G11B 5/726
Two or more protective coatings
Official title: {Two or more protective coatings (inorganic carbon protective coating G11B5/727)}
G11B5/726 (Two or more protective coatings) appears on 332 US grants and 183 published applications in this corpus.
Search patents in G11B- Granted patents
- 332
- Published applications
- 183
- Assignees
- 96
- Inventors
- 714
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 11 | 0 |
| 1988 | 8 | 0 |
| 1989 | 15 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 10 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 17 | 0 |
| 1997 | 15 | 0 |
| 1998 | 14 | 0 |
| 1999 | 16 | 0 |
| 2000 | 7 | 0 |
| 2001 | 15 | 2 |
| 2002 | 9 | 12 |
| 2003 | 15 | 12 |
| 2004 | 12 | 16 |
| 2005 | 13 | 11 |
| 2006 | 4 | 4 |
| 2007 | 6 | 5 |
| 2008 | 5 | 11 |
| 2009 | 5 | 7 |
| 2010 | 6 | 8 |
| 2011 | 6 | 11 |
| 2012 | 3 | 4 |
| 2013 | 6 | 14 |
| 2014 | 6 | 8 |
| 2015 | 11 | 10 |
| 2016 | 7 | 3 |
| 2017 | 7 | 7 |
| 2018 | 4 | 2 |
| 2019 | 3 | 5 |
| 2020 | 2 | 11 |
| 2021 | 11 | 8 |
| 2022 | 8 | 4 |
| 2023 | 6 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Head and media overcoats for heat assisted magnetic recording26 Aug 2025US 12,400,680 B1Western Digital Technologies, Inc.
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium26 Sep 2023US 11,767,483 B2Resonac Corporation
- Magnetic recording medium, method of manufacturing magnetic recording medium and magnetic storage device13 Jun 2023US 11,676,632 B2Resonac Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium30 May 2023US 11,661,408 B2Showa Denko K. K.
- Magnetic recording medium18 Apr 2023US 11,631,430 B2Sony Group Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium2 Jul 2026US 2026/0185010 A1Resonac Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium18 Jun 2026US 2026/0167775 A1Resonac Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium11 Jun 2026US 2026/0159774 A1Resonac Corporation
- Thermo-mechanical-optical bonding of lubricants to carbon overcoat of magnetic recording media28 May 2026US 2026/0148750 A1Western Digital Technologies, Inc.
- Modified repeat unit for enhanced interaction energy and thermal stability of high temperature lubricants for magnetic media7 May 2026US 2026/0125611 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Silicon/carbon protection of metallic magnetic structures125US 4,647,494 AInternational Business Machines Corporation · 1987
- Method of manufacturing a magnetic recording medium124US 5,540,957 AMatsushita Electric Industrial Co., Ltd. · 1996
- Head slider with projections arranged on rails thereof96US 5,841,608 AFujitsu Limited · 1998
- Buffered nitrogenated carbon overcoat for data recording disks and method for manufacturing the same89US 6,136,403 AWestern Digital Corporation · 2000
- Magnetic recording medium and a method of manufacturing the same78US 6,365,012 B1Nippon Sheet Glass Co., Ltd. · 2002