Light-emitting gas recovery method and light-emitting gas recovery apparatus
US-12249500-B1 · Mar 11, 2025 · US
Recovery of material from discharge tubes or lamps (H01J9/50 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01J9/52 |
| Official title | Recovery of material from discharge tubes or lamps (H01J9/50 takes precedence) |
| Display label | Recovery of material from discharge tubes or lamps (H01J9/50 takes precedence) |
| Total patents | 8 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2018 | 1 |
| 2021 | 1 |
| 2025 | 2 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12249500-B1 · Mar 11, 2025 · US
US-2025079147-A1 · Mar 6, 2025 · US
US-10892132-B2 · Jan 12, 2021 · US
US-2018169804-A1 · Jun 21, 2018 · US
US-2016035559-A1 · Feb 4, 2016 · US
US-9102998-B2 · Aug 11, 2015 · US
US-2015099416-A1 · Apr 9, 2015 · US
US-2015050199-A1 · Feb 19, 2015 · US