G11B 5/7257
Perfluoropolyether lubricant
Official title: {Perfluoropolyether lubricant}
G11B5/7257 (Perfluoropolyether lubricant) appears on 380 US grants and 281 published applications in this corpus.
Search patents in G11B- Granted patents
- 380
- Published applications
- 281
- Assignees
- 85
- Inventors
- 581
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 13 | 0 |
| 1997 | 8 | 0 |
| 1998 | 15 | 0 |
| 1999 | 12 | 0 |
| 2000 | 18 | 0 |
| 2001 | 13 | 1 |
| 2002 | 10 | 11 |
| 2003 | 14 | 12 |
| 2004 | 12 | 17 |
| 2005 | 18 | 15 |
| 2006 | 6 | 7 |
| 2007 | 8 | 10 |
| 2008 | 6 | 6 |
| 2009 | 5 | 11 |
| 2010 | 5 | 14 |
| 2011 | 11 | 10 |
| 2012 | 3 | 17 |
| 2013 | 6 | 10 |
| 2014 | 15 | 15 |
| 2015 | 13 | 11 |
| 2016 | 9 | 8 |
| 2017 | 6 | 9 |
| 2018 | 11 | 7 |
| 2019 | 4 | 6 |
| 2020 | 7 | 8 |
| 2021 | 3 | 8 |
| 2022 | 15 | 17 |
| 2023 | 12 | 9 |
| 2024 | 13 | 9 |
| 2025 | 7 | 20 |
| 2026 | 9 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High thermal stability lubricants6 Oct 2026US 12,753,360 B2Western Digital Technologies, Inc.
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium8 Sep 2026US 12,729,347 B2Resonac Corporation
- Fluorine-containing ether compound, method for producing same, lubricant for magnetic recording media, and magnetic recording media23 Jun 2026US 12,662,572 B2Resonac Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium9 Jun 2026US 12,649,825 B2Resonac Corporation
- Fluorinated media lubricants with reduced hydrocarbon fraction for data storage devices9 Jun 2026US 12,649,888 B2Western Digital Technologies, Inc.
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium1 Oct 2026US 2026/0297452 A1Resonac Corporation
- Lubricant for magnetic recording media3 Sep 2026US 2026/0258319 A1Resonac Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium27 Aug 2026US 2026/0250591 A1Resonac Corporation
- Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium27 Aug 2026US 2026/0250595 A1Resonac Corporation
- Magnetic recording and reproduction device and adjustment method of the same16 Jul 2026US 2026/0204282 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Lubricant for magnetic disk, process for producing the same, and magnetic disk80US 8,178,480 B2WD Media (Singapore) Pte. Ltd. · 2012
- Magnetic recording medium and a method of manufacturing the same78US 6,365,012 B1Nippon Sheet Glass Co., Ltd. · 2002
- Magnetic recording disk and process for manufacture thereof75US 7,252,897 B2Hoya Corporation · 2007
- Magnetic recording medium having a lubricant film coated on optimum conditions and method of evaluating the lubricant film73US 6,099,981 AHoya Corporation · 2000
- Magnetic disk73US 7,833,641 B2WD Media (Singapore) Pte. Ltd. · 2010