Location History:
- Tokyo, JP (1995)
- Hamura, JP (1997 - 2007)
Company Filing History:
20 out of 42,485 
2 out of 336 
1 out of 3,781 
Years Active: 1995-2007
Title: Tetsuya Tsujikawa: A Pioneer in Semiconductor Memory Technology
Introduction
Tetsuya Tsujikawa, a renowned inventor based in Hamura, Japan, has contributed significantly to the field of semiconductor memory technology. With a remarkable portfolio of 25 patents, his innovative work continues to influence the landscape of non-volatile memory devices and methods.
Latest Patents
Among his latest inventions are two pivotal patents related to non-volatile multi-level semiconductor flash memory devices. These devices utilize a unique approach where multiple threshold values are set to store multi-level data within a memory cell. The process involves writing multi-bit data into the memory cells based on address and control signals, facilitating effective reading and erasing. Notably, the memory array he developed can be accessed through a three-dimensional addressing system, denoted by X, Y, and Z coordinates, further enhancing the discrimination of multi-bit data.
Career Highlights
Tetsuya Tsujikawa has had a fruitful career with significant contributions while working at Hitachi, Ltd. His expertise in semiconductor technology and memory systems has solidified his reputation as an innovator in the industry.
Collaborations
Throughout his career, Tsujikawa has collaborated with accomplished professionals, including Atsushi Nozoe and Michitaro Kanamitsu. These partnerships have played a crucial role in advancing their collective research and innovations in semiconductor memory technology.
Conclusion
Tetsuya Tsujikawa's dedication to innovation in semiconductor memory devices is evident through his extensive patent portfolio and successful collaborations. His contributions are vital in shaping the future of technology, particularly in developing efficient and reliable memory solutions.
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.