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For the Inventor, By the Inventor

Miyagi, Japan

Tetsuo Machida

This inventor holds 8 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1976-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuo Machida. Retrieved from https://idiyas.com/inventor/tetsuo-machida-vewpg71v

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 7

Forward Citations = 167(Granted Patents)


Location History:

  • Tagahya, JA (1976)
  • Tagajyo, JA (1977)
  • Tagajyo, JP (1978)
  • Miyagi, JP (1987 - 1995)

Company Filing History:

goldMedal8 out of 58,145 
 
Sony Corporation
 patents

Years Active: 1976-1995

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8 patents (USPTO):Explore Patents
1. 5385461 - Injection molding machine for making a magnetic tape cassette (1995-01-31),
2. 5372770 - Injection molding method, injection molding machine, injection molding (1994-12-13),
3. 5340528 - Injection/compression molding method, a die for injection/compression (1994-08-23),
4. 5161081 - Disk cartridge made by injecting molten synthetic resin into a mold so (1992-11-03),
5. 4706149 - Tape cassette (1987-11-10),
6. 4131243 - Tape cassette (1978-12-26),
7. 4062506 - Tape cassette with features for preventing the tape from moving up or (1977-12-13),
8. 3991956 - Tape cassette (1976-11-16),

Title: Tetsuo Machida: Innovator in Injection Molding Technology

Introduction

Tetsuo Machida is a prominent inventor based in Miyagi, Japan. He has made significant contributions to the field of injection molding technology, holding a total of 8 patents. His innovative approaches have led to advancements in manufacturing processes, particularly in the production of magnetic tape cassettes.

Latest Patents

One of Tetsuo Machida's latest patents is an injection molding machine designed for making magnetic tape cassettes. This invention provides an injection molding die unit with a simple construction and an efficient injection molding method. The process allows for the molding of a composite molding in a short cycle time. After the initial molding is completed, the male die is moved along with the first molding, while a movable female die is adjusted to create a space for injecting a second molding material. This innovative method enhances the efficiency and effectiveness of the injection molding process.

Career Highlights

Tetsuo Machida has had a successful career at Sony Corporation, where he has applied his expertise in injection molding technology. His work has not only contributed to the company's product development but has also positioned him as a key figure in the industry. His patents reflect his commitment to improving manufacturing techniques and his ability to innovate within the field.

Collaborations

Throughout his career, Tetsuo Machida has collaborated with notable colleagues, including Nobuyuki Sasaki and Hiroshi Kondo. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies in injection molding.

Conclusion

Tetsuo Machida's contributions to injection molding technology have made a lasting impact on the industry. His innovative patents and collaborative efforts at Sony Corporation highlight his role as a leading inventor in this field. His work continues to influence manufacturing processes and inspire future innovations.

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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