Company Filing History:
Years Active: 2007-2013
Title: Nobutaka Ishikawa: Innovator in Mobile Communications
Introduction
Nobutaka Ishikawa is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of mobile communications, holding a total of 13 patents. His innovative work has paved the way for advancements in how mobile networks operate and communicate.
Latest Patents
One of Ishikawa's latest patents is a method and system for mobile communications. This invention involves a process where a network pages the temporary user mobile identifier of a mobile station, prompting the mobile station to respond to the network. The network then verifies the authenticity of the user using a ciphering key that corresponds to the temporary user mobile identifier and a random number. If the identifier is authenticated, the normal incoming call acceptance procedure is executed. In cases where the mobile station is authenticated but the identifier is incorrect, the network assigns a new temporary user mobile identifier and halts the current communication. This system also includes features for encipherment negotiation and diversity handover, enhancing the efficiency of mobile communications.
Career Highlights
Throughout his career, Ishikawa has worked with notable companies such as NTT Docomo, Inc. and NTT Mobile Communications Network, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in mobile technology.
Collaborations
Ishikawa has collaborated with several talented individuals in his field, including Motoshi Tamura and Mutsumaru Miki. These partnerships have contributed to the success of his projects and the advancement of mobile communication technologies.
Conclusion
Nobutaka Ishikawa's contributions to mobile communications have been invaluable. His innovative patents and collaborations with industry professionals continue to influence the development of mobile technology. His work exemplifies the spirit of innovation that drives the industry forward.