of construction (2003-09-09),
6. 6530389 - Existing pipe cut-off method, existing pipe slitting method, piping structure, and valve insertion method for inserting a valve in a line without stopping passage of water or fluid (2003-03-11),
7. 6470907 - Existing pipe cut-off method, existing pipe slitting method, piping structure, and valve insertion method for inserting a valve in a line without stopping passage of water or fluid (2002-10-29),
8. 6357471 - Valve insertion method and cutting tool (2002-03-19),
9. 6308726 - Valve insertion method and cutting tool (2001-10-30),
10. 6283446 - Gate valve system (2001-09-04),
11. D398504 - Apparatus for advancing axially aligned pipes telescopically into or out (1998-09-22),
12. 5431453 - Pipe coupling arrangement (1995-07-11),

Title: The Innovative Contributions of Tamotsu Yamashita

Introduction

Tamotsu Yamashita is a notable inventor based in Shiga, Japan. He has made significant contributions to the field of engineering, particularly in the development of innovative solutions for boring and fluid passage systems. With a total of 12 patents to his name, Yamashita's work has had a considerable impact on various industries.

Latest Patents

Yamashita's latest patents include a "Branching unit for boring without stopping passage of fluid." This invention is designed to create an opening in a pipe wall by boring a section of the existing pipe using a drill machine equipped with a hole saw. The unit features a sealing case with multiple separate casings and a branch pipe portion that extends radially. Additionally, the invention includes a valve body that rotates to open and close a branch hole, along with a rotation mechanism for the valve body. Another patent focuses on a gear case part that allows for the assembly and extraction of a drive gear device through an upper aperture, enhancing the efficiency of maintenance and operation.

Career Highlights

Throughout his career, Tamotsu Yamashita has worked with several companies, including Suiken Co., Ltd. and Suiken Technology Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Yamashita has collaborated with notable colleagues such as Toshiyuki Sato and Hideshige Homma. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Tamotsu Yamashita's contributions to the field of engineering through his patents and collaborations highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and inspire future inventors.

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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