Robot maker · registered
ACSL
Proprietary autonomous flight-control and autopilot stack originating from Kenzo Nonami's Chiba University laboratory, enabling beyond-visual-line-of-sight (Level 3/Level 4) autonomous flights. ACSL was the first company in Japan to obtain a Level 4 Class 1 UAS type certificate (March 2023). SOTEN pairs autonomy with ISO 15408-based security: encrypted communications, drone-controller pairing, hijack resistance and domestic cloud data storage, positioning it as the NDAA-compliant alternative to DJI. LTE-connected operation supports remote autonomous BVLOS missions.
Company overview
Identity and operating footprint
Robot models
Specifications remain vendor-claimed
PF4
- Long-range multi-use drone flown in dual-drone logistics and patrol operations
Two PF4 units flown simultaneously for Japan Post logistics and patrol missions in Toyooka City, a first in Japan for identical-model simultaneous operations
Claim source
SOTEN
- 25-minute maximum flight time at 1,720 g operating weight
Maximum flight time with standard camera at 8 m/s airspeed; operating weight with standard camera and battery
Claim source - 4 km transmission range with swappable 4K/IR/multispectral/zoom cameras
Video transmission range without obstructions or radio interference; interchangeable camera system
Claim source - ISO 15408-based security with encrypted communications and hijack resistance
Security design preventing data leakage and hijacking, with drone-controller pairing and optional encrypted storage in Japanese cloud
Claim source
Deployment log
Announced and cited only
Funding history
Publicly announced rounds
Post-IPO equity (3rd
Athos Asia Event Driven Master Fund
Round sourceIPO
Investors undisclosed
Round sourceCompany timeline
Milestones and announcements
Source ledger
9 unique public sources