D21G 3/00
Doctors
D21G3/00 (Doctors) appears on 285 US grants and 215 published applications in this corpus.
Search patents in D21G- Granted patents
- 285
- Published applications
- 215
- Assignees
- 108
- Inventors
- 464
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 14 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 3 |
| 2002 | 15 | 18 |
| 2003 | 14 | 14 |
| 2004 | 15 | 13 |
| 2005 | 10 | 13 |
| 2006 | 5 | 11 |
| 2007 | 7 | 9 |
| 2008 | 3 | 10 |
| 2009 | 3 | 12 |
| 2010 | 12 | 10 |
| 2011 | 6 | 3 |
| 2012 | 11 | 10 |
| 2013 | 1 | 7 |
| 2014 | 3 | 9 |
| 2015 | 5 | 5 |
| 2016 | 5 | 5 |
| 2017 | 5 | 6 |
| 2018 | 4 | 11 |
| 2019 | 6 | 9 |
| 2020 | 9 | 5 |
| 2021 | 8 | 4 |
| 2022 | 4 | 9 |
| 2023 | 4 | 6 |
| 2024 | 9 | 8 |
| 2025 | 9 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fibrous structures4 Aug 2026US 12,698,594 B2The Procter & Gamble Company
- Doctor blade including natural reinforcement fabric layers bonded together with bio-derived resin matrix11 Nov 2025US 12,467,203 B2Kadant Inc.
- Stud for a doctor blade holder in a fiber web machine and doctor blade assembly for a fiber web machine14 Oct 2025US 12,442,136 B2Valmet Technologies Oy
- Doctor23 Sep 2025US 12,420,542 B2Tkm Meyer GmbH
- Yankee drying cylinder and a tissue paper making machine23 Sep 2025US 12,421,662 B2Valmet Corporation
- Fiber body production apparatus and fiber body production method12 Mar 2026US 2026/0071383 A1Seiko Epson Corporation
- Ink jet primer applied on a corrugator20 Nov 2025US 2025/0354027 A1Electronics for Imaging, Inc.
- Scraper holder and scraping device8 May 2025US 2025/0146221 A1Voith Patent GmbH
- Creping process performance tracking and control6 Feb 2025US 2025/0044776 A1Ecolab USA Inc.
- Creping blade for tissue making30 Jan 2025US 2025/0033314 A1Irving Consumer Products Limited
Most cited
By later US patents
- Wet crepe, impingement-air dry process for making absorbent sheet110US 6,432,267 B1Georgia-Pacific Corporation · 2002
- Method of controlling adhesive build-up on a yankee dryer103US 7,850,823 B2Georgia-Pacific Consumer Products LP · 2010
- Device for the reciprocating linear drive of a part76US 4,642,839 A1987
- Method of and apparatus for compensatingly adjusting doctor blade76US 4,919,756 AThe Procter & Gamble Company · 1990
- Support beam made of composite fiber material64US 5,356,519 AJ. M. Voith GmbH · 1994