Technology Hotbed · Climate & Environment
Air Purification
Data as of 11 Oct 2026Methodology
Momentum: - Steady
Across fully-published filing years - the current year is still publishing and is left out of the signal.
99
Patents
28
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
UMEANDUS TECHNOLOGIES INDIA PRIVATE LIMITED
Gurugram · Robotics & Industrial Automation
ACTADEX TECHNOLOGIES (OPC) PRIVATE LIMITED
Guntur · Health & Life Sciences
AHABHOUNA MECHATRONICS PRIVATE LIMITED
Visakhapatnam · 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
HIGHEST COMMON FACTOR PRIVATE LIMITED
Bengaluru Urban · Agri & Food
INSTASHIELD INDIA PRIVATE LIMITED
Hyderabad · Health & Life Sciences
IONUVA INNOVATIONS LLP
North West Delhi · Health & Life Sciences
Log 9 Materials Scientific Private Limited
Saharanpur · Energy
A sample of matched deep-tech startups - Startup counts are name-matched candidates, not ownership records - see methodology. Methodology
Deep-tech basis: site-backed (own website fetched and read), IP-backed (patent or design filed in its own name), web-backed (described elsewhere on the open web), registry only (registry description alone). How this is decided
Where it clusters
Matched startups by state
| State | Startups mapped |
|---|---|
| Haryana | 3 |
| Tamil Nadu | 3 |
| Uttar Pradesh | 3 |
| Karnataka | 2 |
| Telangana | 2 |
| Maharashtra | 1 |
| Delhi | 1 |
| Kerala | 1 |
| Bihar | 1 |
| Rajasthan | 1 |
See air purification on the India map → Where its patents are filed, state by state and city by city, with companies, institutes and individual inventors apart.
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 | 2 | 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
- LOG 9 MATERIALS SCIENTIFICIN · 1
- NEOINVENTRONIXIN · 1
- PERSAPIEN INNOVATIONSIN · 1
- STREE SANMANIN · 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.