G11B 5/73929
Comprising naphthalene ring compounds
Official title: {comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates}
G11B5/73929 (Comprising naphthalene ring compounds) appears on 144 US grants and 90 published applications in this corpus.
Search patents in G11B- Granted patents
- 144
- Published applications
- 90
- Assignees
- 31
- Inventors
- 266
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 9 | 0 |
| 1995 | 17 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 10 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 3 |
| 2002 | 4 | 7 |
| 2003 | 5 | 8 |
| 2004 | 10 | 5 |
| 2005 | 5 | 14 |
| 2006 | 3 | 10 |
| 2007 | 1 | 12 |
| 2008 | 2 | 2 |
| 2009 | 3 | 1 |
| 2010 | 2 | 2 |
| 2011 | 2 | 3 |
| 2012 | 1 | 1 |
| 2013 | 3 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 5 |
| 2021 | 3 | 9 |
| 2022 | 9 | 3 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic recording medium having controlled change in average width and cartridge14 Jan 2025US 12,198,743 B2Sony Group Corporation
- Magnetic tape cartridge group and magnetic recording and reproducing device30 Apr 2024US 11,972,784 B2FUJIFILM Corporation
- Polyester composition, polyester film, and magnetic recording medium29 Aug 2023US 11,739,182 B2Toyobo Co., Ltd.
- Magnetic recording medium8 Aug 2023US 11,721,360 B2Sony Corporation
- Fabrication methods for magnetic recording tape having resilient substrate8 Nov 2022US 11,495,259 B2International Business Machines Corporation
- Magnetic recording medium13 Aug 2026US 2026/0237402 A1Sony Group Corporation
- Magnetic tape and tape cartridge16 Apr 2026US 2026/0105930 A1Sony Group Corporation
- Magnetic recording medium and cartridge16 May 2024US 2024/0161778 A1Sony Group Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic recording and reproducing apparatus9 Feb 2023US 2023/0038353 A1FUJIFILM Corporation
- Magnetic tape cartridge group and magnetic recording and reproducing device29 Dec 2022US 2022/0415350 A1FUJIFILM Corporation
Most cited
By later US patents
- Magnetic recording tape126US 6,228,461 B1Fuji Photo Film Co., Ltd. · 2001
- Biaxially oriented polyester film, process for producing the same, and magnetic recording medium77US 6,835,461 B1Toray Industries, Inc. · 2004
- Biaxially oriented film of polyethylene-2,6-naphthalate45US 5,051,292 ATeijin Limited · 1991
- Magnetic disc38US 4,666,769 AHitachi Maxell, Ltd. · 1987
- Magnetic recording medium and process for producing the same37US 6,106,895 AFuji Photo Film Co., Ltd. · 2000