Location History:
- Katsuta, JA (1976)
- Yokohama, JP (1980)
- Osaka, JP (1987)
Company Filing History:
3 out of 1,112 
3 out of 42,508 
Years Active: 1976-1987
Title: The Innovative Contributions of Takao Ketori
Introduction
Takao Ketori is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of tape cartridge technology, holding a total of 5 patents. His work has been influential in enhancing the functionality and design of tape cartridges.
Latest Patents
Among his latest patents is the "Tap Cartridge," which features a pocket for drawing out a recording tape and a shutter that opens and closes the bottom opening of the pocket. This design includes a plurality of ribs on the inner face of the shutter to ensure smooth sliding movement. Another notable patent is the "Tape Cartridge with Extending Reference Surfaces." This innovation provides a reference face on the front end portion of the side wall of the cartridge, allowing for proper positioning in a tape player while avoiding interference with the front lid.
Career Highlights
Takao Ketori has worked with prominent companies such as Hitachi Maxell, Limited and Hitachi, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in tape technology.
Collaborations
Throughout his career, Ketori has collaborated with talented individuals, including Takashi Sumida and Sigeo Sasaki. These collaborations have contributed to the advancement of his inventions and the overall progress in the field.
Conclusion
Takao Ketori's contributions to tape cartridge technology demonstrate his innovative spirit and dedication to improving design and functionality. His patents reflect a commitment to excellence and a significant impact on the industry.