Drum unit and image forming apparatus
US-2018335745-A1 · Nov 22, 2018 · US
Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence)
Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H05B3/40 |
| Official title | Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) |
| Display label | Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) |
| Total patents | 285 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 11 |
| 2017 | 24 |
| 2018 | 17 |
| 2019 | 26 |
| 2020 | 36 |
| 2021 | 28 |
| 2022 | 30 |
| 2023 | 30 |
| 2024 | 32 |
| 2025 | 35 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rod-shaped lamp and heat treatment apparatus
US-2018308726-A1 · Oct 25, 2018 · US
Electric heating device
US-2018310365-A1 · Oct 25, 2018 · US
Temperature controlled electrospinning substrate
US-2018302953-A1 · Oct 18, 2018 · US
Aerosol delivery device with a reservoir housing and a vaporizer assembly
US-10085485-B2 · Oct 2, 2018 · US
Steering device and method for producing the same
US-2018273078-A1 · Sep 27, 2018 · US
Vehicle radiation heater
US-2018257456-A1 · Sep 13, 2018 · US
Refrigeration heating assembly and method of operation
US-2018252462-A1 · Sep 6, 2018 · US
Heating block half-shell and heating block for avoiding static air bubbles
US-2018252435-A1 · Sep 6, 2018 · US
Radiator module and use of the radiator module
US-2018242399-A1 · Aug 23, 2018 · US
Lens barrel and camera module comprising same
US-2018176431-A1 · Jun 21, 2018 · US
Sealed cartridge for an aerosol delivery device and related assembly method
US-9955726-B2 · May 1, 2018 · US
Electronic cigarette and electronic hookah
US-9877517-B2 · Jan 30, 2018 · US
Aerosol delivery device with a reservoir housing and a vaporizer assembly
US-2018007962-A1 · Jan 11, 2018 · US
Electronic cigarette and its sucking rod
US-9861138-B2 · Jan 9, 2018 · US
Heater element as sensor for temperature control in transient systems
US-2017359857-A1 · Dec 14, 2017 · US
Aerosol generating system having means for determining depletion of a liquid substrate
US-9814263-B2 · Nov 14, 2017 · US
Electronic cigarette and electronic cigarette device thereof
US-9814267-B2 · Nov 14, 2017 · US
Article having fluororesin joint, and method for producing such article
US-9797536-B2 · Oct 24, 2017 · US
Cartridge-type inline heater and system for controlling working fluid temperature using the same
US-9784471-B2 · Oct 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H05B3/40?
- CPC H05B3/40 is the Cooperative Patent Classification code for “Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence).”
- How many patents are filed under CPC H05B3/40 (Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence))?
- Our database includes 285 publications tagged with this CPC code.
- Is patent activity under CPC H05B3/40 growing?
- Publication counts under this code: 32 in 2024 vs 35 in 2025 (latest complete years).