G11B 3/72
Groove formations
Official title: Groove formations, e.g. run-in groove, run-out groove
G11B3/72 (Groove formations) appears on 18 US grants and 7 published applications in this corpus.
Search patents in G11B- Granted patents
- 18
- Published applications
- 7
- Assignees
- 14
- Inventors
- 33
- Latest grant
- 1 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Cutter unit for cutting a phonographic record, cartridge for a cutter unit, blank for a phonographic record and method for reading information from a blank1 Oct 2024US 12,106,781 B2Phonocut Maschinen GmbH
- Method for producing a high definition analogue audio storage medium26 Oct 2021US 11,157,663 B2Rebeat Innovation GmbH
- Methods and coatings for advanced audio recording and playback21 Apr 2020US 10,629,227 B2Georgia Tech Research Corporation
- Flatbed cutter assembly and a method therefor11 Dec 2018US 10,152,990 B2Océ Holding B. V.
- Method of producing a data storage medium5 Sep 2017US 9,754,609 B2International Business Machines Corporation
- Cutter unit for cutting a phonographic record, cartridge for a cutter unit, blank for a phonographic record and method for reading information from a blank9 Nov 2023US 2023/0360669 A1Phonocut Maschinen GmbH
- Method for producing a high definition analogue audio storage medium28 Feb 2019US 2019/0065662 A1Rebeat Innovation GmbH
- Methods and Coatings for Advanced Audio Recording and Playback23 Aug 2018US 2018/0240474 A1Georgia Tech Research Corporation
- Flatbed cutter assembly and a method therefor14 Jun 2018US 2018/0166095 A1Océ Holding B. V.
- Gramophone record3 Nov 2016US 2016/0322070 A1Ulvac Taiwan Inc
Most cited
By later US patents
- Acoustic image enhancing method and apparatus57US 4,356,349 ATrod Nossel Recording Studios, Inc. · 1982
- Electron beam recording in thick materials10US 3,943,302 ARCA Corporation · 1976
- Record disk and method for producing the same with constant width groove9US 4,152,726 ASony Corporation · 1979
- Trapezoidal smooth grooves for video disc5US 3,968,326 ARCA Corporation · 1976
- Method of forming phonograph records on carton blanks3US 3,983,795 AHoerner Waldorf Corporation · 1976