G11B 13/04
Magnetically or by magnetisation and optically or by radiation, for changing or
Official title: magnetically {or by magnetisation} and optically {or by radiation, for changing or sensing optical properties}
G11B13/04 (Magnetically or by magnetisation and optically or by radiation, for changing or) appears on 321 US grants and 147 published applications in this corpus.
Search patents in G11B- Granted patents
- 321
- Published applications
- 147
- Assignees
- 78
- Inventors
- 502
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 18 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 17 | 0 |
| 2001 | 20 | 9 |
| 2002 | 18 | 19 |
| 2003 | 16 | 14 |
| 2004 | 16 | 11 |
| 2005 | 11 | 11 |
| 2006 | 10 | 4 |
| 2007 | 4 | 1 |
| 2008 | 7 | 0 |
| 2009 | 2 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 4 |
| 2012 | 2 | 4 |
| 2013 | 16 | 26 |
| 2014 | 16 | 17 |
| 2015 | 21 | 8 |
| 2016 | 11 | 4 |
| 2017 | 4 | 1 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 4 | 1 |
| 2021 | 3 | 1 |
| 2022 | 2 | 2 |
| 2023 | 5 | 2 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Data storage device with embedded mode hop predictor patterns15 Apr 2025US 12,277,957 B1Western Digital Technologies, Inc.
- Data storage device with mapping and mitigation of laser mode hop effects in heat-assisted magnetic recording (HAMR)26 Nov 2024US 12,154,606 B2Western Digital Technologies, Inc.
- Dual-pulse excitation method for ultra-fast, super-resolution all-optical magnetic recording17 Oct 2023US 11,790,943 B2Jinan University
- Optical I/O Transmission17 Oct 2023US 11,791,907 B2Calsys Holdings, LLC
- Actuators for an elevator drive16 May 2023US 11,651,784 B2Seagate Technology LLC
- Frequency data transmission and encryption system11 Jul 2024US 2024/0235696 A9
- Data storage device with mapping and mitigation of laser mode hop effects in heat-assisted magnetic recording (hamr)30 May 2024US 2024/0177735 A1Western Digital Technologies, Inc.
- Frequency data transmission and encryption system25 Apr 2024US 2024/0137131 A1
- Optical I/O Transmission9 Feb 2023US 2023/0045773 A9Calsys Holdings, LLC
- Analog optical link for a moveable actuator in a data storage system5 Jan 2023US 2023/0005504 A1Seagate Technology LLC
Most cited
By later US patents
- Read/write head with shifted waveguide218US 6,016,290 ARead-Rite Corporation · 2000
- Laser mounting for a thermally assisted GMR head203US 6,404,706 B1Read-Rite Corporation · 2002
- Method for providing an electronic lapping guide corresponding to a near-field transducer of an energy assisted magnetic recording transducer168US 8,375,565 B2Western Digital (Fremont), LLC · 2013
- Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk167US 5,761,301 AMatsushita Electric Industrial Co., Ltd. · 1998
- Optical disk, optical recorder, optical reproducer, crytocommunication system and program license system125US 6,081,785 AMatsushita Electric Industrial Co., Ltd. · 2000