Technology Hotbed · Climate & Environment
air purification
Momentum: — Steady
Across fully-published filing years — the current year is still publishing and is left out of the signal.
92
Patents
19
Startups matched
23
Foreign filers
Startup counts are name-matched candidates, not ownership records — see methodology. Methodology
Startups working on air purification
Deep-tech startups with a patent tagged this technology
CHITKARA INNOVATION INCUBATOR FOUNDATION
Chandigarh · Health & Life Sciences
ACTADEX TECHNOLOGIES (OPC) PRIVATE LIMITED
Guntur · Health & Life Sciences
ACTADEX TECHNOLOGIES (OPC) PRIVATE LIMITED.
Vinukonda · Health & Life Sciences
ALIFEROUS TECHNOLOGIES PRIVATE LIMITED
Bengaluru Urban · Energy
EGREEN QUANTA LLP
Begusarai · Quantum
ENVINOVA SMARTECH PRIVATE LIMITED
Chandigarh · Energy
GENMINDS SKILL TRAININGS AND TECHNOLOGICAL SERVICES PRIVATE LIMITED
Guntur · Health & Life Sciences
GREENVERSE PRIVATE LIMITED
Gorakhpur · Climate & Environment
INSTASHIELD INDIA PRIVATE LIMITED
Hyderabad · Health & Life Sciences
IONUVA INNOVATIONS LLP
North West Delhi · Health & Life Sciences
NEOINVENTRONIX PRIVATE LIMITED
Medchal Malkajgiri · Health & Life Sciences
NOVORBIS ITUS PRIVATE LIMITED
Indore · Climate & Environment
A sample of matched deep-tech startups — Startup counts are name-matched candidates, not ownership records — see methodology. Methodology
Where it clusters
Matched startups by state
| State | Startups mapped |
|---|---|
| Haryana | 3 |
| Uttar Pradesh | 3 |
| Karnataka | 2 |
| Telangana | 2 |
| Rajasthan | 1 |
| Tamil Nadu | 1 |
| Maharashtra | 1 |
| Delhi | 1 |
| Kerala | 1 |
| Bihar | 1 |
Filing momentum
Filings by year — recent years still publishing
| Year | Filings | Foreign |
|---|---|---|
| 2022 | 18 | 5 |
| 2023 | 23 | 5 |
| 2024 | 23 | 8 |
| 2025 | 15 | 5 |
| 2026partial | 1 | 1 |
Patents publish ~18 months after they're filed, so the current year is always incomplete. The Rising / Steady / Cooling signal ignores it and compares only fully-published years — read a dip in the latest year as data still coming in, not a decline.
Who's filing
Indian companies lead — institutes & foreign kept separate
- DR. NEELAM RATHOREIN · 1
- DR. NEHA UMESH MISHRAIN · 1
- NEOINVENTRONIX PRIVATE LIMITEDIN · 1
- STREE SANMAN PRIVATE LIMITEDIN · 1
- Techknowgreen Solutions Limited (TSL)IN · 1
- Aliferous Technologies Private LimitedIN · 1
Educational institutes (6) — ranked by grant rate (share of filings granted, sample-adjusted), not filing volume
Top inventors in this technology
The most prolific inventors filing in this technology, each linking to their full patent history.