• All firms, organizations and institutions whose primary activity is the market production of goods or services (other than higher education) for sale to the general public at an economically significant price. • The private non-profit institutions mainly serving them.• The core of this sector is made up of private enterprises. This also includes public enterprises.
OECD (2002), Frascati Manual: Proposed Standard Practice for Surveys on Research and Experimental Development, §163.
To break down R&D expenditure by sector of performance and source of funds. Also to break down R&D personnel by sector of employment