Technology Hotbed · Energy
Battery Separators
Data as of 12 Oct 2026Methodology
Momentum: - Steady
Across fully-published filing years - the current year is still publishing and is left out of the signal.
149
Patents
0
Startups matched
24
Foreign filers
Startup counts are name-matched candidates, not ownership records - see methodology. Methodology
Where it clusters
Matched startups by state
| State | Startups mapped |
|---|---|
| Karnataka | 1 |
See battery separators 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 | 22 | 20 |
| 2023 | 40 | 37 |
| 2024 | 34 | 29 |
| 2025 | 28 | 28 |
| 2026partial | 14 | 9 |
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
- OLA ELECTRIC MOBILITYIN · 2
- GODREJ BOYCE MFGIN · 1
- DR V SUMALATHAIN · 1
- PERMIONICS GLOBAL TECHNOLOGIESIN · 1
- TCG CENTRES FOR RESEARCH AND EDUCATION IN SCIENCE AND TECHNOLOGYIN · 1
Educational institutes (4) - 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.
Briefings on this technology
tech brief
India's Energy Sector Looks 97% China-Free. Its Batteries Are 75% Chinese.
Energy is India's least China-dependent sector at 2.8%, until you look at lithium-ion cells, which run 75.2% Chinese. It's the one sector where patents, startups and capital point the right way.
tech brief
India's Battery Separator Innovation: Tackling Heat, Adhesion, and Dendrites
Indian inventors are re-engineering the separator layer with ceramic coatings and crosslinking polymers to make batteries safer and easier to manufacture.