Muti Channel Array Element Using Hybrid Graphene Electrode Brain Inserted

The present invention relates to a multichannel array element using graphene composite electrodes for brain implantation, which comprises: the graphene composite electrodes which touch the surface of the cerebral cortex to measure signals generated in the brain or transmit external stimuli to the brain; a connection part which consists of gold electrodes electrically connected to each of the graphene composite electrodes and transmitting an electrical signal; and a communication pad which is connected to each of the gold electrodes and connects the same to a circuit board for measurement and stimulation outside the brain. Each of the graphene composite electrodes includes a first carbon structure, a metal layer, and a second carbon structure. The present invention provides a multichannel array element using graphene composite electrodes for brain implantation, which can minimize the opening of the skull when inserted into the brain.

The abstract as published by the patent office, from KR20220134404A. It describes the invention; it is not a statement of what is protected.

• Interface and electrodes

  Electrodes and arrays · Materials and coatings

• Stimulation

  Stimulation · Closed loop

What the filing appears to be about, read by published rules from its title, abstract and classification codes (A61B5/263, A61B5/293, A61B5/37, A61B5/372, A61B5/4094). 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 2 times in 1 office. Each publication opens in Espacenet.

• South KoreaKR20220134404A5 Oct 2022KR102568398B121 Aug 2023 · grant

1. 26 Mar 2021First filingEarliest priority, at South Korea. The family is counted in this year.
2. 7 Jun 2021ApplicationFiled at South Korea.
3. 5 Oct 2022First publicationKR20220134404A, South Korea.
4. 5 Jan 2023Office recordSouth Korea, on KR20220134404A: notification of reason for refusal.
5. 21 Aug 2023Grant publishedKR102568398B1, South Korea.
6. 27 Mar 2024Office recordInternational (PCT), on WO2022203118A1: ep: pct application non-entry in european phase.

Dates as the offices published them. Office records are in the offices' own words and are a selection: refusals, lapses and withdrawals, and records that name an owner. Each concerns one member of the family, not the family as a whole, and another member in the same office may stand. Whether a patent is in force today is not assessed.

Organisation

Gbrain · 13 families identified

• 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: KR20220134404A in Espacenet
• Counted as a BCI patent family: title or abstract names the field; classified A61B5/293 (invasive electrodes for brain recording); filed by 주식회사 지브레인, an organisation already in the graph. How families are found and judged