G11B 15/61
On drum
Official title: on drum, e.g. drum containing rotating heads {(G11B15/66 takes precedence)}
G11B15/61 (On drum) appears on 487 US grants and 77 published applications in this corpus.
Search patents in G11B- Granted patents
- 487
- Published applications
- 77
- Assignees
- 106
- Inventors
- 720
- Latest grant
- 23 Jan 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 23 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 17 | 0 |
| 1988 | 10 | 0 |
| 1989 | 19 | 0 |
| 1990 | 20 | 0 |
| 1991 | 24 | 0 |
| 1992 | 18 | 0 |
| 1993 | 28 | 0 |
| 1994 | 37 | 0 |
| 1995 | 17 | 0 |
| 1996 | 27 | 0 |
| 1997 | 18 | 0 |
| 1998 | 25 | 0 |
| 1999 | 24 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 3 |
| 2002 | 11 | 15 |
| 2003 | 7 | 11 |
| 2004 | 14 | 17 |
| 2005 | 9 | 8 |
| 2006 | 7 | 4 |
| 2007 | 10 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 7 |
| 2011 | 5 | 1 |
| 2012 | 5 | 1 |
| 2013 | 1 | 0 |
| 2014 | 2 | 3 |
| 2015 | 3 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Recording tape cartridge having a reel that includes a plurality of through holes formed in a flange thereof23 Jan 2018US 9,875,768 B2FUJIFILM Corporation
- Tape guide with flanges15 Sep 2015US 9,135,943 B2Oracle International Corporation
- Grooved tape guide roller26 May 2015US 9,042,055 B2Oracle International Corporation
- Thin web optical media guiding method14 Apr 2015US 9,009,745 B2Oracle International Corporation
- Rotary head data storage and retrieval system and method21 Oct 2014US 8,869,179 B2Oracle International Corporation
- Recording tape cartridge2 Nov 2017US 2017/0316801 A1FUJIFILM Corporation
- Tape guide with flanges8 Jan 2015US 2015/0009791 A1Oracle International Corporation
- Grooved tape guide roller8 Jan 2015US 2015/0009792 A1Oracle International Corporation
- Rotary head data storage and retrieval system and method29 May 2014US 2014/0146652 A1Oracle International Corporation
- Rotary head multi-layer data storage and retrieval system and method29 May 2014US 2014/0146654 A1Oracle International Corporation
Most cited
By later US patents
- Full radius carrier to drum contact in a rotary head scanner63US 4,989,110 ADatatape Incorporated · 1991
- Error prevention in a recording and reproducing device with at least one rotating head60US 5,067,035 AKudelski SA fabrique de'enregistreurs Nagra · 1991
- Disc, tape and hybrid disc-tape memory apparatus and drive assembly40US 4,285,016 AMicrocomputer Systems Corp. · 1981
- Magnetic recording apparatus38US 4,510,538 ASony Corporation · 1985
- Magnetic recording/reproducing apparatus36US 6,449,118 B1Samsung Electronics Co., Ltd. · 2002