| 1992 | Jul | Kyushu Waken, Ltd. founded in Kasuga City, Fukuoka |
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| 1995 | Jun | Renamed as Platz Co., Ltd. |
| 1997 | Apr |
Launched Electric Bed PKB Series
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| 2000 | Jun | Increased Capital to 220 million yen |
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| 2001 | Jul | Transferred Main Office (From Kasuga City, Fukuoka to Onojo City, Fukuoka) |
| Dec |
Launched Care Insurance Rental Bed PZB-V310 Series
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| 2003 | Apr | Opened Fukuoka Factory (Onojo City, Fukuoka) |
| Jun | Achieved annual sales of 10 thousand beds | |
| 2004 | Jan | Opened Kanto Branch (Minato-ku, Tokyo) |
| Jul | Opened Kansai Branch (Chuo-ku, Osaka City) | |
| 2006 | Jan | Opened Tokai Branch (Komaki City, Aichi) |
| 2007 | May | Certified Quality Management Standard ISO9001: 2000 |
| Nov |
Launched Care Insurance Rental Bed Miolet Series
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| 2008 | Jun | Achieved annual sales of 20 thousand beds |
| Nov | Launched Home Care Electric Bed Carelet Series | |
| 2009 | Mar | Increased Capital to 285 million yen |
| Mar |
Launched Ultilet, A Low-Floor Electric Bed for Care Facility
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| Jun | Certified JIS Care Bed Standard JIS T 9254: 2009 for Miolet Series | |
| Sep | Launched Home Care Bed Primolet |
| 2010 | May | Recertified Quality Management Standard ISO9001: 2008 |
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| Jun | Achieved Annual Sales of 30 thousand beds | |
| Aug | Transferred Main Office (Onojo City, Fukuoka) | |
| Nov | Opened Tohoku Branch (Sendai City, Miyagi) | |
| Nov | Opened Ho Chi Minh Office (Vietnam) | |
| Nov |
JIS Certified the Kneeparo – the Auto-Lock Bed Grip Kneeparo
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| 2011 | May | Transferred Tokai Branch (Nagoya City, Aichi) |
| Jun | Achieved Annual Sales of 40 thousand beds | |
| Sep |
The home care bed “Primolet” received JIS certification and began sales efforts.
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| Dec |
The home care bed “Miolet ForU” series received JIS certification and began sales efforts.
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| 2012 | Apr |
The motorized home care bed “Carelet” series received JIS certification and began sales efforts.
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| Aug | Founded Platz Vietnam Co., Ltd. for final inspections (Vietnam) | |
| Sep | Founded the Chu-Shikoku Branch Office (Hiroshima Prefecture, Fukuyama City) | |
| Sep |
Began sales efforts of the “Ultilet ToU”, a motorized care bed for institutions
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| 2013 | Nov | Founded the Hokkaido Branch Office (Hokkaido, Sapporo City) |
| 2014 | Apr |
Began sales efforts of the “Carelet f”, “Carelet neoα”, & “Carelet niko”, motorized beds for independent care
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| Sep |
The home care bed “MioletⅡ” received JIS certified and began sales efforts
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| Sep |
Began sales efforts of the “KneeparoⅡ”, an auto-locking grip for care beds.
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| 2015 | Mar | Listed on the Tokyo Stock Exchange Mothers and Fukuoka Stock Exchange Q-Board |
| Apr |
Began sales efforts of the home care bed “83cm Wide, MioletⅡ”
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| Apr |
Increased Capital to 582,050,000 Yen |
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| Aug |
Opened Shanghai Office(China) |
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| Dec |
Began sales efforts of the wooden shelf board and wooden board type home care beds, “MioletⅡ”.
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| Dec |
Began sales efforts of the shelf board type, low-floor electric bed for care facilities, “Ultilet”.
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| 2016 | Feb |
Began sales efforts of the reclining beds, “Carelet Doluce”, “Carelet neo α Ⅱ”, ”Carelet f Ⅱ”, and “Carelet Simply”.
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| Apr |
Began sales efforts of the automated lighting system that illuminates the bottom of the bed by sensing the bed users’ presence.
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| Jul |
Began sales efforts of the automated system that senses the user getting out of bed and recognizes the user’s extended absence.
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| Aug |
Began sales efforts of the Hospital Bed “P300 Series”
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| 2017 | Jan |
Began sales efforts of the extra low-to-the-floor nursing care bed, “Rafio”.
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| Dec |
Began sales efforts of the Care Facility Bed “Ardel”.
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| 2018 | Apr |
Began sales efforts of the “Kneeparo L”, an Lever lock bed grip
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| May |
Began sales efforts of the “Kneeparo +”, an Auto lock bed grip
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| Sep |
Masahiro Jo was appointed President and CEO |
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| 2019 | May |
Transferred Kansai Branch(Higashiosaka City, Osaka) |
| Nov | Transferred Tohoku Sales Office(Sendai City, Miyagi) |
| 2021 | Feb | Transferred Tokai Branch (Nagoya City, Aichi) |
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| Aug | Transferred Kanto Branch (Ota-ku, Tokyo) | |
| 2023 | Jul | Tadahiro Kawachiya was appointed President and CEO |
| 2024 | Nov | Won The Product Safety Awards (PS Awards Ministry of Economy,Trade and industry,Japan) |
| 2025 | Mar | Listed on the Tokyo Stock Exchange Standard Market |
| Mar |
Changed company logo
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