What Tokyo Ohka makes for data centers
public · HQ Japan
Tokyo Ohka is a publicly listed company and based in Japan. It appears on 1 part of the AI data center — Photoresist — in the role of manufacturer. That part sits in Layer 1 — Compute silicon & packaging. Its shares trade on Tokyo Stock Exchange as 4186.T.
Listing
Tokyo Stock Exchange: 4186.T· 7735 JPY -1.30% · mkt cap 928.0B JPY
Snapshot 2026-10-25T10:41:17Z — nightly, not real-time.· Chart on TradingView ↗
Exposure
1 part across 1 layer
No disclosed data-center revenue share on file.
Parts, by layer
Layer 1 — Compute silicon & packaging
| Part | Role | Confidence | Competitors | Note |
|---|---|---|---|---|
| Photoresist | manufacturer | inferred | DuPont, Fujifilm, Shin-Etsu, JSR |
Where Tokyo Ohka sits in the stack
Tokyo Ohka's placements in this catalog cover 1 part, all in layer 1, compute silicon & packaging. None of them currently carries a sourced supply constraint tag. Across these parts it overlaps with other companies most often on the lines below.
What these parts are
- Photoresist — Light-sensitive photoresist chemicals used to pattern each layer of a chip during lithography.
Closest peers in this catalog
| Company | Shared parts | Including | |
|---|---|---|---|
| DuPont | 1 | Photoresist | |
| Fujifilm | 1 | Photoresist | |
| Shin-Etsu | 1 | Photoresist | |
| JSR | 1 | Photoresist |
Questions about Tokyo Ohka
- What does Tokyo Ohka make for AI data centers?
- This catalog places Tokyo Ohka on 1 part: Photoresist (manufacturer).
- Is Tokyo Ohka publicly traded?
- Yes — Tokyo Ohka is listed on Tokyo Stock Exchange under 4186.T. Prices shown on this page are a nightly snapshot, not real-time, and nothing here is investment advice.
- Where is Tokyo Ohka based?
- Japan, per the company record in this catalog.
- Who else makes photoresist for AI data centers?
- DuPont, Fujifilm, Shin-Etsu and JSR are also placed on Photoresist in this catalog.
- How well sourced are these placements?
- Every part→company placement carries a confidence tag. For Tokyo Ohka the mix is 1 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a lead from the taxonomy with no citation yet. Treat reported and inferred as leads, not facts.
Answers are generated from this catalog's own rows — see sources & method.