Company Filing History:
13 out of 1,641 
2 out of 93 
1 out of 116 
Years Active: 1981-2002
Title: Hajime Kakumaru: Innovator in Photosensitive Technology
Introduction
Hajime Kakumaru is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of photosensitive elements, holding a total of 14 patents. His work has advanced the technology used in phosphor patterns, which are essential in various applications.
Latest Patents
One of Hajime Kakumaru's latest patents involves a photosensitive element for preparing a phosphor pattern. This invention discloses a phosphor pattern that comprises a substrate with unevenness and a phosphor layer formed on the inner surface of a concave portion of the substrate. The patent specifies that the phosphor pattern thickness ratio (x)/(y) must satisfy a range of 0.1 to 1.5. Here, (x) represents the thickness of the phosphor pattern formed on an uneven wall surface at a specific position, while (y) is the thickness at another position within the concave portion. This innovation also includes processes for preparing the phosphor pattern.
Career Highlights
Hajime Kakumaru has worked with notable companies such as Hitachi Chemical Company, Ltd. and Adeka Argus Chemical Co., Ltd. His experience in these organizations has allowed him to develop and refine his expertise in photosensitive technologies.
Collaborations
Throughout his career, Hajime has collaborated with talented individuals, including Hiroyuki Tanaka and Hideyasu Tsuiki. These partnerships have contributed to the success of his projects and innovations.
Conclusion
Hajime Kakumaru is a distinguished inventor whose work in photosensitive elements has led to significant advancements in technology. His contributions continue to influence the field and inspire future innovations.
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.