B41J 9/02
Hammers
Official title: Hammers; Arrangements thereof
B41J9/02 (Hammers) appears on 168 US grants and 2 published applications in this corpus.
Search patents in B41J- Granted patents
- 168
- Published applications
- 2
- Assignees
- 64
- Inventors
- 222
- Latest grant
- 29 Jul 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 11 | 0 |
| 1983 | 16 | 0 |
| 1984 | 13 | 0 |
| 1985 | 19 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 13 | 0 |
| 1989 | 12 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Line printer hammer banks29 Jul 2014US 8,789,922 B2Printronix, Inc.
- Line printer hammer banks25 Feb 2014US 8,657,409 B1Printronix, Inc.
- Line printer with staggered magnetics23 Nov 2004US 6,821,035 B2Printronix, Inc.
- Printer hammer tip and method for making20 Aug 2002US 6,437,280 B1Printronix, Inc.
- Skipping printer driving method10 Apr 2001US 6,213,013 B1NEC Corporation
Most cited
By later US patents
- Full field MICR encoder45US 4,624,588 AMaverick Microsystems, Inc. · 1986
- Rotary wheel printer22US 4,565,128 AAlps Electric Co., Ltd. · 1986
- Hammer assembly19US 4,037,532 AXerox Corporation · 1977
- Dot printing mechanism for dot matrix line printers19US 4,351,235 AMannesmann Tally Corporation · 1982
- Rotary wheel printer19US 4,856,921 AAlps Electric Co., Ltd. · 1989