Location History:
- Tokyo-To, JP (2005)
- Suwa, JP (2005 - 2011)
- Tsu, JP (2010 - 2013)
- Nagano, JP (2011 - 2014)
- Shiojiri, JP (2014 - 2021)
Company Filing History:
36 out of 33,404 
1 out of 10,295 
1 out of 101 Years Active: 2005-2021
Title: Innovations by Hirofumi Sakai: A Pioneer in Liquid Discharge Technology
Introduction
Hirofumi Sakai, a prolific inventor based in Suwa, Japan, holds an impressive portfolio of 38 patents. His innovative work is particularly focused on liquid discharge technology, making significant contributions to the fields of electronics and material sciences.
Latest Patents
Among his latest patents are two noteworthy inventions: the liquid discharging head and liquid discharging apparatus, which features a unique nozzle design. This design includes a first nozzle portion with a smaller cross-sectional area and a second nozzle portion with a larger area. The innovation revolves around a liquid chamber that communicates with the nozzle and a piezoelectric element that adjusts the pressure within this chamber. This mechanism allows for precise control of liquid discharge by manipulating the liquid surface's shape under varying pressures.
Additionally, Sakai developed a droplet discharge method that incorporates a region setting step and a discharging step. This method facilitates the precise landing of droplets in a specific region, a vital process in the manufacturing of devices like organic electroluminescent (EL) devices and color filters.
Career Highlights
Sakai's career includes significant stints at notable companies such as Seiko Epson Corporation and Tokyo Electron Limited. His work at these corporations has helped bridge the gap between theoretical research and practical applications, especially in liquid dispensing technologies.
Collaborations
Throughout his career, Hirofumi has collaborated with several professionals, including Takahiro Katakura and Keigo Sugai. These collaborations have further enriched his work, resulting in groundbreaking advancements in liquid discharge systems.
Conclusion
Hirofumi Sakai’s dedication to innovation is evident in his extensive patent portfolio and collaborative efforts. His contributions significantly advance liquid discharge technology, emphasizing precision and efficiency, which are critical in modern manufacturing processes. As technology continues to evolve, Sakai’s work will undoubtedly pave the way for future innovations in related fields.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.