B41J 9/44
Control for hammer-impression mechanisms
B41J9/44 (Control for hammer-impression mechanisms) appears on 133 US grants and 3 published applications in this corpus.
Search patents in B41J- Granted patents
- 133
- Published applications
- 3
- Assignees
- 44
- Inventors
- 195
- Latest grant
- 4 Aug 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 9 | 0 |
| 1990 | 1 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 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 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Printer4 Aug 2020US 10,730,314 B2Seiko Epson Corporation
- Printer13 Nov 2018US 10,124,612 B2Toshiba Tec Kabushiki Kaisha
- Printer6 Mar 2018US 9,908,349 B2Toshiba Tec Kabushiki Kaisha
- Printer coil temperature sensor and method24 Feb 1998US 5,720,561 APrintronix, Inc.
- Serial printing apparatus with sentence memory and display25 Nov 1997US 5,690,435 ACanon Kabushiki Kaisha
Most cited
By later US patents
- Ink ribbon cassette including means for identifying the type of ink ribbon contained therein and containing an ink ribbon having end indication means108US 4,880,325 ACanon Kabushiki Kaisha · 1989
- Rotary wheel printing system37US 4,118,129 AQume Corporation · 1978
- Variable print-hammer control for on-the-fly-printing36US 4,189,246 AInternational Business Machines Corporation · 1980
- Printer, provided with an impact device comprising a transducer28US 4,192,230 AU. S. Philips Corporation · 1980
- Print hammer drive circuit with compensation for voltage variation28US 4,293,888 AInternational Business Machines Corporation · 1981