Magnetic head including a main pole and a write shield to provide improved write characteristics without compromising the function of the write shield
US-9489969-B1 · Nov 8, 2016 · US
Gap features {(G11B5/1871, G11B5/1875, G11B5/265, G11B5/29, G11B5/488 and subgroups, G11B5/4907 and subgroups, G11B5/4969 and subgroups take precedence)}
Gap features {(G11B5/1871, G11B5/1875, G11B5/265, G11B5/29, G11B5/488 and subgroups, G11B5/4907 and subgroups, G11B5/4969 and subgroups take precedence)} · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G11B5/23 |
| Official title | Gap features {(G11B5/1871, G11B5/1875, G11B5/265, G11B5/29, G11B5/488 and subgroups, G11B5/4907 and subgroups, G11B5/4969 and subgroups take precedence)} |
| Display label | Gap features {(G11B5/1871, G11B5/1875, G11B5/265, G11B5/29, G11B5/488 and subgroups, G11B5/4907 and subgroups, G11B5/4969 and subgroups take precedence)} |
| Total patents | 293 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 35 |
| 2016 | 25 |
| 2017 | 20 |
| 2018 | 24 |
| 2019 | 28 |
| 2020 | 33 |
| 2021 | 27 |
| 2022 | 35 |
| 2023 | 31 |
| 2024 | 18 |
| 2025 | 15 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High Moment Side Shield Design for Area Density Improvement of Perpendicular Magnetic Recording (PMR) Writer
US-2016307586-A1 · Oct 20, 2016 · US
Magnetic head for perpendicular magnetic recording including a write shield
US-2016284366-A1 · Sep 29, 2016 · US
Asymmetric MAMR head with self-aligned spin torque oscillator along flare edge for shingled magnetic recording
US-9406316-B2 · Aug 2, 2016 · US
High moment side shield design for area density improvement of perpendicular magnetic recording (PMR) writer
US-9361912-B1 · Jun 7, 2016 · US
Magnetic recording head and disk device with the same
US-9361911-B1 · Jun 7, 2016 · US
Dual purpose tape write transducer
US-9355656-B1 · May 31, 2016 · US
Microwave assisted magnetic recording head and magnetic recording device having the same
US-9355659-B2 · May 31, 2016 · US
Magnetic writer having an asymmetric gap and shields
US-9349393-B2 · May 24, 2016 · US
Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps
US-2016133281-A1 · May 12, 2016 · US
Extended spin torque oscillator
US-9336797-B2 · May 10, 2016 · US
Microwave assisted magnetic head
US-9330691-B1 · May 3, 2016 · US
High density timing based servo format for use with tilted transducer arrays
US-9324350-B2 · Apr 26, 2016 · US
Write gap structure for a magnetic recording head
US-9318131-B2 · Apr 19, 2016 · US
Symmetrical STO for oscillation with both polarity bias
US-9311934-B1 · Apr 12, 2016 · US
Determining oscillation characteristic for high-frequency assisted magnetic recording device
US-9305584-B2 · Apr 5, 2016 · US
Perpendicular magnetic recording (PMR) writer with minimized internal flux shunting
US-9299367-B1 · Mar 29, 2016 · US
Main pole layer with at least two sacrificial layers and a gap layer
US-2016078887-A1 · Mar 17, 2016 · US
Magnetic writer having a dual side gap
US-9286919-B1 · Mar 15, 2016 · US
High frequency data writer field generator device
US-9286916-B1 · Mar 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G11B5/23?
- CPC G11B5/23 is the Cooperative Patent Classification code for “Gap features {(G11B5/1871, G11B5/1875, G11B5/265, G11B5/29, G11B5/488 and subgroups, G11B5/4907 and subgroups, G11B5/4969 and subgroups take precedence)}.”
- How many patents are filed under CPC G11B5/23 (Gap features {(G11B5/1871, G11B5/1875, G11B5/265, G11B5/29, G11B5/488 and subgroups, G11B5/4907 and subgroups, G11B5/4969 and subgroups take precedence)})?
- Our database includes 293 publications tagged with this CPC code.
- Is patent activity under CPC G11B5/23 growing?
- Publication counts under this code: 18 in 2024 vs 15 in 2025 (latest complete years).