By Rafe Calder
A name is protected by law. Only crafts the national government has designated may be called 伝統的工芸品, dentō-teki kōgeihin, traditional craft products. The Tohoku Bureau of Economy, Trade and Industry says so on its own pages. Osaka Prefecture ties the Densan mark to that designation. Our reading: the rule is narrower than the phrase “traditional craft” suggests.
The law
The bureau, a regional office of the trade ministry, names the governing law as Japan’s Law Regarding the Promotion of Traditional Craft Product Industries, which it calls the Traditional Industries Law. It says the law came into force in 1974 and, on its English page, that 240 products had been designated. The Ministry of Economy, Trade and Industry’s notice of 27 October 2025 puts the number at 244, after Tokyo Tebori Insho, hand-carved seals, was added. Osaka Prefecture’s website, a regional government page in Japanese, gives the date as 25 May 1974 and calls the text the Act on the Promotion of Traditional Craft Industries. It says national designation is made by the Minister of Economy, Trade and Industry. The two pages name the law slightly differently, and we assume they mean the same one.
The tests
The bureau lists six requirements.
- It is a craft product, made consistently over a long period as a local industry.
- It is made for everyday use. Items valued only for artistic merit do not qualify. The bureau’s second page adds that items for ceremonies or seasonal events are included.
- The main process, the one that most affects the product’s natural appeal, is done by hand.
- The techniques are generally at least 100 years old and still in use. Improvements are allowed if the core is unchanged.
- The main raw materials are generally at least 100 years old and still in use. A similar material may replace a depleted one if the appeal is preserved.
- There are generally at least 10 enterprises or at least 30 people producing it in the region.
Osaka’s page lists five, without the “craft product” test, and adds that Osaka’s own prefectural designation, in force from 1 April 1985, has three tests and no rule on numbers of producers. The prefecture has its own mark, which it describes as appearing on crafts certified by the governor.
The mark itself
Osaka’s page describes the Densan mark, in Japanese 伝統マーク, as the mark shown on crafts designated by the minister. The ministry’s notices say a designated craft can use the name “traditional craft”, and that producers’ associations of designated crafts can receive state subsidies for training successors and building demand. We found no official page that says how the mark is applied to an individual product, who inspects it or how often, so we say nothing on those points. None of the pages we read describes the mark’s design or its wording.
What it does not say
Read the tests again. They are tests of method and history: by hand, at least 100 years, enough makers. They say nothing about who the maker is, how good one piece is, or which workshop made it. The bureau says only products the government has designated may carry the name. How the mark appears on a given product is something the pages do not settle, and we make no claim about any product.
Dates in order
- 25 May 1974: the law comes into force, according to Osaka Prefecture.
- 1974: the law comes into force, according to the Tohoku bureau.
- 1 April 1985: Osaka’s prefectural designation takes effect, according to Osaka Prefecture.
- 27 October 2025: Tokyo Tebori Insho designated, taking the total to 244, according to the Ministry of Economy, Trade and Industry.
Side by side
Count the requirements. The bureau gives six, with “craft product” first. Osaka gives five and has no “craft product” test. Count the crafts: the bureau’s English page says 240, and the ministry’s 2025 notice says 244. Our reading: the sources draw the same fence in slightly different places, and the total changes whenever the ministry designates a new craft. That is our inference.
What kind of sources these are
A regional office of the trade ministry; the ministry’s own press notices; and a prefectural government page, read through a summarising tool from Japanese. We read no page of the DENSAN Association itself, and we found no source that describes how an individual product is inspected.
Questions a reader would ask
Does the mark certify quality? None of the pages say so; they describe method. Is every Japanese handmade object covered? No, only designated crafts. How many crafts are covered? 244, according to the ministry’s October 2025 notice.
What we left out
Names of living craftspeople, prices, and the list of crafts by prefecture, which the bureau gives for Tohoku only.
Quick answers
What law created the Densan system? The Tohoku Bureau of Economy, Trade and Industry says Japan’s Traditional Industries Law came into force in 1974. Osaka Prefecture dates it to 25 May 1974.
How many crafts are designated? The ministry’s notice of 27 October 2025 puts the number at 244. The Tohoku bureau’s English page says 240.
Must the main process be done by hand? Yes, according to the bureau: the process that most affects the product’s natural appeal must be manual, though secondary processes are allowed.
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