Company Filing History:
Years Active: 1994-2011
Title: Innovations by Masaharu Nakagawa
Introduction
Masaharu Nakagawa is a prominent inventor based in Fukuoka, Japan. He has made significant contributions to the field of medical materials, particularly in the development of bone prosthetics and dental alloys. With a total of 2 patents, Nakagawa's work is recognized for its innovative approach to solving complex medical challenges.
Latest Patents
One of Nakagawa's latest patents is a medical bone prosthetic material and the process for producing it. This invention addresses critical requirements for bone substitute materials, including no histotoxicity, osteoconductivity, bone replacement capability, and necessary mechanical strength for bone reconstruction operations. The material is primarily composed of carbonate apatite and is produced by contacting a block of calcium compound with a phosphate-containing solution. This method ensures that the calcium compound block contains substantially no powders, and at least one of the components contains a carbonate group, all without any sintering.
Another notable patent is for a dental gold alloy with age-hardenability at intraoral temperature. This dental gold alloy is designed to be soft enough for adjusting a patient's occlusal condition while being age-hardenable at temperatures typically found in a patient's oral cavity. The alloy consists of 82-67% by weight of gold, 18-33% by weight of copper, and 2-8 at % of an age-hardening accelerator, which includes metals such as gallium, aluminum, and zinc. The alloy undergoes a solution treatment by heating at 670-700°C and quenching in water, resulting in improved corrosion resistance.
Career Highlights
Masaharu Nakagawa is affiliated with Kyushu University, where he continues to advance his research and innovations in medical materials. His work has garnered attention for its practical applications in healthcare, particularly in enhancing the quality of life for patients requiring bone and dental replacements.
Collaborations
Nakagawa has collaborated with notable colleagues, including Shigeki Matsuya and Kunio Ishikawa. These partnerships have contributed to the development of his innovative patents and have fostered a collaborative environment for research and development.
Conclusion
Masaharu Nakagawa's contributions to the fields of medical prosthetics and dental materials exemplify the impact of innovation in healthcare. His patents reflect a commitment to improving patient outcomes through advanced materials science.