G11B 23/005
Flexible discs
Official title: {flexible discs (G11B23/0035 takes precedence)}
G11B23/005 (Flexible discs) appears on 20 US grants and 4 published applications in this corpus.
Search patents in G11B- Granted patents
- 20
- Published applications
- 4
- Assignees
- 10
- Inventors
- 36
- Latest grant
- 10 Dec 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 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 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Disk laminate, disk cartridge, disk loading/unloading mechanism, disk conveying device, disk conveying mechanism, and thin disk driving system10 Dec 2013US 8,607,259 B2Chotaro Engineering, Co.
- Disk drive system employing effective disk surface stabilization mechanism14 Dec 2010US 7,852,723 B2Ricoh Company, Ltd.
- Disk drive system employing effective disk surface stabilization mechanism19 Jun 2007US 7,233,554 B2Ricoh Company, Ltd.
- Electromagnetic inductive drive and method of making the same27 May 2003US 6,570,834 B1Sony Corporation
- Recording disk having improved centering hub and magnetic yoke arrangement24 Sep 1991US 5,051,858 AMinnesota Mining and Manufacturing Company
- Disk laminate, disk cartridge, disk loading/unloading mechanism, disk conveying device, disk conveying mechanism, and thin disk driving system17 Nov 2011US 2011/0283299 A1Chotaro Engineering, Co.
- Disk drive system employing effective disk surface stabilization mechanism13 Dec 2007US 2007/0286045 A1Ricoh Company, Ltd.
- Disk drive system employing effective disk surface stabilization mechanism15 Mar 2007US 2007/0058500 A1
- Disk drive system employing effective disk surface stabilization mechanism12 Dec 2002US 2002/0186636 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Arrangement for pressing flexible discs and a pressing process using this arrangement20US 4,238,179 AThomson-CSF · 1980
- Stable stretched surface recording medium19US 4,623,570 AMinnesota Mining and Manufacturing Company · 1986
- Stretched surface recording disk substrate13US 4,631,609 AMinnesota Mining and Manufacturing Company · 1986
- Recording medium annealing process12US 4,729,805 AMinnesota Mining and Manufacturing Company · 1988
- Handling apparatus for magnetic recording disks12US 4,826,019 AThree Phoenix Company · 1989