| 1967-07 |
Started earth and sand processing business as Ishizaka-gumi |
| 1971-09 |
Ishizaka-gumi Co., Ltd. was established in Nerima Ward with a capital of 700,000 yen. |
| 1975-09 |
Started industrial waste collection, transportation, and treatment business |
| 1978-11 |
Capital increased to 7 million yen |
| 1982-03 |
The company name was changed to Ishizaka Sangyo Co., Ltd. The headquarters were relocated to 1494-19 Kamitome, Miyoshi Town. |
| 1986-06 |
Obtained a construction business license from the Governor of Saitama Prefecture. |
| 1986-12 |
Obtained development permission under Article 29 of the City Planning Act. The company name was changed to Ishizaka Inc. |
| 1987-01 |
Obtained permits for collection, transportation, and disposal business in Chiba Prefecture, Kanagawa Prefecture, Yokohama City, Kawasaki City, and Yokosuka City. Established a new wood chip recycling plant and obtained approval from Saitama Prefecture. |
| 1988-06 |
Obtained development permission under Article 29 of the City Planning Act. |
| 1988-10 |
Established a new concrete recycling plant. |
| 1989-03 |
Established a new intermediate treatment facility and obtained permits for waste plastic volume reduction and crushing machines. |
| 1990-12 |
Obtained permits under Article 51, Paragraph 1 of the Building Standards Act of Saitama Prefecture, Article 29 of the City Planning Act, and Article 14 of the Waste Management and Public Cleansing Act. |
| 1991-03 |
Obtained collection and transportation permits for 16 types of waste. |
| 1991-04 |
Established new sorting plant, neutralization equipment, wood chip (and others) plant, and equipment for crushing and volume reduction of waste plastics. |
| 1994-04 |
Registered as a waste recycling operator. |
| 1994-11 |
Capital increased to 40 million yen. |
| 1998-04 |
Capital increased to 70 million yen. |
| 1999-04 |
Implemented a manifest management system and a gypsum board processing system. |
| 2000-09 |
Introduction of an appraisal accounting system. |
| 2000-09 |
Introduction of a bedding chip crusher at the chip plant. |
| 2000-09 |
Obtained license for waste collection and transportation in Sagamihara City. |
| 2002 |
Noriko Ishizaka became President (without representative rights) of Ishizaka Inc. |
| 2002-02 |
Installation of a bag filter at the chip plant |
| 2002-02 |
Completion of noise barrier measures inside the factory |
| 2002-03 |
Introduction of low-noise heavy machinery for use inside the factory |
| 2002-09 |
Installation work of the volume reduction plant and acquisition of permits |
| 2002-10 |
Completion of the volume reduction plant |
| 2002-12 |
Installation of a bag filter at the volume reduction plant |
| 2002-12 |
Installation of a mist net spraying system at the sorting and classification plant |
| 2003-06 |
Completion of the model walking garden 'Kabokuen' (approx. 5,000 m²), using recycled wood chips |
| 2003-09 |
Conclusion of the Preliminary Consultation Agreement for Development Activities with Miyoshi Town |
| 2003-10 |
Signed a Green Agreement with Saitama Prefecture |
| 2003-12 |
Simultaneous certification of integrated management systems (ISO 14001, ISO 9001, and OHSAS 18001) — an industry first |
| 2003-12 |
Obtained development permission under Article 29 of the City Planning Act |
| 2004-01 |
Development of Kabokuen, the main garden, and the 2nd, 3rd, 4th, and 5th Kabokuen |
| 2004-03 |
Installation of a rainwater storage tank on the premises |
| 2004-04 |
Development of the 6th, 7th, and 8th Kabokuen |
| 2004-07 |
Completion of the chip plant building and obtaining development permission under Article 35 of the City Planning Act |
| 2004-08 |
Obtained conformity certification for development permission under Article 29 of the City Planning Act |
| 2005-01 |
Completion of the volume reduction and sorting/classification plant building |
| 2005-05 |
Completion of the development of greenbelt and environmental control facilities from the main Kabokuen to the 22nd Kabokuen |
| 2005-06 |
