Japan · Procurement Portal award records · Supplier record

Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306

株式会社コウケン

Line: Building construction and support and maintenance and repair services (UNSPSC 72100000)Register loaded to September 2026Compiled 12 October 2026

Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306 — Japan · Procurement Portal award records · Supplier record: 6 award notices, all years (Dec 2024 – Jul 2026); 6 since January 2024 (3 buyers); 677th rank in the line (of 3,215 suppliers · 0.0%); 36 buyers never served (5,762 notices in the line from them).

Assay record ASY-JP-1580YC3147 · Cite as: Assay Systems, “Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306 in the Procurement Portal register for Japan”, https://assay-systems.com/register/jp/koken-co-ltd-ibaraki-corporate-number-9050001044306/

6
award notices, all years
Dec 2024 – Jul 2026
6
since January 2024
3 buyers
677th
rank in the line
of 3,215 suppliers · 0.0%
36
buyers never served
5,762 notices in the line from them

Own record by year

award notices, 2014 onward
1
3
2
2014201520162017201820192020202120222023202420252026

Who buys from Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306

since January 2024
3buyers
6notices
50%top buyer
Ministry of Land, Infrastructure, Transport and Tourism50.0%
3 notices
Ministry of Justice33.3%
2 notices
Ministry of the Environment16.7%
1 notice

The line

since January 2024
13,083award notices
39buyers
3,215suppliers
9.0%held by top ten

Building construction and support and maintenance and repair services (UNSPSC 72100000)

4,476
4,563
4,044
202420252026Jan–Sep
677thof 3,215 suppliers
4notices name Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306
0.0%share of the line
0.0%of 5,874 notices from Ministry of Land, Infrastructure, Transport and Tourism
0.2%of 1,111 notices from Ministry of Justice
0.3%of 336 notices from Ministry of the Environment
693new suppliers since 2024

Buyers that buy the line and never named Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306

since April 2014
36buyers
5,762notices since 2024
33buyers took a new supplier
1,012suppliers came in that way
Ministry of Finance
1,127 notices
Ministry of Health, Labour and Welfare
763 notices
Japan Coast Guard
736 notices
National Tax Agency
603 notices
Supreme Court of Japan
502 notices
Public Prosecutors Office
347 notices
Ministry of Defense
291 notices
Ministry of Agriculture, Forestry and Fisheries
275 notices
Japan Meteorological Agency
163 notices
Cabinet Office
147 notices
National Police Agency
146 notices
Ministry of Internal Affairs and Communications
137 notices
House of Representatives
95 notices
Forestry Agency
80 notices
House of Councillors
79 notices
Digital Agency
49 notices
Ministry of Economy, Trade and Industry
41 notices
Imperial Household Agency
37 notices
Ministry of Education, Culture, Sports, Science and Technology
31 notices
National Personnel Authority
17 notices
Fire and Disaster Management Agency
16 notices
Children and Families Agency
13 notices
Japan Patent Office
13 notices
Ministry of Foreign Affairs
11 notices
Fisheries Agency
10 notices
Nuclear Regulation Authority
6 notices
Board of Audit of Japan
5 notices
Japan Transport Safety Board
5 notices
Central Labour Relations Commission
4 notices
Consumer Affairs Agency
4 notices
Cabinet Secretariat
3 notices
Financial Services Agency
2 notices
Cabinet Legislation Bureau
1 notice
Casino Regulatory Commission
1 notice
Japan Fair Trade Commission
1 notice
Reconstruction Agency
1 notice

Suppliers next to it in the line

since January 2024
Aiden Co., Ltd.3 buyers
4 notices
Aiesukuru Co., Ltd.1 buyer
4 notices
Amenity Japan Co., Ltd.3 buyers
4 notices
Koken Co., Ltd., Ibaraki, Corporate Number 9050001044306
4 notices

All 3,215 suppliers in the line

The extract

Every buyer, every supplier, award date, notice number and value where one is disclosed, behind the figures above.

Request extract

Source: successful bid records (open data) for Japan in the Procurement Portal of the Government of Japan, Digital Agency, p-portal.go.jp, which permits reuse including commercial use under its terms of use; awards from April 2014 to 30 September 2026, accessed 12 October 2026.Assay Systems has changed the data.