logo

For the Inventor, By the Inventor

Chiba, Japan

Kazuo Hiraoka

This inventor holds 11 USPTO granted patents and 1 EPO patent. Top assignee: Sumitomo Heavy Industries, Ltd.. Active years: 1994-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Hiraoka. Retrieved from https://idiyas.com/inventor/kazuo-hiraoka

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

USPTO Granted Patents = 11

% Patents Active = 100.0


Average Co-Inventor Count = 1.2

ph-index = 7

Forward Citations = 102(Granted Patents)


Location History:

  • Chiba-ken, JP (1996)
  • Chiba, JP (1994 - 2003)

Company Filing History:

goldMedal11 out of 1,251 
 
Sumitomo Heavy Industries, Ltd.
 patents

Years Active: 1994-2003

Loading Chart...
Loading Chart...
11 patents (USPTO):Explore Patents
1. 6514442 - Method and apparatus for adjusting zero point of a pressure sensor of an injection apparatus (2003-02-04),
2. 6340439 - Depressurization method in plasticization and metering process for a motor-driven injection molding machine (2002-01-22),
3. 6284170 - Method for controlling drive of screw in injection molding machine (2001-09-04),
4. 5912025 - Control device for motor-driven injection molding machine capable of (1999-06-15),
5. 5869108 - Control system for controlling a motor-driven injection molding machine (1999-02-09),
6. 5844391 - Device for controlling the clamping force of a motor-driven injection (1998-12-01),
7. 5552690 - Control unit capable of improving a response characteristic and a (1996-09-03),
8. 5540577 - Injection molding machine capable of reducing the work required to an (1996-07-30),
9. 5380181 - Control device for an electric injection molding machine (1995-01-10),
10. 5371450 - Control unit capable of smoothly carrying out a switching operation (1994-12-06),
11. 5336073 - Injection pressure limiting device for injection molding machine (1994-08-09),

Title: Kazuo Hiraoka: Innovator in Injection Molding Technology

Introduction

Kazuo Hiraoka, based in Chiba, Japan, is a notable inventor recognized for his contributions to the field of injection molding technology. With a remarkable portfolio of 11 patents, Hiraoka continues to advance the capabilities of modern manufacturing through innovation.

Latest Patents

Hiraoka's latest patents include a sophisticated "Method and apparatus for adjusting zero point of a pressure sensor of an injection apparatus." This innovative method enables precise zero-point adjustment for pressure sensors, ensuring accurate pressure detection as a screw is moved. By minimizing frictional resistance during the adjustment process, the technology enhances the reliability of detection values.

Another significant patent is the "Depressurization method in plasticization and metering process for a motor-driven injection molding machine." This innovation improves the operation of injection devices, specifically the heating cylinder, which melts resin powder into molten resin. The method incorporates a servomotor-based control system that allows for accurate positioning and rotation of the screw, thus ensuring efficient depressurization of the molten resin during manufacturing processes.

Career Highlights

Kazuo Hiraoka is affiliated with Sumitomo Heavy Industries, Ltd., a company recognized for its advanced engineering solutions. His work has focused on enhancing injection molding machines, making them more precise and efficient for industrial applications.

Collaborations

Throughout his career, Hiraoka has collaborated with fellow engineers and inventors, including Yoshiyuki Imatomi and Atsushi Ishikawa. These partnerships have facilitated the development of innovative technologies in the injection molding sector, highlighting the importance of teamwork in the pursuit of engineering excellence.

Conclusion

Kazuo Hiraoka stands out as a prominent inventor whose advancements in injection molding technology significantly impact manufacturing processes. His commitment to innovation, evidenced by his numerous patents and collaborative efforts, exemplifies the vital role that dedicated inventors play in the evolution of industrial technology.

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]
Loading…