Installation of bag filters at the volume reduction and sorting plant |
| 2005-07 |
Completion of the valuable materials plant and product stockyard buildings |
| 2005-11 |
Installation of a bag filter at the waste concrete plant |
| 2005-11 |
Completion of the waste concrete plant building |
| 2006-10 |
Completion of the headquarters building and administration building |
| 2006-11 |
Obtained special permission under the proviso of Article 51 of the Building Standards Act |
| 2006-11 |
Obtained permission for change in the scope of industrial waste disposal business |
| 2006-11 |
Introduction of electric heavy machinery at the volume reduction plant |
| 2007-05 |
Completion of facilities compliant with Articles 14 and 15 of the Waste Management and Public Cleansing Act |
| 2007-10 |
Obtained ISMS ISO/IEC 27001 certification for information security management |
| 2008 |
All-Weather Recycling Plant Renovated. |
| 2008-01 |
Completion of the full all-weather plant renewal |
| 2008-09 |
Completion of the visitor walkway and gallery building |
| 2010-01 |
Landscaping of Kabokuen Fruit Park |
| 2011-03 |
Approval of the Formulated Management Innovation Plan (Saitama Prefecture) |
| 2011-04 |
First domestic credit certification in Japan for electric heavy machinery: Certified under the Domestic Credit System Emission Reduction Project (Ministry of Economy, Trade and Industry; Ministry of the Environment; Ministry of Agriculture, Forestry and Fisheries) |
| 2011-06 |
Applied heat-reflective coating on the building roof |
| 2011-07 |
Implementation of a new core system |
| 2011-10 |
Obtained ISO 50001 certification for energy management |
| 2011-10 |
Commencement of operation of five integrated management systems (ISO 14001, ISO 9001, OASAS18001, ISO 27001, ISO 50001) |
| 2012-01 |
Completion of Kabokuen and the wild bird waterside pond |
| 2012-02 |
Installation of the Hanaki-en Walking Path “Midori no Kairō” (Green Corridor) |
| 2012-02 |
Launch of the Oak Woods Environmental School |
| 2012-07 |
Obtained “AAA” certification under the JHEP Certification System (Japan Habitat Evaluation and Certification Program) from the Ecosystem Conservation Society–Japan (ECS–Japan). |
| 2012-08 |
Opened the “Santome Konjyaku Kataribe-kan” (Santome Past and Present Storytelling Hall). |
| 2013-01 |
Integrated compressors and improved efficiency of dust collection systems |
| 2013-03 |
Certified as a “”Place for Nature-Based Experiences”. |
| 2013-09 |
Noriko Ishizaka appointed as President. |
| 2013-09 |
Launch of the “Santome Konjakumura Group”. |
| 2013-11 |
Obtained ISO 22301 Business Continuity Management certification. |
| 2013-11 |
Started operation of six integrated management systems (ISO 14001, ISO 9001, OASAS18001, ISO 27001, ISO 50001, ISO 22301). |
| 2014-11 |
Obtained ISO 29990 certification for learning services. |
| 2015 |
Topping-Out Ceremony Held for the “Oak Woods Community Plaza" |
| 2015-03 |
Started recruitment of new graduate students. |
| 2015-04 |
Groundbreaking Ceremony for the Oak Woods Community Plaza at Santome Konjakumura. |
| 2015-05 |
Launched the 'Ishizaka-gijuku,' public lecture series for general audiences. |
| 2015-05 |
Obtained the nation’s first Construction Technology Certification in the waste management industry for 'Embankment Material NS-10' made by recycling soil contained in construction-related mixed waste. |
| 2015-11 |
Opened the 'Oak Woods Community Plaza' at Santome Konjakumura. |
| 2016 |
Scenes from the “Living with SATOYAMA EXPO" |
| 2016 |
Ishizaka Organic Farm |
| 2016-04 |
Held the 'Living with SATOYAMA EXPO.' |
| 2016-08 |
Establishment of Ishizaka Organic Farm Inc. |
| 2017 |
Agreement Signed to Enhance and Expand the “Place for Nature-Based Experiences" |
| 2017-04 |
Ishizaka Inc. renewed its corporate slogan and logo. |
| 2017-07 |
Renewed 'AAA' certification under the JHEP Certification System (Ecosystem Conservation Society–Japan). |
| 2017-07 |
Celebrated the 50th anniversary of establishment. |
| 2017-07 |
