D21F 1/46
Dandy rolls
D21F1/46 (Dandy rolls) appears on 15 US grants and 9 published applications in this corpus.
Search patents in D21F- Granted patents
- 15
- Published applications
- 9
- Assignees
- 13
- Inventors
- 32
- Latest grant
- 24 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 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 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Watermark sheet, apparatus, and document, and methods for providing the same24 Nov 2020US 10,843,500 B2Crane Co.
- Printed document control with verified unique watermarks13 Mar 2018US 9,917,979 B2SonicWALL, Inc.
- Printed document control with verified unique watermarks1 Aug 2017US 9,723,171 B2SonicWALL, Inc.
- Diagonally joined cylindrical fabric and manufacturing method thereof18 Apr 2006US 7,029,555 B2Nippon Filcon Co., Ltd.
- Paper comprising an embossed pattern, method for producing and cloth for making same10 Aug 2004US 6,773,548 B1Thibierge et Comar
- Method and apparatus for manufacturing watermarked paper11 Feb 2021US 2021/0040690 A1Fedrigoni S.P.A.
- Watermark sheet, apparatus, and document, and methods for providing the same14 Mar 2019US 2019/0077183 A1Crane Co.
- Printed document control with verified unique watermarks5 Oct 2017US 2017/0289391 A1Dell Software Inc.
- Printed document control with verified unique watermarks15 Jun 2017US 2017/0171424 A1Dell Software Inc.
- Diagonally joined cylindrical fabric and manufacturing method thereof27 Jan 2005US 2005/0019521 A1Nippon Filcon Co., Ltd.
Most cited
By later US patents
- Dandy roll for manufacturing paper having simulated oxford cloth watermark and related method for papermaking9US 4,526,652 AThe Mead Corporation · 1985
- Dandy roll having a twill weave wiremark and related method for papermaking9US 5,100,512 AThe Mead Corporation · 1992
- Method of producing watermark paper8US 5,766,416 ATokushu Paper Manufacturing Co., Ltd. · 1998
- Roller for machines in the paper-making industry6US 4,619,737 AHermann Finckh Maschinenfabrik GmbH & Co. · 1986
- Paper comprising an embossed pattern, method for producing and cloth for making same6US 6,773,548 B1Thibierge et Comar · 2004