Image forming apparatus
US-12362689-B2 · Jul 15, 2025 · US
Special adaptations for controlling two or more stepping motors
Special adaptations for controlling two or more stepping motors · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P8/40 |
| Official title | Special adaptations for controlling two or more stepping motors |
| Display label | Special adaptations for controlling two or more stepping motors |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 10 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Half-step motor driver
US-12267037-B2 · Apr 1, 2025 · US
Image forming apparatus
US-2024079976-A1 · Mar 7, 2024 · US
Lens control device and lens control method
US-11906894-B2 · Feb 20, 2024 · US
Image forming apparatus having reduced power consumption
US-11843341-B2 · Dec 12, 2023 · US
Absolute position sensing system for stepper motor mechanism
US-11774075-B2 · Oct 3, 2023 · US
Electronic timepiece, movement, and motor control circuit
US-11693368-B2 · Jul 4, 2023 · US
Half-Step Motor Driver
US-2023198432-A1 · Jun 22, 2023 · US
Air pressure control device
US-11543838-B2 · Jan 3, 2023 · US
Radio frequency processing apparatus and method
US-11489507-B2 · Nov 1, 2022 · US
Weighing apparatus that reduces power consumption during opening and closing of a hopper gate
US-11460338-B2 · Oct 4, 2022 · US
Electronic timepiece, movement, and motor control circuit
US-11429067-B2 · Aug 30, 2022 · US
Absolute position sensing system for stepper motor mechanism
US-2022221139-A1 · Jul 14, 2022 · US
Image forming apparatus
US-2022173674-A1 · Jun 2, 2022 · US
Operating a particle beam apparatus and/or a light microscope
US-11347043-B2 · May 31, 2022 · US
Method for operating a pressure control device, and pressure control device for carrying out the method
US-11342866-B2 · May 24, 2022 · US
Lens control device and lens control method
US-2022137487-A1 · May 5, 2022 · US
Electronic timepiece, movement, and motor control circuit for a timepiece
US-11294334-B2 · Apr 5, 2022 · US
Air pressure control device
US-2022050483-A1 · Feb 17, 2022 · US
Driving device, image forming apparatus, and control program
US-11201573-B2 · Dec 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P8/40?
- CPC H02P8/40 is the Cooperative Patent Classification code for “Special adaptations for controlling two or more stepping motors.”
- How many patents are filed under CPC H02P8/40 (Special adaptations for controlling two or more stepping motors)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC H02P8/40 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).