G11B 20/02
Analogue recording or reproducing
G11B20/02 (Analogue recording or reproducing) appears on 221 US grants and 52 published applications in this corpus.
Search patents in G11B- Granted patents
- 221
- Published applications
- 52
- Assignees
- 99
- Inventors
- 394
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 13 | 0 |
| 1985 | 19 | 0 |
| 1986 | 5 | 0 |
| 1987 | 12 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 3 |
| 2003 | 1 | 4 |
| 2004 | 5 | 2 |
| 2005 | 2 | 4 |
| 2006 | 3 | 2 |
| 2007 | 3 | 4 |
| 2008 | 5 | 1 |
| 2009 | 3 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 6 | 7 |
| 2015 | 4 | 2 |
| 2016 | 4 | 5 |
| 2017 | 3 | 3 |
| 2018 | 2 | 3 |
| 2019 | 2 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 2 |
| 2025 | 3 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hopscotch soundtrack recording and playback system and method for a motion picture film22 Jul 2025US 12,367,907 B1
- Measurement device, measurement method, recording medium, and phonograph record28 Jan 2025US 12,211,518 B2Panasonic Intellectual Property Management Co., Ltd.
- Codeword interleaving over magnetic media surfaces14 Jan 2025US 12,198,724 B1Marvell Asia Pte Ltd
- Multiple-actuator HDD assembly utilizing multiple-preamp architecture with single point termination24 Sep 2024US 12,100,422 B2Western Digital Technologies, Inc.
- Data storage device with notch filter calibration based on multi-rate excitation and error rejection27 Feb 2024US 11,915,731 B1Western Digital Technologies, Inc.
- Hybrid Analog Digital Audio Format1 Oct 2026US 2026/0301769 A1Ceramic Data Solutions GmbH
- Multiple-actuator hdd assembly utilizing multiple-preamp architecture with single point termination27 Jun 2024US 2024/0212713 A1Western Digital Technologies, Inc.
- Data storage device with notch filter calibration based on multi-rate excitation and error rejection29 Feb 2024US 2024/0071415 A1Western Digital Technologies, Inc.
- Measurement device, measurement method, recording medium, and phonograph record6 Apr 2023US 2023/0109304 A1Panasonic Intellectual Property Management Co., Ltd.
- Pulse testing method and apparatus, testing device, and storage medium29 Jul 2021US 2021/0231525 A1Zte Corporation
Most cited
By later US patents
- Information retrieval system and apparatus251US 4,536,866 AVideonics of Hawaii, Inc. · 1985
- Noise reduction circuitry for audio signals141US 4,462,048 ARCA Corporation · 1984
- System for carrying transparent digital data within an audio signal140US 5,612,943 A1997
- Process for reducing the pre-echoes or post-echoes affecting audio recordings96US 5,717,768 AFrance Telecom · 1998
- Digital data (multi-bit) storage with discrete analog memory cells84US 6,467,062 B12002