Technology Hotbed · Climate & Environment
air purification
Momentum: ▼ Cooling
82
Patents
0
Startups matched
23
Foreign filers
Startup counts are name-matched candidates, not ownership records — see methodology. Methodology
Where it clusters
Matched startups by state
| State | Startups mapped |
|---|---|
| Bihar | 1 |
| Haryana | 1 |
| Karnataka | 1 |
| Maharashtra | 1 |
| Rajasthan | 1 |
| Tamil Nadu | 1 |
| Telangana | 1 |
| Uttar Pradesh | 1 |
Filing momentum
2022 onward
| Year | Filings | Foreign |
|---|---|---|
| 2022 | 18 | 5 |
| 2023 | 23 | 5 |
| 2024 | 23 | 8 |
| 2025 | 15 | 5 |
| 2026 | 1 | 1 |
Who's filing
Indian companies lead — institutes & foreign kept separate
Educational institutes (3) — high filing volume, separate from company R&D
Top inventors in this technology
The most prolific inventors filing in this technology, each linking to their full patent history.