Subcutaneous transcranial focused ultrasound

Apparatuses, systems, and methods are disclosed for subcutaneous transcranial functional ultrasound technique. An example apparatus includes a substrate and a device configured to be disposed under skin. The device includes one or more transducers disposed on the substrate and provides a pressure wave that propagates a body part under the skin. The pressure wave has a fundamental frequency within a range approximately from 10 Hz to 10 GHz.

The abstract as published by the patent office, from US20250135238A1. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Ultrasound

• Stimulation

  Stimulation

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B2018/00839, A61N2007/0026, A61N2007/0047, A61N7/00, B06B1/0622). The claims define what a patent protects, and they are not read here.

Interface and electrodes

Everything downstream works with what the contacts pick up. Their number, size and distance from the neurons set the ceiling on the signal. The problem behind it: more contacts, closer to neurons, that still record after years in tissue that reacts to them.

Stimulation

Restoring sensation, sight or movement needs information going in, and a therapy that adapts needs to sense and stimulate at once. The problem behind it: evoking a precise, stable effect without damaging tissue or electrodes, and without blinding the recording.

Why the layer matters to the field, not a judgement of this filing. A patent family shows that protection was sought. It does not show that the technology was built, is used in a product, or works in people. The whole stack

One invention, published 3 times in 3 offices. Each publication opens in Espacenet.

• United StatesUS20250135238A11 May 2025
• International (PCT)a route to several countries, not a countryWO2025090731A11 May 2025
• European Patent Officea route to several countries, not a countryEP4798301A12 Sep 2026

1. 27 Oct 2023First filingEarliest priority, at United States. The family is counted in this year.
2. 23 Oct 2024ApplicationFiled at United States.
3. 24 Oct 2024ApplicationsFiled at International (PCT), European Patent Office.
4. 1 May 2025First publicationUS20250135238A1, United States.

Dates as the offices published them. Records of lapses, withdrawals and changes of owner have not been read for this family, and whether a patent is in force today is not assessed.

Organisation

Blackrock Neurotech · 14 families identified

Technology

Ultrasound

• Bibliographic data, family members and office records: European Patent Office, Open Patent Services (the DOCDB and INPADOC databases), read 7 Oct 2026.
• The record itself, with its claims and description: US20250135238A1 in Espacenet
• Counted as a BCI patent family: classified A61B5/37 (analysis and use of electroencephalograms); filed by Blackrock Microsystems, Inc., an organisation already in the graph; a hardware layer of the stack, filed by a company that builds interfaces; cites a family already accepted. How families are found and judged