Erected a bust of the founder, Yoshio Ishizaka. |
| 2017-08 |
Simultaneously obtained the international agricultural production process certification 'GLOBALG.A.P.' and the 'ASIA GAP' certification awarded to farms committed to food safety and environmental conservation. |
| 2017-10 |
As the secretariat of the 'Place for Nature-Based Experiences' Research Organization, Ishizaka Inc. signed an agreement with the Ministry of the Environment to enhance and expand Places for Nature-Based Experiences. |
| 2018 |
Large-Scale Lead-Acid Battery |
| 2018-02 |
Introduced large-scale lead-acid batteries and a geothermal heat utilization air-conditioning system. |
| 2018-06 |
Signed a comprehensive cooperation agreement with Miyoshi Town to promote regional revitalization and community development, establishing a five-year partnership. |
| 2018-12 |
Enshrinement of the 'Shiawase Shrine'. |
| 2019-04 |
Obtained 'Organic JAS' certification for agricultural products and processed foods from Ishizaka Organic Farm. |
| 2019-07 |
Held the 1st Founding Festival 'Shiawase Shrine Night Festival'. |
| 2019-11 |
Held the 1st Green Blue Education Forum (GBEF) Contest. |
| 2021 |
Sorting Robot 'IT-PiRo'. |
| 2021-04 |
Full-scale operation started for the manual sorting robot "IT-PiRo." |
| 2021-06 |
Joined the "RE Action: 100% Renewable Energy Declaration." |
| 2021-08 |
First Japanese company to sign The Climate Pledge. |
| 2021-12 |
Achieved 100% renewable energy usage. |
| 2022-04 |
55th Anniversary / Corporate Logo Renewed |
| 2022-07 |
Joined the “30by30 Alliance for Biodiversity” |
| 2022-07 |
Renewed “AAA” rating under the JHEP Certification System for the second time—the first in Japan (Japan Ecosystem Conservation Society) |
| 2023 |
Completion of the Fully Circular Bio-Toilet 'TOILETOWA'. |
| 2023-02 |
Grand opening of Naya Saryo MEGURU |
| 2023-03 |
Registered and certified as a “Saitama Prefecture SDGs Partner” |
| 2023-04 |
Renewal of the comprehensive cooperation agreement with Miyoshi Town to promote regional revitalization and community development. |
| 2023-06 |
Signed a Memorandum of Understanding (MoU) with Lahti Region, Finland, for cooperation toward a circular economy |
| 2023-09 |
Constructed the fully circular bio-toilet “TOILETOWA” |
| 2023-10 |
Renewed the symbol mark of Santome Konjakumura |
| 2023-10 |
Participation in the Digital Agency's “Model Use Case Demonstration Experiment for Realizing Trusted Web” |
| 2023-12 |
Participation in the “Circular Partners” Partnership to Promote Industry-Government-Academia Collaboration for Realizing a Circular Economy (Ministry of Economy, Trade and Industry) |
| 2024-03 |
Santome Konjakumura certified as a "Nature Symbiosis Site" by the Ministry of the Environment of Japan |
| 2024-04 |
Signed an MOU with Idea Studio Nepal for the construction of a waste recycling plant. |
| 2024-07 |
Updated Renewable Energy 100 Declaration RE Action |
| 2025 |
Establishment of a Photovoltaic Recycling Plant (Iruma City, Saitama Prefecture). |
| 2025-03 |
Grand opening of Naya Yojo Meguru |
| 2025-06 |
Established and started accepting materials at a photovoltaic recycling facility in Iruma City, Saitama Prefecture. |
| 2025-09 |
“Santome Konjakumura” has been certified as a”Nationally Certified Sustainably Managed Natural Sites” under the “Regional Biodiversity Promotion Act |
| 2026-02 |
Renewed the "Comprehensive Cooperation Agreement" with Miyoshi Town, and concluded a new “Memorandum of Understanding on the Handling of Disaster Waste in the Event of Large-Scale Earthquakes or Other Major Disasters" |
| 2026-03 |
Signed an agreement with Toyota Boshoku to promote the use of construction waste plastic in automotive parts. |
| 2026-04 |
Obtained Designation No. 0001 as an "Advanced Recycling Business" under the "Act on the Advancement of Recycling Businesses, etc., for the Promotion of Resource Circulation" |
| 2026-05 |
Signed a "Comprehensive Cooperation Agreement" with Waseda University, School of Human Sciences |
