B41J 9/133
Construction of hammer body or tip
B41J9/133 (Construction of hammer body or tip) appears on 31 US grants and 0 published applications in this corpus.
Search patents in B41J- Granted patents
- 31
- Published applications
- 0
- Assignees
- 17
- Inventors
- 62
- Latest grant
- 20 Aug 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Printer hammer tip and method for making20 Aug 2002US 6,437,280 B1Printronix, Inc.
- Printer hammerspring9 Aug 1994US 5,335,999 APrintronix, Inc.
- Print hammers of printing head in dot line printer2 Jun 1992US 5,118,210 AHitachi Koki Co., Ltd.
- Printing hammer device4 Dec 1990US 4,974,976 ABrother Kogyo Kabushiki Kaisha
- Unitary spring armature for a dot matrix printer20 Sep 1988US 4,771,689 ADataproducts Corporation
No published applications in this class yet.
Most cited
By later US patents
- Hammer assembly19US 4,037,532 AXerox Corporation · 1977
- Print hammer in dot printer11US 4,304,495 APilot Man-Nen-Hitsu Kabushiki Kaisha · 1981
- Single piece hammer module8US 4,503,768 AMannesmann Tally Corporation · 1985
- Print hammer assembly method8US 4,524,259 ADataproducts Corporation · 1985
- Method of making a printing hammer unit7US 4,044,455 ACanon Denshi Kabushiki Kaisha · 1977