G11B 5/7021
Containing a polyurethane or a polyisocyanate
Official title: {containing a polyurethane or a polyisocyanate}
G11B5/7021 (Containing a polyurethane or a polyisocyanate) appears on 433 US grants and 130 published applications in this corpus.
Search patents in G11B- Granted patents
- 433
- Published applications
- 130
- Assignees
- 67
- Inventors
- 585
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 12 | 0 |
| 1983 | 20 | 0 |
| 1984 | 11 | 0 |
| 1985 | 10 | 0 |
| 1986 | 21 | 0 |
| 1987 | 21 | 0 |
| 1988 | 12 | 0 |
| 1989 | 13 | 0 |
| 1990 | 10 | 0 |
| 1991 | 19 | 0 |
| 1992 | 34 | 0 |
| 1993 | 16 | 0 |
| 1994 | 9 | 0 |
| 1995 | 20 | 0 |
| 1996 | 19 | 0 |
| 1997 | 12 | 0 |
| 1998 | 13 | 0 |
| 1999 | 17 | 0 |
| 2000 | 17 | 0 |
| 2001 | 7 | 3 |
| 2002 | 5 | 4 |
| 2003 | 5 | 12 |
| 2004 | 10 | 16 |
| 2005 | 5 | 10 |
| 2006 | 6 | 7 |
| 2007 | 2 | 3 |
| 2008 | 3 | 2 |
| 2009 | 2 | 5 |
| 2010 | 3 | 4 |
| 2011 | 0 | 5 |
| 2012 | 1 | 0 |
| 2013 | 3 | 1 |
| 2014 | 3 | 1 |
| 2015 | 1 | 4 |
| 2016 | 0 | 0 |
| 2017 | 2 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 4 | 25 |
| 2021 | 8 | 10 |
| 2022 | 27 | 6 |
| 2023 | 6 | 2 |
| 2024 | 1 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnetic tape with characterized surface recesses, magnetic tape cartridge, and magnetic tape apparatus29 Jul 2025US 12,374,359 B2FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus29 Jul 2025US 12,374,360 B2FUJIFILM Corporation
- Magnetic recording medium27 Aug 2024US 12,073,861 B2Sony Group Corporation
- Magnetic recording medium29 Aug 2023US 11,741,991 B2Sony Corporation
- Hexagonal strontium ferrite powder, magnetic recording medium, and magnetic recording and reproducing apparatus18 Jul 2023US 11,705,156 B2FUJIFILM Corporation
- Magnetic recording medium13 Aug 2026US 2026/0237402 A1Sony Group Corporation
- Magnetic recording medium6 Aug 2026US 2026/0229252 A1Sony Group Corporation
- Magnetic recording medium11 Jun 2026US 2026/0162677 A1Sony Group Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus11 Apr 2024US 2024/0119963 A1FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus28 Mar 2024US 2024/0105223 A1FUJIFILM Corporation
Most cited
By later US patents
- Polyurethanes and polyurethane/polyureas crosslinked using 2-glyceryl acrylate or 2-glyceryl methacrylate114US 4,786,657 AMinnesota Mining and Manufacturing Company · 1988
- Sulfonated hydroxy-functional polyurethane binder for magnetic recording media66US 5,071,578 AMinnesota Mining and Manufacturing Company · 1991
- Aqueous coating composition and method60US 4,263,188 AVerbatim Corporation · 1981
- Carboxylic-acid functional polyurethane polymers and their use in magnetic recording media58US 5,661,207 AMinnesota Mining and Manufacturing Company · 1997
- Magnetic recording medium57US 4,152,485 AToyo Boseki Kabushiki Kaisha · 1979