G11B 5/70663
Preparation processes specially adapted therefor
Official title: {Preparation processes specially adapted therefor, e.g. using stabilising agents (G11B5/70668 and G11B5/70673 take precedence)}
G11B5/70663 (Preparation processes specially adapted therefor) appears on 30 US grants and 2 published applications in this corpus.
Search patents in G11B- Granted patents
- 30
- Published applications
- 2
- Assignees
- 17
- Inventors
- 78
- Latest grant
- 27 Jul 2010
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 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 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Ferromagnetic powder, and coating material and magnetic recording medium using same27 Jul 2010US 7,763,352 B2Dowa Electronics Materials Co., Ltd.
- Single-step simple and economical process for the preparation of nanosized acicular magnetic iron oxide particles of maghemite phase8 Aug 2006US 7,087,210 B2Council of Scientific and Industrial Research
- Production method of goethite18 Aug 1992US 5,139,767 AMitsui Toatsu Chemicals, Inc.
- Process for producing magnetic iron oxide particles for magnetic recording20 Aug 1991US 5,041,307 AIshihara Sangyo Kaisha, Ltd.
- Preparation of acicular .alpha.-Fe.sub.2 O.sub.33 Apr 1990US 4,913,890 ABASF SE
- Ferromagnetic powder, and coating material and magnetic recording medium using same15 Mar 2007US 2007/0059557 A1Dowa Electronics Materials Co., Ltd.
- Single-step simple and economical process for the preparation of nanosized acicular magnetic iron oxide particles of maghemite phase16 Sep 2004US 2004/0179997 A1Council of Scientific and Industrial Research
Most cited
By later US patents
- Magnetic iron oxides with improved orientability and a process for their production31US 3,931,025 ABayer Aktiengesellschaft · 1976
- Production of finely divided acicular magnetic iron oxides23US 3,947,502 ABayer Aktiengesellschaft · 1976
- Preparation of acicular .alpha.-Fe.sub.2 O.sub.321US 4,826,671 ABASF SE · 1989
- Production of acicular magnetic iron oxides19US 4,136,158 AToda Kogyo Corporation · 1979
- Coating iron oxide particles for magnetic recording17US 4,400,432 ABayer Aktiengesellschaft · 1983