ATONARP INC.

ATONARP INC. is a Tokyo-headquartered technology company founded in October 2009 by Sridhar Marthi Prakash, who serves as President and CEO. The company operates at the intersection of digital technology and molecular science, with a mission to 'unravel knowledge at the molecular level and accelerate human progress.' Its core technology is a next-generation mass spectrometry platform that enables real-time, in-situ molecular profiling for industrial process control. ATONARP's products are designed for time-critical decision-making in semiconductor manufacturing, pharmaceutical production, and life sciences research. The flagship ASTON Impact is an in-situ mass spectrometer for semiconductor process control, while ASTON Lyo addresses freeze-drying (lyophilization) in pharmaceutical manufacturing by mitigating silicone oil contamination. The company also offers the AMS 1000 mass spectrometer and the LyoSentinel system. ATONARP has raised multiple venture funding rounds (Series A through Series E) and is backed by investors including Celsta Capital, Analog Devices Inc., and Furukawa Electric. It has wholly-owned subsidiaries in the United States (Atonarp US Inc., Silicon Valley) and India (Atonarp Micro Systems India Pvt Ltd., Bangalore). As of December 2025, the company reported capital of 148 million yen and 20 employees including overseas subsidiaries. The company targets beachhead markets in semiconductor gas analysis and pharmaceutical manufacturing, with expansion into EV battery manufacturing. Its compact, robust, and high-speed mass spectrometry solutions aim to improve throughput, efficiency, and waste reduction in industrial processes.

ATONARP INC. was established in October 2009 in Tokyo, Japan, by Sridhar Marthi Prakash, who continues to lead the company as President and CEO. The company was founded with a vision to operate at the intersection of new digital technologies and molecular science, aiming to improve quality of life and deepen understanding of the world through molecular-level knowledge. In 2012, ATONARP released its first product, the Ion Mobility Sensor (FAIMS), marking its entry into molecular analysis. The company then raised Series A funding in 2014, followed by the establishment of wholly-owned subsidiaries in India (Atonarp Micro Systems India Pvt Ltd.) and the United States (Atonarp US Inc. in Silicon Valley) in 2015. That same year, it launched the AMS 1000 mass spectrometer. ATONARP continued to advance its technology platform, introducing the LyoSentinel in 2018 and securing Series B (2016) and Series C (2018-2019) funding rounds. In 2021, the company announced ASTON Impact for semiconductor manufacturing and completed a Series D funding round to support the release of the ASTON series products. In 2024, ATONARP raised Series E and Series 1 funding. As of December 2025, ATONARP reported capital of 148 million yen and 20 employees including overseas subsidiaries. Its major shareholders include Celsta Capital (USA), NVC1 Limited Liability Partnership, Innovative Venture Investment Limited Partnership, Value Co-Creation Venture Limited Liability Partnership, JP Investment 1 Investment Limited Partnership, SBI AI&Blockchain Investment Limited Partnership, Analog Devices Inc. (USA), and Furukawa Electric Co., Ltd. The company maintains its headquarters in Tokyo, with offices in Pleasanton, California, and Bangalore, India.

• 2024

  Series E and Series 1 funding

• 2021

  Announced ASTON Impact for semiconductor manufacturing

• 2021

  Series D funding (ASTON series product release)

• 2019

  Series C funding - 2

• 2018

  Introduced LyoSentinel

• 2018

  Series C funding - 1

• 2016

  Series B funding

• 2015

  Established Atonarp Micro Systems India Pvt Ltd. and Atonarp US Inc.

• 2015

  Launched AMS 1000 mass spectrometer

• 2014

  Series A funding

• 2012

  Released Ion Mobility Sensor (FAIMS)

• 2009

  ATONARP INC. founded in Tokyo

Deep-tech provider of in-situ mass spectrometry for semiconductor and pharmaceutical process control, enabling real-time molecular insights.

• ASTON Impact

  In-situ mass spectrometer for semiconductor process control, enabling molecular-level process control and dramatic efficiency improvements.

• ASTON Lyo

  Mass spectrometer for freeze-drying process monitoring, featuring pulse injection to mitigate silicone oil contamination and extend operation.

• AMS 1000

  Mass spectrometer launched in 2015.

• LyoSentinel

  Introduced in 2018 for pharmaceutical freeze-drying monitoring.

• Ion Mobility Sensor (FAIMS)

  Released in 2012, the company's first product.

1. 1ATONARP | 分子レベルで世界を解きあかすatonarp.com
2. 2会社案内 | ATONARPatonarp.com
3. 3製品情報 | ATONARPatonarp.com
4. 4質量分析装置 ASTON Lyo | ATONARPatonarp.com
5. 5ATONARP INC. - Wikidatawikidata.org
6. 6Atonarp announces innovative new metrology platform Aston, aimed at increasing yield, throughput, and efficiency in semiconductor manufacturing processesprnewswire.com