Table 7 Outputs of journals, patents, technology, and business case per projects on varying TRLs
From: A study on a political system for the advance in green hydrogen technology: a South Korea case study
|  | TRL 1–3 | TRL 4–6 | TRL 7–9 | NI* |
|---|---|---|---|---|
Journals | 2467 (75%) | 360 (11%) | 200 (6.1%) | 231 (7.0%) |
Patents | 591 (60%) | 162 (16%) | 204 (20%) | 33 (3.5%) |
Technology | 4 (5.5%) | 6 (8.3%) | 57 (79%) | 5 (6.9%) |
Business | 30 (76%) | 4 (10%) | 5 (12%) | 0 (0%) |