Yokohama, Japan

Masashi Hiroki

USPTO Granted Patents = 60 

Average Co-Inventor Count = 2.7

ph-index = 9

Forward Citations = 300(Granted Patents)

Forward Citations (Not Self Cited) = 281(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1989 - 1990)
  • Yokohama, JP (1998 - 2012)
  • Kanagawa-ken, JP (2003 - 2013)
  • Kanagawa, JP (1995 - 2015)

Company Filing History:


Years Active: 1989-2015

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Areas of Expertise:
Inkjet Head
Image Forming Apparatus
Ink Composition
Liquid Ink
Pigment Dispersion
Non-Aqueous Ink
Aqueous Ink
Fixing Device
Recording Apparatus
Toner Discharge Control
Development Rollers
Washing Solution
60 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Masashi Hiroki

Introduction

Masashi Hiroki, an esteemed inventor based in Yokohama, Japan, has made significant strides in the field of engineering and technology, amassing an impressive portfolio of 60 patents. His innovative work primarily revolves around imaging technologies and inkjet printing systems, which have laid the groundwork for advancements in these sectors.

Latest Patents

Hiroki's recent inventions reflect his commitment to enhancing the performance and efficiency of printing technologies. One of his notable patents describes a **fixing device and image forming apparatus**. This device features a fixing section equipped with a fixing belt, supported by multiple rollers, which works to nip and carry a recording medium at controlled speeds to optimize the fixing process. Another significant patent is for an **inkjet head and an inkjet recording device**. This invention incorporates a pressure chamber to manage ink, an actuator to modify chamber volume, and a nozzle that strategically discharges ink to achieve precise pixel formation, adjusting the discharge cycles based on timing and requirements.

Career Highlights

Masashi Hiroki has garnered experience at prominent companies in the technology sector, including Toshiba Tec Corporation and Toshiba Corporation. His roles within these organizations have allowed him to explore and develop groundbreaking technologies in imaging and printing, significantly impacting product design and functionality.

Collaborations

Throughout his career, Hiroki has collaborated with talented professionals, including Satoshi Kaiho and Kazuhiko Ohtsu. These collaborations have fostered an environment of creativity and innovation, enabling the development of solutions that address complex challenges in the technology landscape.

Conclusion

Masashi Hiroki’s contributions to technology and innovation are remarkable, marked by a substantial number of patents and collaborations with industry professionals. His latest inventions continue to influence the fields of image forming and inkjet technology, ensuring his position as a significant figure in the realm of inventors and innovators.

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