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G11B 5/3146

Magnetic layers

Official title: {magnetic layers}

G11B5/3146 (Magnetic layers) appears on 1,241 US grants and 897 published applications in this corpus.

Search patents in G11B

Granted patents: 1,241
Published applications: 897
Assignees: 90
Inventors: 1,215
Latest grant: 6 Oct 2026

Filings by year

G11B 5/3146: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	4	0
1977	1	0
1978	1	0
1979	0	0
1980	0	0
1981	0	0
1982	0	0
1983	3	0
1984	0	0
1985	1	0
1986	0	0
1987	1	0
1988	1	0
1989	2	0
1990	2	0
1991	1	0
1992	8	0
1993	6	0
1994	3	0
1995	2	0
1996	11	0
1997	6	0
1998	22	0
1999	10	0
2000	16	0
2001	20	7
2002	16	31
2003	22	29
2004	43	33
2005	21	25
2006	30	21
2007	19	44
2008	18	46
2009	28	56
2010	33	36
2011	55	59
2012	83	59
2013	112	57
2014	93	35
2015	73	45
2016	66	25
2017	57	38
2018	40	25
2019	40	37
2020	70	35
2021	54	32
2022	36	26
2023	39	19
2024	33	39
2025	27	24
2026	12	14

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Subgroups

Granted patents

Recent patents

Hard disk drive and write heads having refilled structures at side edges of an assist device6 Oct 2026US 12,755,755 B1Headway Technologies, Inc.
Write head designs with refill materials on a back edge of an assist device for improved write head reliability and performance6 Oct 2026US 12,755,756 B1Headway Technologies, Inc.
Magnetic flux guiding device with spin torque oscillator (STO) film having negative spin polarization layers in assisted writing application8 Sep 2026US 12,731,605 B2Headway Technologies, Inc.
Magneto-resistive reader utilizing read shields to maintain reference layer magnetization25 Aug 2026US 12,718,839 B2Headway Technologies, Inc.
Perpendicular magnetic recording writer with tunable pole side bridge design11 Aug 2026US 12,706,113 B2Headway Technologies, Inc.

Most cited

By later US patents