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For the Inventor, By the Inventor

Fujiidera, Japan

Toshinobu Katafuchi

This inventor holds 7 USPTO granted patents. Top assignee: Mita Industrial Co., Ltd.. Active years: 1987-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshinobu Katafuchi. Retrieved from https://idiyas.com/inventor/toshinobu-katafuchi

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 5

Forward Citations = 40(Granted Patents)


Location History:

  • Hyogo, JP (1987 - 1990)
  • Fujiidera, JP (1992 - 1993)
  • Osaka, JP (1996)

Company Filing History:

goldMedal7 out of 1,344 
 
Mita Industrial Co., Ltd.
 patents

Years Active: 1987-1996

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7 patents (USPTO):Explore Patents
1. 5485251 - Cleaning device for an electrostatic charger (1996-01-16),
2. 5254915 - Motor control device including an improved braking control arrangement (1993-10-19),
3. 5220387 - Transfer unit of an image forming apparatus (1993-06-15),
4. 5195740 - Nipping device of a transfer unit (1993-03-23),
5. 5142325 - Image forming apparatus (1992-08-25),
6. 4966355 - Copying paper feeding device for an alignment tray of a copy machine (1990-10-30),
7. 4659206 - Photoconductive drum device for electrostatic copying machines or the (1987-04-21),

Title: Innovations of Toshinobu Katafuchi

Introduction

Toshinobu Katafuchi is a notable inventor based in Fujiidera, Japan. He has made significant contributions to the field of electrostatic charging and motor control devices. With a total of 7 patents to his name, Katafuchi continues to innovate and improve technologies used in various applications, particularly in copying machines.

Latest Patents

One of his latest patents is a cleaning device for an electrostatic charger. This device is designed for a SCOROTRON type electrostatic charger used in image forming apparatuses, such as copying machines. It features a first cleaning member that contacts the discharge wire and a second cleaning member that contacts the grid wire. These cleaning members are alternately brought into contact with their respective wires during the forward and return strokes, ensuring effective cleaning.

Another significant patent is a motor control device that includes an improved braking control arrangement. This device is utilized for controlling a DC motor responsible for secondary paper feeding in copying machines. The motor is initially rotated at high speed and then decelerated to a process speed after a set time. The control device applies a short-circuiting brake during deceleration, allowing for reliable speed reduction without variation in braking. The braking is released precisely when the motor reaches the desired process speed, ensuring smooth operation.

Career Highlights

Katafuchi works at Mita Industrial Co., Ltd., where he has been able to apply his innovative ideas and technical expertise. His work has significantly impacted the efficiency and functionality of devices used in the copying industry.

Collaborations

He collaborates with talented coworkers, including Syuji Yamada and Arihiro Tsunoda, who contribute to the development of advanced technologies alongside him.

Conclusion

Toshinobu Katafuchi's contributions to the field of electrostatic charging and motor control devices highlight his innovative spirit and dedication to improving technology. His patents reflect a commitment to enhancing the efficiency of copying machines, making him a valuable figure in the industry.

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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