| Jun 1974 |
Established Koike BOC with investment from Koike Sanso Kogyo Ltd. and BOC. |
| Apr 1978 |
Renamed to Koike Medical Co., Ltd. |
| Jul 1979 |
Began import of nitrous oxide. |
| Nov 1983 |
Built Gunma plant in Isezaki city and began manufacture of nitrous oxide. |
| Jul 1988 |
Built Shiroi plant in Chiba and started manufacture of sterilizing gas. |
| Oct 1988 |
Began import of oxygen concentrator, Mark 5 (Nidek Medical Products, Inc. US). |
| Nov 1989 |
Began import of liquid oxygen systems, Liberator and Stroller (Minnessota Valley Engineering, Inc. US). |
| Jun 1992 |
Increased investment to 50 million yen. |
| Sep 1992 |
Began import of pulse oximeters (Biochem, US). |
| Oct 1992 |
Began import of hyperbaric oxygen chamber, BARA-MED (Environmental Tectonics Corporation, US). |
| Oct 1993 |
Relocated headquarters to Matsushima-ku, Edogawa, Tokyo. |
| Dec 1995 |
Began sales of oxygen conserving device, Sanpo. |
| Nov 1996 |
Began import of nitrous oxide (Nellcor Puritan Bennett LLC, US). |
| Jul 1996 |
Established and implemented CI. |
| Jun 1997 |
Increased investment to 100 million yen. |
| Jul 1997 |
Expanded Gunma plant in Isezaki city. |
| Oct 1997 |
Established IRS (Inspection, Repair and Services) site at the headquarters. |
| Nov 1997 |
Began manufacture and sales of wall mounted suction unit with disposable liner, YOX DISPO. |
| Apr 1998 |
Began import of CPAP for Sleep Apnea treatment, Silenzio (Nidek Medical Products, Inc. US). |
| Sep 1998 |
Began import of Total Care Bed System (Hill-Rom, Inc., US). |
| Oct 1999 |
Built a display room in the headquarters building. |
| Nov 2000 |
Increased the investment to 200 million yen. |
| Mar 2002 |
Increased investment to 211.98 million yen. |
| Aug 2002 |
Increased investment to 261.96 million yen. |
| Apr 2005 |
Began import of pulse oximeter, Finger BePul2. |
| Jul 2006 |
Began import of surgical lights, Chromophare series and surgical beds (Berchtold GmbH & Co., Germany). |
| Apr 2007 |
Began sales of valve integrated pneumatic conserving device, flow gentle+ QUATRO. |
| Jan 2008 |
Began sales of CPAP, Jusmine. |
| Feb 2009 |
Began sales of portable oxygen concentrator, KM-X. |
| Jun 2009 |
Began import of pulse oximeter, Surfing PO (Beijing Choice Electronic Technology Co.,Ltd.CHN). |
| Dec 2009 |
Began sales of sleep diagnostic device, Simon. |
| Jun 2010 |
Began sales of wall mounted suction unit , YOX GL S511. |
| Nov 2010 |
Began import of firebreak, Firesafe(BPR Medical Ltd.,UK). |
| Jan 2011 |
Began import of respiratory mask, J-FIT MASK(HSINER CO.,LTD,TWN). |
