Oaksonic

What Oaksonic does

Oaksonic Co., Ltd. (株式会社オークソニック) is a privately-held Japanese precision manufacturer founded in April 1994 and headquartered in Hannō, Saitama Prefecture. The company designs, develops, and manufactures ultrasonic devices — primarily ultrasonic diagnostic probes (transducers) for medical equipment and ultrasonic flaw-detection probes for industrial non-destructive testing — alongside related electronic components such as ultrasonic pulsers and receivers, and automated probe inspection equipment. Its product portfolio spans specialty variants including liquid-lens variable-focus, variable-curvature, ultra-compact high-frequency, USB-compatible, and high-sensitivity probes, all designed and produced in-house at a single Saitama facility.

The company's go-to-market is direct OEM/ODM sales into two principal customer segments: medical device manufacturers (its primary segment) and industrial equipment manufacturers. Its stated differentiator is small-lot, multi-product precision manufacturing underpinned by master craftsmanship (匠の技) for work that cannot be automated, such as 0.5mm pitch connector hand-soldering and 0.3mm pitch three-dimensional hand-soldering. The business model is hardware-centric: revenue is generated by custom and catalog probe sales, electronic component sales, and contract precision craftsmanship services, with pricing not publicly disclosed.

Oaksonic operates as a micro-cap, founder-led entity under Representative Director Fujihara Mitsuhiro, with 1-10 employees and 20 million yen in registered capital. Named commercial relationships include Honda Electronics (a major ultrasonic diagnostic probe customer) and a research partnership with Tohoku University. In October 2023 the company registered as an animal medical device manufacturer, and on October 23, 2025 it signed a basic agreement for business partnership with Toko Electric Manufacturing Co., Ltd. (a MiraPro group company) to offer end-to-end ultrasonic probe development, prototyping, mass production and equipment assembly services through an integrated sales and support channel. Geography remains Kanto/domestic, with explicit future intent toward global expansion in next-generation probe development under the new partnership.

Name

Oaksonic

Legal name

株式会社オークソニック

Website

https://okusonic.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

1–10 employees

Short description

Oaksonic (株式会社オークソニック) is a Japanese precision manufacturer founded in 1994 in Hannō, Saitama, designing and producing ultrasonic diagnostic and flaw-detection probes, related electronics, and artisan precision-assembly services for medical and industrial OEM customers.

Ownership category

akta.pro rank

Product category

Ultrasonic Transducer and Probe Manufacturing

NAICS

Electromedical and Electrotherapeutic Apparatus Manufacturing (334510), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Electromedical & Electrotherapeutic Apparatus (3845), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Microphones & Acoustic MEMS (MEMS Mics/Ultrasonic Transducers) (HDAHALAH)

akta.pro secondary industries

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC), Test, Measurement & Calibration Equipment Manufacturing Services (ATE, DAQ, metrology electronics) (IMAGAGAH)

Keywords

• Ultrasonic devices
• Ultrasonic transducers
• Ultrasonic probes
• Precision manufacturing
• Non-destructive testing

Headquarters

HQ city

Hanno

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure

Revenue model

1. Ultrasonic Device Manufacturing: Development, design, manufacturing and sales of ultrasonic diagnostic device probes, ultrasonic flaw detector probes, and other ultrasonic devices
2. Electronic Equipment Manufacturing: Development, design, manufacturing and sales of electronic equipment and components
3. Precision Crafting Services: Small-lot, multi-product precision work including fine wiring, special polishing, bonding and assembly for automation-difficult tasks

Distribution channels2 records

Core offering

Oaksonic develops, designs, and manufactures ultrasonic devices for medical diagnostic and industrial non-destructive testing applications, with its core product line being ultrasonic transducers and probes (including specialized variants such as liquid-lens variable-focus, variable lens-curvature, ultra-compact high-frequency, USB-compatible, and high-sensitivity probes). The company also produces related electronic components—ultrasonic pulsers/receivers—and automatic inspection equipment for ultrasonic probes, and provides precision craftsmanship services (fine-pitch hand-soldering, 3D wiring, special processing) for tasks that cannot be automated, under OEM/ODM arrangements with Japanese enterprise customers.

Product overview

Oaksonic is a precision ultrasonic device manufacturer offering a comprehensive portfolio centered on ultrasonic transducers (probes) for medical diagnostic and industrial non-destructive testing applications. The core offering includes various specialized ultrasonic probe types (liquid lens variable focus, variable lens curvature, ultra-compact high-frequency, USB-compatible, high-sensitivity) alongside electronic components (pulsers/receivers) and automatic inspection equipment. The company also provides precision craftsmanship services for difficult manual work such as fine-pitch soldering and special processing. All products are designed, developed, and manufactured in-house at their Saitama facility.

