D21G 3/02
Doctors: for calenders
Official title: for calenders
D21G3/02 (Doctors: for calenders) appears on 17 US grants and 3 published applications in this corpus.
Search patents in D21G- Granted patents
- 17
- Published applications
- 3
- Assignees
- 8
- Inventors
- 42
- Latest grant
- 29 Jan 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 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 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Doctor blade holders and doctor blade holder systems including planar elements with three dimensional fabric reinforcement materials29 Jan 2019US 10,190,258 B2Kadant Inc.
- System for keeping calender rolls of a paper machine clean12 Dec 2006US 7,147,754 B2Metso Paper, Inc.
- Method and equipment for cleaning and maintaining rolls14 Jun 2005US 6,905,573 B2Metso Paper, Inc.
- Calendar roll cleaning apparatus4 May 2004US 6,729,230 B1Fuji Photo Film Co., Ltd.
- Web embossing method11 Sep 2001US 6,287,421 B1Fort James Corporation
- Doctor blade holders and doctor blade holder systems including planar elements with three dimensional fabric reinforcement materials16 Feb 2017US 2017/0044719 A1Kadant Inc.
- Method and equipment for cleaning and maintaning rolls26 Feb 2004US 2004/0035540 A1Metso Paper, Inc.
- System for keeping calender rolls of a paper machine clean24 Jul 2003US 2003/0136538 A1Metso Paper, Inc.
Most cited
By later US patents
- Utilization of a suction nozzle and jet nozzle for cleaning moving objects43US 5,603,775 A1997
- Roll surface cleaning device40US 4,953,252 AFuji Photo Film Co., Ltd. · 1990
- Apparatus for cleaning calender rolls and the like20US 4,852,209 AKleinewefers GmbH · 1989
- Cleaning apparatus for rolls16US 5,519,945 AValmet Corporation · 1996
- Controlled-deflection roll9US 4,092,916 AEscher Wyss Limited · 1978