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Companies / Knock on the Door

Knock on the Door

Tokyo, Japan

The company provides services including an epilepsy seizure recording app and online medical services for patients with epilepsy and their families.

Healthcare & Biotech

Knock on the Door, based in Tokyo, Japan, has 2 investors on file, among them Capital Medica Ventures and Keio Innovation Initiative. Its site was last checked 6 Nov 2026: site answers.

knockonthedoor.jp

Investors

2 investors on file
InvestorEvidenceType
Capital Medica VenturesPortfolio pageVenture capital
Keio Innovation InitiativePortfolio pageVenture capital

More from Capital Medica Ventures

24 companies on its checked portfolio

Its portfolio leans to Healthcare & Biotech (78%), AI & Machine Learning (7%), Education (7%).

HICKYHicky develops innovative medical devices to treat central sleep apnea…A-SEEDSThe company develops and commercializes non-viral gene-modified immune…AMIAMI develops and researches medical devices and software, including a …Adriakaim Inc.Adriakaim Inc. develops innovative medical devices for heart diseases.CaTeCaTe develops solutions that combine medical expertise and technology …

See Capital Medica Ventures' full profile · Who invests alongside it

More from Keio Innovation Initiative

40 companies on its checked portfolio

Its portfolio leans to Healthcare & Biotech (36%), AI & Machine Learning (18%), Industrial & Manufacturing (13%).

AdipoSeedsAdipoSeeds develops a technology to cultivate blood platelets from fat…CureAppCureApp develops medical treatment apps based on medical evidence to s…HeartseedHeartseed Inc. develops and delivers cardiac regenerative medicine to …Kringle PharmaKringle Pharma is a late-stage regenerative medicine bioventure that c…LIFESCAPESThe company uses brain science and AI to support rehabilitation for pa…

See Keio Innovation Initiative's full profile · Who invests alongside it

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

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VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/knockonthedoor.jp/investors

# also
GET /v1/companies/knockonthedoor.jp
GET /v1/companies/knockonthedoor.jp/news
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