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For the Inventor, By the Inventor

Shizuoka, Japan

Heizaburo Kato

This inventor holds 91 USPTO granted patents and 12 EPO patents, primarily in Cam Mechanisms (CPC class 100282). Top assignees: Sankyo Manufacturing Co., Ltd., Sankyo Seisakusho Co., Eisai Company, Limited. Active years: 1981-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Heizaburo Kato. Retrieved from https://idiyas.com/inventor/heizaburo-kato

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

USPTO Granted Patents = 91

% Patents Active = 86.8

 

Average Co-Inventor Count = 1.1

ph-index = 11

Forward Citations = 502(Granted Patents)

Forward Citations (Not Self Cited) = 448(Dec 10, 2025)


Inventors with similar research interests:


    Location History:

    • Tokyo, JP (1981 - 1982)
    • Ichikawa, JP (1985 - 1987)
    • Shizuoka-ken, JP (1996 - 2009)
    • Ogasa-gun, JP (1999 - 2010)
    • Kikugawa, JP (2007 - 2012)
    • Shizuoka, JP (1986 - 2016)

    Company Filing History:

    goldMedal50 out of 61 
     
    Sankyo Manufacturing Co., Ltd.
     patents
    silverMedal30 out of 50 
     
    Sankyo Seisakusho Co.
     patents
    bronzeMedal2 out of 677 
     
    Eisai Company, Limited
     patents
    4. 2 out of 2 
     
    Kabushikikaisha Sankyo Seisakujo
     patents
    5. 2 out of 2 
     
    Sankyo Seisakusho Co. & Eisai Co., Ltd.
     patents
    6. 2 out of 9 
     
    Techno Dynamics Inc.
     patents
    7. 2 out of 143 
     
    Yamazaki Mazak Corporation
     patents
    8. 1 out of 2 
     
    Sanko Seisakusho Co.
     patents
    9. 1 out of 1 
     
    Sankyo Seisakusho & Eisai Co., Ltd.
     patent
    10. 1 out of 1 
     
    Sankyo Seisakusho Co. (Joint-Stock Company of Japan)
     patent
    11. 2 out of 834,453 
    Other
     patents
    where one patent can have more than one assignee

    Years Active: 1981-2025

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    Areas of Expertise:
    Cam Device
    Sheet Material Feeding
    Clamping Device
    Rotary Table
    Machining Unit
    Article Carrying
    Tool Magazine
    Power Transmission
    Transporting Apparatus
    Mechanical Pressing Machine
    Automatic Tool Exchange
    Torque Limiter
    91 patents (USPTO):Explore Patents
    1. 12409524 - Barrel cam device (2025-09-09),
    2. 9488257 - Cam device (2016-11-08),
    3. 8308036 - Sheet material feeding apparatus (2012-11-13),
    4. 7946580 - Sheet material feeding apparatus with guide members passing through roll grooves (2011-05-24),
    5. 7793567 - Clamping device and rotary table apparatus (2010-09-14),
    6. 7748302 - Workpiece exchanging apparatus and lathe unit (2010-07-06),
    7. 7717018 - Machining unit and machine tool (2010-05-18),
    8. 7649287 - Motor fastening mechanism and cam device (2010-01-19),
    9. 7603930 - Rotary table apparatus (2009-10-20),
    10. 7491022 - Inclining and rotating table apparatus (2009-02-17),
    11. 7451869 - Article carrying apparatus (2008-11-18),
    12. 7395743 - Lathe spindle unit and lathe apparatus (2008-07-08),
    13. 7383942 - Article carrying apparatus (2008-06-10),
    14. 7237449 - Drive mechanism and movable table unit provided with the same (2007-07-03),
    15. 7229380 - Power transmission device and plate-material feeding apparatus incorporating thereinto the same (2007-06-12),

    Title: Innovations and Contributions of Heizaburo Kato

    Introduction

    Heizaburo Kato, a distinguished inventor based in Shizuoka, Japan, has made significant contributions to the field of engineering through his innovative designs and technological advancements. With an impressive portfolio of 90 patents, Kato has established himself as a leading figure in the development of various mechanical devices and apparatuses.

    Latest Patents

    Among Kato's most recent inventions are two notable patents that showcase his ingenuity and expertise. The first is a cam device that features a first member with multiple cam followers arranged in a row and a second member incorporating a rotatable cam with an engaging groove. This innovative design allows for relative movement between the two members by rotating the cam, enabling smooth engagement of the cam followers with the groove. Additionally, the cam device includes a gear mechanism that facilitates this rotation, further enhancing its functionality.

    The second patent is related to a sheet material feeding apparatus, which includes a main roll and a sub-roll designed to intermittently feed sheet material to a press apparatus. This invention allows for precise adjustment of roll clearance based on sheet thickness, optimizing the feeding process. Furthermore, Kato's design includes a release device that momentarily releases the sheet material before pressing, ensuring efficiency and accuracy in the production process.

    Career Highlights

    Throughout his career, Heizaburo Kato has worked for reputable companies, including Sankyo Manufacturing Co., Ltd. and Sankyo Seisakusho Co. These positions provided him with the platform to develop and refine his inventions, contributing to advancements in manufacturing processes and equipment.

    Collaborations

    Kato's work has often been collaborative, involving talented individuals such as Yuki Tsushima and Takayuki Ohwaki. These collaborations have allowed for a fusion of ideas and skills, leading to the creation of innovative solutions and enhancements in various mechanical systems.

    Conclusion

    Heizaburo Kato continues to be a pivotal figure in the realm of engineering inventions, with his latest patents reflecting his dedication to innovation and improvement. His contributions have not only advanced technology but have also influenced the industries in which he has worked, marking him as an inventor of significant importance in contemporary engineering.

    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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