Kanagawa, Japan

Atsushi Nakatsuka

USPTO Granted Patents = 9 


Average Co-Inventor Count = 6.5

ph-index = 2

Forward Citations = 10(Granted Patents)


Location History:

  • Chigasaki, JP (2010 - 2012)
  • Kanagawa, JP (2012 - 2014)

Company Filing History:


Years Active: 2010-2014

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9 patents (USPTO):Explore Patents

Title: Celebrating the Innovations of Atsushi Nakatsuka: A Pioneer in Permanent Magnet Technology

Introduction: Atsushi Nakatsuka, an esteemed inventor based in Kanagawa, Japan, has made significant strides in the field of permanent magnet technology. With a remarkable portfolio of nine patents, Nakatsuka's innovations focus on enhancing the performance and manufacturing processes of permanent magnets using advanced materials and techniques.

Latest Patents: His most recent inventions include a groundbreaking patent for a permanent magnet and the method of manufacturing it. This invention features a Dysprosium (Dy) and Terbium (Tb) film layer applied to the surface of an iron-boron-rare earth sintered magnet, which improves the material's coercive force through diffusion into grain boundary phases. The manufacturing method involves an innovative film-forming step where metal evaporating material, including at least one of Dy or Tb, is vaporized and then adhered to the magnet's surface. Additionally, the process includes heat treatment to diffuse these metal atoms into the grain boundary phases, also incorporating materials like Neodymium (Nd) and Praseodymium (Pr).

Atsushi Nakatsuka also holds a patent for a vacuum vapor processing apparatus designed to create a metal vapor atmosphere within a processing chamber. This device facilitates the adhesion of metal atoms to the surface of the object to be processed, further enhancing the efficacy of surface treatments.

Career Highlights: Nakatsuka has established himself as a key figure in the development of permanent magnets at Ulvac, Inc., a company known for its innovative solutions in vacuum technology. His contributions to the field are propelled by his commitment to advancing material science and manufacturing processes.

Collaborations: Throughout his career, Nakatsuka has collaborated with talented colleagues such as Hiroshi Nagata and Kyuzo Nakamura, contributing to the collective knowledge and innovation at Ulvac, Inc. These collaborations have helped to enhance the scope and applicability of their inventions, driving advancements in technology.

Conclusion: Atsushi Nakatsuka's work exemplifies the spirit of innovation, advancing the field of permanent magnets through his patented inventions and collaborative efforts. His contributions are critical not just for the technology itself, but also for the advancements they enable across various industries, solidifying his legacy as a prominent inventor in the realm of material science.

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