Annulus shaped luminaire
US-9222627-B2 · Dec 29, 2015 · US
Mechanical Engineering
Mechanical Engineering · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F21K9/52 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 151 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 70 |
| 2016 | 66 |
| 2017 | 8 |
| 2018 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pull-out faucet
US-2015354186-A1 · Dec 10, 2015 · US
Backlight module and liquid crystal display device
US-2015355400-A1 · Dec 10, 2015 · US
Pull-out faucet
US-2015354185-A1 · Dec 10, 2015 · US
Display device
US-2015354759-A1 · Dec 10, 2015 · US
Backlight module, display device and method for eliminating hotspot effect
US-9207378-B2 · Dec 8, 2015 · US
Light diffusing fiber lighting device
US-2015346411-A1 · Dec 3, 2015 · US
Illumination apparatus
US-9194541-B2 · Nov 24, 2015 · US
Light guide element and lamp for controlling light beam angle
US-9182529-B2 · Nov 10, 2015 · US
Light guide and a light device incorporating the same
US-9182087-B2 · Nov 10, 2015 · US
Flat lighting device
US-2015316213-A1 · Nov 5, 2015 · US
Lighted electrical device and receptacle
US-9175815-B2 · Nov 3, 2015 · US
Electrical connectors for solid state light
US-9175813-B2 · Nov 3, 2015 · US
Method for manufacturing electronic products, related arrangement and product
US-2015308639-A1 · Oct 29, 2015 · US
Light projector and sensor
US-9169979-B2 · Oct 27, 2015 · US
Lighting strip
US-9157582-B2 · Oct 13, 2015 · US
Low profile luminaire with light guide and associated systems and methods
US-9157581-B2 · Oct 13, 2015 · US
Lighting unit
US-2015267895-A1 · Sep 24, 2015 · US
Light source arrangement having a plurality of semiconductor laser light sources
US-2015267878-A1 · Sep 24, 2015 · US
LED-based lamp including shaped light guide
US-9133988-B2 · Sep 15, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21K9/52?
- CPC F21K9/52 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F21K9/52 (Mechanical Engineering)?
- Our database includes 151 publications tagged with this CPC code.
- Is patent activity under CPC F21K9/52 growing?
- Publication counts under this code: 8 in 2017 vs 7 in 2018 (latest complete years).