Company Filing History:
11 out of 35,756 
2 out of 10 
1 out of 832,912 Years Active: 1997-2016
Title: Takahisa Shirakawa: Innovator of Authentication Technologies
Introduction
Takahisa Shirakawa, based in Tokyo, Japan, is a renowned inventor with a remarkable portfolio of 14 patents. His contributions primarily focus on enhancing information security and authentication methods, showcasing his profound impact on the technology landscape.
Latest Patents
Shirakawa's latest innovations include an array of advanced technologies aimed at improving user authentication. These patents comprise an input information authentication device, server device, input information authentication system, and the corresponding program. One of his notable inventions is designed to make the guessing of authentication information difficult for unauthorized third parties, even when they can observe the user's hand and the input screen. The system divides input keys into two distinct regions, transitioning between states based on displayed content. This ingenious mechanism ensures that inputs identified during a state where the key is in a non-active region are treated as dummy inputs. Furthermore, Shirakawa has developed an information processing device that effectively retains program execution states, allowing applications to resume from a previously stored image in the main memory.
Career Highlights
Shirakawa has held significant positions in various reputable companies, including NEC Corporation and NEC Personal Computers, Ltd. His work in these organizations has been pivotal in advancing their technological offerings and has contributed heavily to the field of information technology and security.
Collaborations
In his career, Takahisa Shirakawa has collaborated with notable professionals, including Reiko Kanamaru. Their partnership highlights the collaborative spirit of innovation within the tech industry, leading to advancements that benefit users worldwide.
Conclusion
Takahisa Shirakawa stands out as a leading figure in the realm of information security technology. His patents not only showcase his inventive prowess but also reflect a commitment to enhancing user privacy and security in an increasingly digital world. Through his continuous contributions and collaborations, Shirakawa is poised to inspire future innovations in the field.