G11B 5/73935
Characterised by roughness or surface features
Official title: {characterised by roughness or surface features, e.g. by added particles}
G11B5/73935 (Characterised by roughness or surface features) appears on 125 US grants and 27 published applications in this corpus.
Search patents in G11B- Granted patents
- 125
- Published applications
- 27
- Assignees
- 30
- Inventors
- 218
- Latest grant
- 6 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 12 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 7 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 4 |
| 2003 | 4 | 3 |
| 2004 | 4 | 1 |
| 2005 | 1 | 5 |
| 2006 | 3 | 0 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 3 |
| 2012 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device6 Aug 2024US 12,057,152 B2FUJIFILM Corporation
- Magnetic recording medium8 Nov 2022US 11,495,258 B2Sony Group Corporation
- Magnetic recording medium having reinforced substrate11 Oct 2022US 11,468,910 B2Sony Corporation
- Biaxially oriented thermoplastic resin film30 Mar 2021US 10,960,597 B2Toray Industries, Inc.
- Magnetic recording medium with controlled surface characteristics3 Mar 2020US 10,580,447 B2Sony Corporation
- Magnetic recording medium30 Jun 2022US 2022/0208227 A1Sony Group Corporation
- Magnetic recording medium7 Apr 2022US 2022/0108723 A1Sony Corporation
- Magnetic recording medium, magnetic tape cartridge, and magnetic recording and reproducing device9 Sep 2021US 2021/0280213 A1FUJIFILM Corporation
- Biaxially oriented thermoplastic resin film30 May 2019US 2019/0160728 A1Toray Industries, Inc.
- Magnetic recording medium17 May 2018US 2018/0137887 A1Sony Corporation
Most cited
By later US patents
- Polyester film and magnetic recording medium therefrom77US 4,590,119 AToray Industries, Inc. · 1986
- Biaxially oriented film of polyethylene-2,6-naphthalate45US 5,051,292 ATeijin Limited · 1991
- Biaxially oriented laminated film43US 5,069,962 AToray Industries, Inc. · 1991
- Biaxially oriented laminated film42US 5,389,422 AToray Industries, Inc. · 1995
- Polyester film for magnetic recording media40US 4,670,319 ATeijin Limited · 1987