Company Filing History:
6 out of 223 
1 out of 105 
1 out of 7 Years Active: 1998-2009
Title: **The Innovations of Hirofumi Iemura**
Introduction
Hirofumi Iemura is a notable inventor based in Tokyo, Japan, recognized for his contributions to the field of toner development. With a total of seven patents to his name, Iemura has significantly impacted the technology behind electrostatic image processing.
Latest Patents
Hirofumi Iemura's latest patents showcase his innovative work with polyester resins used in toner applications. One patent describes a novel polyester resin for toner that includes disproportionated rosin and terephthalic or isophthalic acid as component materials. Iemura's formulation incorporates a glycidyl ester of a tertiary fatty acid and an aliphatic diol as part of the polyester's alcohol component. By optimizing the molar ratios of these components, his inventions aim to enhance the performance of toner systems.
Another significant patent outlines an image-forming process that utilizes an electrostatic image developer. This process incorporates silicon carbide fine powder as a key ingredient, facilitating the effective development of electrostatic latent images on inorganic photoreceptors. The careful selection of ingredient sizes and specific surface areas plays a critical role in ensuring efficient image transfer and cleanup processes.
Career Highlights
Throughout his career, Iemura has worked for prominent companies in the industry, including Toyo Ink Manufacturing Company and Toyo Ink Mfg. Co., Ltd. His experience at these firms has likely contributed to his deep understanding of the complexities surrounding toner and imaging technologies, leading to his patented innovations.
Collaborations
Iemura has collaborated with notable professionals in his field, including Yasushi Nakanishi and Koichi Ogawa. Their shared expertise and insights have undoubtedly influenced and enriched the development of innovative solutions in toner applications.
Conclusion
Hirofumi Iemura has established himself as a key figure in the realm of toner innovation through his inventive contributions and collaboration with industry professionals. His focus on advanced polyester resins and detailed image-forming processes demonstrates his commitment to enhancing imaging technology. As his portfolio continues to grow, Iemura's work will likely pave the way for future advancements in this critical area.