Registration in fiscal year 2021

  [ Essential historical materials for science and technology ]

Registration Number	Name (Model, etc.)	Registration Category	Location / Year Manufactured
Number 302	Fischer-Tropsch process for synthetic oil - catalysts and samples - Liquid hydrocarbons from coal and natural gas - PDF file download	Category 1	Uji-shi, Kyoto 1937–1939 approx.
Number 303	Commercialization of synthetic oil production via the Fischer-Tropsch process - Mass production of liquid hydrocarbon from coal and natural gas - PDF file download	Category 1	Takikawa-shi, Hokkaido 1938-1953
Number 304	The First Coke Oven Batteries with Vertical Heating Flues built in Japan, designed by Dr. Kageyoshi Noro - The origin of coke ovens in Japan - PDF file download	Category 2	Kamaishi-shi, Iwate 1893 (construction begins) - 1894 (construction completed)
Number 305	Room air conditioner with horizontal scroll compressor Compact outdoor unit (CU-G25V) - Compact, slimline air conditioner unit with low-noise operation - PDF file download	Category 1	Kusatsu-shi, Shiga 1993
Number 306	CITIZEN EXCEED Cal. 1930 - First ever quartz watch with internal IC thermo-compensation - PDF file download	Category 1	Nishitokyo-shi, Tokyo 1981
Number 307	SEIKO SPRING DRIVE 7R68 - Spring Drive, the world-first spring-driven watch regulated by a high-precision quartz oscillator - PDF file download	Category 1	Chuo-ku, Tokyo 1999
Number 308	Outdoor Watch with Built-in GPS PRO TREK SATELLITE NAVI PRT-1GP - First ever outdoor watch with GPS navigation - PDF file download	Category 1	Setagaya-ku, Tokyo 1999
Number 309	100km VAD Single-Mode Optical Fiber - The age of optic fiber arrives - PDF file download	Category 1	Musashino-shi, Tokyo 1980
Number 310	Canon AE-1 35 mm single lens reflex camera - A single-lens reflex camera for the amateur photographer - PDF file download	Category 1	Ota-ku, Tokyo 1976
Number 311	Astronomy training system (Goto Planetarium Model M-1 for medium-sized domes) - Accurately projects position of stars and planets - PDF file download	Category 1	Koto-ku, Tokyo 1965
Number 312	Minolta MS-10 planetarium - Recreating the starry night sky - PDF file download	Category 1	Chiyoda-ku, Tokyo 1966
Number 313	Planetarium Projector (fabricated by Nishimura Co. Ltd ) - Prototype from the early stages of planetarium production in Japan - PDF file download	Category 2	Tsuyama-shi, Okayama 1967
Number 314	Soni-Tape (Magnetic tape for audio recording) - First magnetic recording tape in Japan - PDF file download	Category 1	Minato-ku, Tokyo 1950
Number 315	Avilyn magnetic powder, needle-shaped gamma iron oxide magnetic powder,developed and manufactured by TDK. - First successful commercialization of cobalt coated iron oxide magnetic tape - PDF file download	Category 1	Nikaho-shi, Akita 1973
Number 316	Coated magnetic tape for computer backup FUJIFILM DLT tape Ⅳ(Model number:Data cartridge DLTⅣ FB D) - High-density coated digital recording tape - PDF file download	Category 1	Odawara-shi, Kanagawa 1996
Number 317	Documents relating to BSS (Block System Stabilizer) , wide-area protection system for power system - Preventing major power outage - PDF file download	Category 2	Osaka-shi, Osaka Original data (around 1974), bound replica (2021)
Number 318	Documents relating to an On-Line Transient Stability Control system for trunk power system - To prevent wide Area Blackout - PDF file download	Category 2	Nagoya-shi, Aichi 1995
Number 319	Boso area step out prevention relay system - Preventing major power disruptions - PDF file download	Category 2	Kisarazu-shi, Chiba 2007
Number 320	Optical Head System "TAOHS-L" - Revolutionary CD player optical head drive - PDF file download	Category 1	Hachioji-shi, Tokyo 1982
Number 321	Aspherical plastic lens for compact disc player - The aspherical plastic pickup lens that helped birth a ¥1 trillion industry - PDF file download	Category 1	Hachioji-shi, Tokyo 1984
Number 322	That's CD-R: the first CD-R in the world - First ever recordable optical recording media - PDF file download	Category 1	Takasaki-shi, Gunma 1989
Number 323	Earliest Rolling Bearing Design Drawing in Existence in Japan (Non-Separable Thrust Ball Bearing) - Earliest surviving design of rolling bearings in Japan - PDF file download	Category 2	Shinagawa-ku, Tokyo 1916
Number 324	Sealed Clean Ball Bearings for Transmissions - Japanese sealed ball bearing delivers major improvement in durability - PDF file download	Category 1	Fujisawa-shi, Kanagawa In around 2019
Number 325	Ceramic bearing for automobile turbocharger unit - First-ever mass-produced ceramic bearing for automobile - PDF file download	Category 1	Kashiwara-shi, Osaka 1998

▲ Go to top