The copyright to a work whose authorship is attributed to a corporation or other organization subsists for a period of 70 years after the work is made public (or for a period of 70 years after the creation of the work, if the work is not made public within 70 years of its creation).
The provisions of the preceding paragraph do not apply if the individual who is the author of a work whose authorship is attributed to a corporation or other corporate body, makes the work public and uses that individual's true name or the pseudonym by which that individual is commonly known to indicate the name of the author, within the period referred to in the preceding paragraph.
With respect to the duration of copyright for a work whose authorship has been attributed to a corporation or other corporate body pursuant to the provisions of Article 15, paragraph (2), even if such a work does not fall under the category of works provided for in paragraph (1), it is deemed to be attributed to the relevant corporate body, and the provisions of paragraph (1) apply.
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(Authorship of a Work Made in the Course of Duty)
For a work of computer programming that an employee of a corporation, etc. makes at the initiative of the corporation, etc. in the course of duty, the author is the corporation, etc.…
法人等の発意に基づきその法人等の業務に従事する者が職務上作成するプログラムの著作物の著作者は、その作成の時における契約、勤務規則その他に別段の定めがない限り、その法人等とする。
Open this provision(The Term of Protection for Works Attributed to an Organization)
The copyright to a work whose authorship is attributed to a corporation or other organization subsists for a period of 70 years after the work is made public…
法人その他の団体が著作の名義を有する著作物の著作権は、その著作物の公表後七十年（その著作物がその創作後七十年以内に公表されなかつたときは、その創作後七十年）を経過するまでの間、存続する。
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「著作物」
A creative expression of thoughts or feelings falling within the literary, academic, artistic or musical domain — a work in the narrow sense, as distinct from 著作物等 (works, performances, phonograms, broadcasts and cablecasts), which the Ministry's English also calls 'work'.
Defined inArticle 2, paragraph (1), item (i)· applies throughout the law
author
「著作者」
The person who creates a work (著作物).
Defined inArticle 2, paragraph (1), item (ii)· applies throughout the law
corporation
「法人」
A corporation, including an association or foundation without legal personality that has a designated representative or manager.
Defined inArticle 2, paragraph (6)· applies throughout the law
pseudonym
「変名」
A pen name, art name, abbreviated name or any other name used in place of a person's true name (実名).
Short name set inArticle 14, paragraph (1)
true name
「実名」
A person's own name, or a corporation's or other body's name (氏名又は名称).
Short name set inArticle 14, paragraph (1)
copyright
「著作権」
The economic rights of an author set out in Articles 21 to 28: the rights of reproduction, stage and musical performance, on-screen presentation, public transmission, recitation, exhibition, distribution, transfer of ownership, rental, translation and adaptation, and the original author's rights over the use of derivative works.
Short name set inArticle 17, paragraph (1)