Hiroki Yamashita

This inventor holds 18 USPTO granted patents, primarily in Image Forming Technology. Top assignees: Minolta Camera Kabushiki Kaisha, Minolta Company, Ltd., Minolta Camera Kaisha. Active years: 1990-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroki Yamashita. Retrieved from https://idiyas.com/inventor/hiroki-yamashita-3mxc4fde

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

Calculating rank

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 7

Forward Citations = 135(Granted Patents)

Location History:

Osaka, JP (1990 - 1992)
Okazaki, JP (1992 - 2001)

Company Filing History:

11 out of 2,979

Minolta Camera Kabushiki Kaisha

patents

6 out of 2,816

Minolta Company, Ltd.

patents

1 out of 1

Minolta Camera Kaisha

patent

Years Active: 1990-2001

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Areas of Expertise:

Belt Drive Device

Image Forming Apparatus

Copying Machine

Sheet Storing Apparatus

Finisher Function

Document Processing

Sheet Handling

Paper Stapling

Copying System

Sheet Sorter

Two-in-One Mode

Hole Punching Assembly

18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6192210 - Belt drive device and image forming apparatus equipped with said device (2001-02-20),

2. 5852765 - Image forming system and finisher (1998-12-22),

3. 5822672 - Copying machine (1998-10-13),

4. 5599008 - Finisher with a punching function and a stapling function, and sheet (1997-02-04),

5. 5587782 - Copying machine for copying documents in two-in-one mode (1996-12-24),

6. 5509645 - Sheet sorter with hole punching assembly (1996-04-23),

7. 5241355 - Image forming apparatus for processing sheets of image-bearing copy paper (1993-08-31),

8. 5151735 - Sheet storing apparatus with a plurality of trays (1992-09-29),

9. 5139254 - Sheet storing apparatus (1992-08-18),

10. 5083761 - Sheet storing apparatus for sheets ejected from a copying machine (1992-01-28),

11. 5053831 - Image forming apparatus having a finisher (1991-10-01),

12. 5028965 - Copying system having a sheet refeed device (1991-07-02),

13. 5012297 - Sheet storing apparatus provided for a copying machine (1991-04-30),

14. 4993697 - Copy sheet stack apparatus (1991-02-19),

15. 4981293 - Sheet storing apparatus provided for a copying machine (1991-01-01),

Title: Innovations of Hiroki Yamashita

Introduction

Hiroki Yamashita is a prominent inventor based in Okazaki, Japan. He has made significant contributions to the field of image forming technology, holding a total of 18 patents. His innovative designs have improved the efficiency and functionality of various devices used in imaging systems.

Latest Patents

One of his latest patents is the "Belt drive device and image forming apparatus equipped with said device." This invention features a belt drive that minimizes the transverse movement of the belt across the length of a roller, preventing the belt from riding up onto the roller. The device includes elastic guide members mounted on the edges or back surface of the belt, ensuring smooth operation over multiple rollers. Another notable patent is the "Image forming system and finisher," which includes a finisher unit that processes sheets discharged from a copying machine. This system incorporates a fold/punch mechanism with folding rollers and a punching rod, allowing for efficient handling of sheets.

Career Highlights

Hiroki Yamashita has worked with notable companies such as Minolta Camera Kabushiki Kaisha and Minolta Company, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in imaging technology.

Collaborations

Throughout his career, Yamashita has collaborated with talented individuals, including Keichi Kinoshita and Toshio Matsui. These partnerships have contributed to the advancement of his inventions and the overall progress in the field.

Conclusion

Hiroki Yamashita's contributions to imaging technology through his patents and collaborations highlight his role as a significant inventor in the industry. His innovative solutions continue to influence the development of image forming apparatuses.

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]