D21D 5/16
Cylinders and plates for screens
D21D5/16 (Cylinders and plates for screens) appears on 166 US grants and 91 published applications in this corpus.
Search patents in D21D- Granted patents
- 166
- Published applications
- 91
- Assignees
- 79
- Inventors
- 206
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 4 | 5 |
| 2002 | 8 | 5 |
| 2003 | 7 | 5 |
| 2004 | 2 | 7 |
| 2005 | 2 | 8 |
| 2006 | 2 | 4 |
| 2007 | 2 | 8 |
| 2008 | 0 | 3 |
| 2009 | 3 | 2 |
| 2010 | 4 | 6 |
| 2011 | 2 | 3 |
| 2012 | 5 | 4 |
| 2013 | 3 | 6 |
| 2014 | 3 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 2 |
| 2017 | 1 | 3 |
| 2018 | 0 | 2 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 1 | 2 |
| 2024 | 2 | 3 |
| 2025 | 4 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for treating mixtures of liquids and solids19 May 2026US 12,630,976 B2Lean Pulp Oy
- Screen plate and pulp screening machine30 Dec 2025US 12,509,823 B2ANDRITZ (China) Ltd.
- Screen cylinder with bars configured to receive a wear resistant spray coating30 Dec 2025US 12,509,825 B2Aikawa Fiber Technologies Oy
- Refiner filling piece having variably coated bars28 Oct 2025US 12,454,793 B2Aikawa Fiber Technologies Oy
- Screen cylinder with improved slot width protection and method of removing solid contaminants from a solid suspension14 Oct 2025US 12,442,135 B2Kadant Black Clawson LLC
- Screen cylinder with improved slot width protection15 Jan 2026US 2026/0015791 A1Kadant Black Clawson LLC
- Screen cylinder with improved slot width protection15 Jan 2026US 2026/0015792 A1Kadant Black Clawson LLC
- Screen cylinder with axially variable wear resistant coating thickness29 May 2025US 2025/0170503 A1Aikawa Fiber Technologies Oy
- Screen cylinder with bars configured to receive a wear resistant spray coating22 May 2025US 2025/0163644 A1Aikawa Fiber Technologies Oy
- Wear resistant spray coating of screen cylinders by varying the spray angle15 May 2025US 2025/0154637 A1Aikawa Fiber Technologies Oy
Most cited
By later US patents
- Process for performing reactions in a liquid-solid catalyst slurry88US 5,527,473 A1996
- Screen basket having a removable and replaceable cylindrical mesh liner71US 5,968,357 AVoith Sulzer Paper Technology North America, Inc. · 1999
- Wave screen plate63US 4,954,249 ABeloit Corporation · 1990
- Rotary drum type device for separating solid particles from a liquid59US 5,618,424 ANagaoka International Corporation · 1997
- Wear screen plate and method of manufacture thereof47US 5,139,154 ABeloit Corporation · 1992