Real time correction of optical window thermal gradients
US-10151635-B1 · Dec 11, 2018 · US
Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target
Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target · 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 | F41G7/2253 |
| Official title | {Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target} |
| Display label | Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target |
| Total patents | 234 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 16 |
| 2017 | 18 |
| 2018 | 22 |
| 2019 | 25 |
| 2020 | 27 |
| 2021 | 27 |
| 2022 | 20 |
| 2023 | 20 |
| 2024 | 21 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Target designator
US-2018321016-A1 · Nov 8, 2018 · US
Risley prism line-of-sight control for strapdown missile
US-10077971-B1 · Sep 18, 2018 · US
Compact wideband radio frequency antenna systems and associated methods
US-9997831-B2 · Jun 12, 2018 · US
Methods for extended-range, enhanced-precision gun-fired rounds using g-hardened flow control systems
US-9939240-B1 · Apr 10, 2018 · US
Unmanned aerial vehicle angular reorientation
US-2018093755-A1 · Apr 5, 2018 · US
Target-designation detection used to shutter camera images for locating target
US-9857145-B1 · Jan 2, 2018 · US
Target-designation detection used to shutter camera images for locating target
US-2017370677-A1 · Dec 28, 2017 · US
Compact Wideband Radio Frequency Antenna Systems and Associated Methods
US-2017301991-A1 · Oct 19, 2017 · US
Unmanned aerial vehicle angular reorientation
US-9776709-B2 · Oct 3, 2017 · US
Wideband antenna structure with optics reflector as ground plane and associated methods
US-9719924-B1 · Aug 1, 2017 · US
Method for reducing the low-frequency component of the measurement noise of a photosensitive imager and applications of same
US-2017214865-A1 · Jul 27, 2017 · US
Wideband antenna structure with optics reflector as ground plane and associated methods
US-2017214134-A1 · Jul 27, 2017 · US
Missile seekers
US-9696117-B2 · Jul 4, 2017 · US
Navigation System with Monocentric Lens and Curved Focal Plane Sensor
US-2017184401-A1 · Jun 29, 2017 · US
Protective dome for a dual mode electromagnetic detection system
US-2017170554-A1 · Jun 15, 2017 · US
Methods for extended-range, enhanced-precision gun-fired rounds using g-hardened flow control systems
US-9658040-B1 · May 23, 2017 · US
Unmanned aircraft turn and approach system
US-2017139416-A1 · May 18, 2017 · US
Polarization Filtering for Window Self-Emission Due to Aero-Thermal Heating
US-2017115160-A1 · Apr 27, 2017 · US
Optical waveguide coude path for gimbaled systems having an optical coupling element
US-9632166-B2 · Apr 25, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F41G7/2253?
- CPC F41G7/2253 is the Cooperative Patent Classification code for “Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target.”
- How many patents are filed under CPC F41G7/2253 (Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target)?
- Our database includes 234 publications tagged with this CPC code.
- Is patent activity under CPC F41G7/2253 growing?
- Publication counts under this code: 21 in 2024 vs 15 in 2025 (latest complete years).