| Jan 1951 |
Katsura Marumo founded Marumo Seisakusho in Ota-ku, Tokyo. |
| Jun 1955 |
Katsura Co., Ltd. established with a capitalization of 300,000 yen. |
| Oct 1956 |
Japan’s first direct pressure hand torch burner launched. (patented) |
| Apr 1962 |
Katsura got a patent on the LPG hot air generator. |
| Mar 1964 |
Sales launch of the greenhouse LPG gas burners. |
| Sep 1964 |
Katsura produced the burner for the flame holder of Tokyo Olympics. |
| Apr 1966 |
Yamanashi factory established in Sutama, Yamanashi Prefecture. |
| May 1968 |
LPG regulator approved by UL. |
| Apr 1969 |
All the LPG regulators passed the Japanese national assay. |
| Oct 1971 |
Capital increased to 75,000,000 yen. |
| Jul 1972 |
Company head office and combustion equipment factory relocated to Ayase, Kanagawa Prefecture. |
| Jan 1973 |
The production method of the jet tube burner was licensed by Burner Systems International, Inc. (U.S.A.) |
| Oct 1973 |
Exclusive technical collaboration agreement was made with Pyronics Inc. (U.S.A.) for the production and sales of the industrial combustion equipment. |
| Jul 1975 |
Capital increased to 150,000,000 yen. |
| Jul 1977 |
Technical collaboration agreement was made with ITT Industries Inc. (U.S.A.) |
| Jul 1980 |
Capital increased to 240,000,000 yen. |
| Jan 1982 |
LPG greenhouse heater launched. |
| Jan 1983 |
Emergency gas shutoff valves were approved by Tokyo Gas Co., Ltd., Osaka Gas Co., Ltd. and Toho Gas Co., Ltd. |
| Sep 1984 |
Die-casting lines started production at Yamanashi factory. |
| Dec 1986 |
Emergency gas shutoff valve, the Gas breaker and Automatic change-over regulator with shutoff function, the Hybrid breaker, launched. |
| Mar 1987 |
Yamanashi new factory established. |
| Oct 1988 |
In commemoration of the 35 anniversary of the company, head office relocated to Naka-ku, Yokohama City. |
| Jun 1989 |
Exclusive contract was made with Gaz Industrie (France) for the production and sales of the far-infrared ray combustion equipment. |
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| Apr 1992 |
Exclusive contract was made with Robur S.p.A. (Italy) for the production and sales of the gas chiller/heater. |
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| Oct 1992 |
Capital increased to 313,580,000 yen. |
| May 1993 |
Gas combustion engineering laboratory established at Kanagawa factory. |
| Oct 1993 |
Under commission of Agency for Natural Resources and Energy, the development of the GG air conditioner started. |
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| Apr 1996 |
Field test of the GG air conditioner was done. |
| Jun 1997 |
Katsura received the order for the torches of the torch relay of the Winter Olympics in Nagano. |
| Sep 1997 |
The acquisition of Tokyo Gasdenro Co., Ltd. |
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| Sep 1998 |
Capital increased to 382,740,000 yen. |
| Apr 2000 |
The acquisition of Shin Nihon Piping Co., Ltd. Yamanashi factory obtained a certification of ISO9001. |
| May 2000 |
Company head office relocated to Kanagawa-ku, Yokohama City. |
| Sep 2000 |
Katsura started to import bulk tanks from Mexico. |
| Apr 2002 |
Yamanashi factory obtained a ministerial approval of METI. |
| Feb 2007 |
Capital increased to 444,014,000 yen. |
| May 2011 |
Katsura Vietnam Co., Ltd. was established in Vietnam as a 100-percent subsidiary of Katsura Co. Ltd. |
| Sep 2011 |
Gasdenro Danyang Co., Ltd. was established in China as a 100-percent subsidiary of Tokyo Gasdenro Co., Ltd. |
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