D21B 1/066
The raw material being pulp sheets
Official title: {the raw material being pulp sheets}
D21B1/066 (The raw material being pulp sheets) appears on 52 US grants and 34 published applications in this corpus.
Search patents in D21B- Granted patents
- 52
- Published applications
- 34
- Assignees
- 31
- Inventors
- 100
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 2 | 2 |
| 2018 | 3 | 2 |
| 2019 | 1 | 3 |
| 2020 | 2 | 2 |
| 2021 | 3 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Material storage apparatus, method of controlling material storage apparatus, and sheet manufacturing apparatus14 Apr 2026US 12,601,112 B2Seiko Epson Corporation
- Sheet manufacturing system25 Mar 2025US 12,258,713 B2Seiko Epson Corporation
- Fiber transport apparatus7 May 2024US 11,976,415 B2Seiko Epson Corporation
- Modified fiber from shredded pulp sheets, methods, and systems24 May 2022US 11,339,532 B2International Paper Company
- Servo control device and method for disc gap in disc powder grinding system1 Jun 2021US 11,020,749 B2Northeastern University
- A mill for an air-formed cellulose blank product and method for using the same17 Sep 2026US 2026/0273540 A1PulPac AB
- Pulverization device2 Jul 2026US 2026/0185301 A1Zuiko Corporation
- A method and machine for producing cellulose fluff19 Feb 2026US 2026/0048955 A1Fameccanica, Data S.P A.
- Material storage apparatus, method of controlling material storage apparatus, and sheet manufacturing apparatus30 May 2024US 2024/0175203 A1Seiko Epson Corporation
- Method for producing air-laid products2 May 2024US 2024/0141568 A1Voith Patent GmbH
Most cited
By later US patents
- Screenless disk mill84US 5,195,684 ACurt G. Joa, Inc. · 1993
- Bale loader for fluff generator63US 4,141,509 ACurt G. Joa, Inc. · 1979
- Fluff mill49US 4,729,516 AWilliams Patent Crusher and Pulverizer Company · 1988
- Apparatus for crosslinking individualized cellulose fibers48US 5,437,418 AWeyerhaeuser Company · 1995
- Method and apparatus for fiberizing fibrous sheets38US 4,650,127 AKimberly-Clark Corporation · 1987