Takazo Sotojima

This inventor holds 10 USPTO granted patents and 2 published patent applications. Top assignees: Daikin Industries, Ltd., Toho Kasei Ltd.. Active years: 2002-2025.

USPTO Granted Patents = 10 (Patent Applications = 2)

% Patents Active = 30.0

Average Co-Inventor Count = 4.4

ph-index = 4

Forward Citations = 106(Granted Patents)

Location History:

Osaka, JP (2002 - 2010)
Sakai, JP (2010 - 2013)

Company Filing History:

10 out of 4,487

Daikin Industries, Ltd.

where one patent can have more than one assignee

Years Active: 2002-2025

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12421967 - Rotary compressor and refrigeration device (2025-09-23),

2. 8366424 - Rotary fluid machine with reverse moment generating mechanism (2013-02-05),

3. 8172560 - Fluid machinery having annular back pressure space communicating with oil passage (2012-05-08),

4. 7891961 - Mounting structure of discharge valve in scroll compressor (2011-02-22),

5. 7806672 - Rotary compressor with pressing mechanism and adjusting mechanism to vary a magnitude of a load in response to a pressure difference between the suction fluid and discharge fluid (2010-10-05),

6. 7802972 - Rotary type compressor (2010-09-28),

7. 7753663 - Mounting structure of discharge valve in rotary compressor (2010-07-13),

8. 7722340 - Rotary type fluid machine (2010-05-25),

9. 6904702 - Method and apparatus for drying substrate (2005-06-14),

10. 6460347 - Stirling refrigerating machine (2002-10-08),

Title: Innovations of Takazo Sotojima

Introduction

Takazo Sotojima is a prominent inventor based in Sakai, Japan. He has made significant contributions to the field of rotary machinery, holding a total of 10 patents. His work focuses on enhancing the efficiency and functionality of rotary compressors and fluid machines.

Latest Patents

Among his latest patents, Sotojima has developed a rotary compressor and refrigeration device. This invention features a cylinder end plate with a discharge port that communicates with a discharge-side space. The design allows part of the discharge port's opening to overlap with the inside of the cylinder chamber, with the opening end face inclined radially outward. Another notable patent is for a rotary fluid machine with a reverse moment generating mechanism. This machinery includes a fixed member, a drive shaft, and a movable member that changes the volume of a fluid chamber as it revolves. The reverse moment generating mechanism is designed to create a moment in the reverse direction, enhancing the machine's operational efficiency.

Career Highlights

Sotojima has worked with notable companies such as Daikin Industries, Ltd. and Toho Kasei Ltd. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the field of rotary machinery.

Collaborations

Throughout his career, Sotojima has collaborated with talented individuals, including Takashi Shimizu and Yoshitaka Shibamoto. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Takazo Sotojima's contributions to rotary machinery 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.