Differentiator

Problem solved

Functional benefit

Products and services

• Ultrasonic Transducers and Probes (超音波探触子) Design, development, and manufacturing of ultrasonic transducers and probes for medical diagnostic devices and industrial ultrasonic flaw detectors, sold to medical device OEMs and industrial NDT equipment manufacturers.
• Liquid-Lens Variable-Focus Ultrasonic Probe (液体レンズ搭載フォーカス可変型超音波探触子) Ultrasonic transducer equipped with liquid lens technology enabling adjustable focal length, targeted at medical diagnostic and industrial inspection applications requiring variable focusing.
• Variable Lens-Curvature Ultrasonic Probe (レンズ曲率可変型超音波探触子) Ultrasonic transducer with variable lens curvature for adjustable beam characteristics, used in ultrasonic diagnostic and flaw detection applications.
• Ultra-Compact High-Frequency Ultrasonic Probe (超小型高周波超音波探触子) Ultra-compact high-frequency ultrasonic transducer designed for specialized applications requiring small form factor and high-frequency operation.
• USB-Compatible Ultrasonic Probe (ＵＳＢ対応型超音波プローブ) USB-compatible ultrasonic probe allowing direct computer connection and data acquisition for measurement and diagnostic use.
• High-Sensitivity Ultrasonic Probe (高感度型超音波探触子) High-sensitivity ultrasonic transducer for applications requiring enhanced signal detection capability.
• Ultrasonic Pulser/Receiver (超音波パルサー・レシーバー) Electronic component for generating and receiving ultrasonic pulses in ultrasonic measurement and inspection systems.
• Automatic Inspection Equipment for Ultrasonic Probes (超音波プローブ用自動検査装置) Automatic inspection equipment designed for quality control and testing of ultrasonic probes during manufacturing.
• Precision Craftsmanship Services (匠の技が成す精密作業) Precision craftsmanship services including 0.5mm pitch connector hand-soldering, 0.3mm pitch 3D hand-soldering, fine wiring, special polishing, bonding and assembly for automation-difficult tasks, offered to enterprises on a contract basis.
• OEM/ODM Manufacturing Services (ＯＥＭ・ＯＤＭ) OEM and ODM contract manufacturing of ultrasonic devices, electronic equipment and components, including design support, prototyping, small-lot production, and assembly for enterprise customers.

Named customers2 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Two partnerships are on record, tiered core.

• Toko Electric Manufacturing Co., Ltd. (株式会社東興電機製作所)coreStrategic or Co-development Partner · 23 October 2025Business partnership for basic agreement to integrate strengths. Combined capabilities enable end-to-end service from ultrasonic probe development/design to prototyping, mass production, and equipment assembly. Future considerations include potential business integration and global expansion in next-generation probe development.
• MiraPro Co., Ltd. (株式会社ミラプロ)coreStrategic or Co-development PartnerParent company of Toko Electric Manufacturing, providing stable production and supply system through group management foundation and comprehensive group capabilities

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Siemens Healthineers: Global medical technology incumbent with ultrasound imaging systems alongside broader imaging and diagnostics portfolio. Represents the downstream OEM environment for Oaksonic's diagnostic probe products.
• Philips (Healthcare): Major global medical imaging vendor with ultrasound systems used in hospitals worldwide. Comparable as a downstream OEM customer for ultrasonic diagnostic probes and as a benchmark for the medical ultrasound end market.
• GE HealthCare: Global medical imaging incumbent with a substantial ultrasound systems business. GE HealthCare competes in the medical ultrasound market that consumes Oaksonic's diagnostic probes, providing end-equipment context rather than direct transducer competition.
• Canon Medical Systems: Japanese-headquartered medical imaging systems vendor with diagnostic ultrasound products. Particularly relevant as a Japan-based OEM counterpart and potential customer for Oaksonic's diagnostic probes.
• Olympus Corporation: Global incumbent in medical and industrial ultrasonic equipment, including ultrasound imaging systems for healthcare and ultrasonic flaw detection equipment. Olympus competes in Oaksonic's downstream market but as part of a much broader medical/industrial portfolio.

Others

• Yokogawa Electric Corporation: Japanese industrial measurement, control, and test equipment manufacturer. Relevant as a domestic incumbent in industrial sensors, test, and measurement instrumentation, the same end-markets that consume Oaksonic's flaw detection probes.
• Hamamatsu Photonics: Japanese manufacturer of photonic and sensor components, including ultrasonic and acoustic sensing devices. Adjacent peer because of overlap in precision sensor/transducer manufacturing for medical and industrial customers, though Hamamatsu's portfolio is far broader.

Direct peers

• Toko Electric Manufacturing Co., Ltd. Japanese manufacturer with OEM/ODM capabilities in ultrasonic devices and medical equipment assembly. Oaksonic's October 2025 strategic partner and now effectively a co-provider of ultrasonic probe development and equipment assembly — directly comparable in ultrasonic and electronic equipment manufacturing.
• Honda Electronics Co., Ltd. Japanese manufacturer specializing in ultrasonic sensors, transducers, and applied ultrasonic systems. Both companies develop and manufacture ultrasonic probes in Japan for medical, industrial, and NDT applications, making them directly comparable in product category even as Honda Electronics is also a major Oaksonic customer.

Emerging players

• SONOTEC GmbH: Germany-based specialist in ultrasonic sensors and transducers for industrial NDT, medical, and scientific applications. Comparable as a focused transducer specialist competing in similar ultrasonic probe niches, though at European rather than Japanese customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Oaksonic