| Type of organisation | Germany | France | United Kingdom | Netherlands | Italy | Spain | Total |
| Private company | 9 (23%) | 2 (10%) | 7 (32%) | 6 (33%) | 4 (15%) | 14 (70%) | 42 (28.4%) |
| Public research body | 5 (13%) | 14 (67%) | 3 (14%) | 8 (44%) | 7 (26%) | 0 | 37 (25.0%) |
| University | 10 (26%) | 1 (5%) | 10 (45%) | 1 (6%) | 8 (30%) | 5 (25%) | 35 (23.6%) |
| Technology centre | 12 (31%) | 0 | 2 (9%) | 0 | 1 (4%) | 1 (5%) | 16 (10.8%) |
| Association | 1 (3%) | 4 (19%) | 0 | 2 (11%) | 2 (7%) | 0 (0%) | 9 (6.1%) |
| Public authority | 1 (3%) | 0 | 0 | 1 (6%) | 3 (11%) | 0 (0%) | 5 (3.4%) |
| Foundation | 1 (3%) | 0 | 0 | 0 | 2 (7%) | 0 (0%) | 3 (2.7%) |
| Total | 39 | 21 | 22 | 18 | 27 | 20 | 147 (100.0%) |