D21F 1/34
Construction or arrangement of spraying pipes
D21F1/34 (Construction or arrangement of spraying pipes) appears on 35 US grants and 22 published applications in this corpus.
Search patents in D21F- Granted patents
- 35
- Published applications
- 22
- Assignees
- 25
- Inventors
- 61
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 3 |
| 2025 | 0 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sheet manufacturing apparatus1 Sep 2026US 12,723,351 B2Seiko Epson Corporation
- Sheet manufacturing apparatus28 Jul 2026US 12,692,655 B2Seiko Epson Corporation
- Pulp washer mist eliminator and foam remover system5 Jul 2022US 11,377,794 B2
- Lubricating device for lubricating a clothing3 May 2022US 11,319,669 B2Voith Patent GmbH
- Nozzle cap, nozzle device provided with such cap, and spraying method of chemical solution22 Dec 2020US 10,870,118 B2Maintech Co., Ltd.
- Water laminated tissue products20 Aug 2026US 2026/0243031 A1Kimberly-Clark Worldwide, Inc.
- Sheet manufacturing apparatus26 Dec 2024US 2024/0426053 A1Seiko Epson Corporation
- Sheet manufacturing apparatus and sheet manufacturing method28 Nov 2024US 2024/0392504 A1Seiko Epson Corporation
- Sheet manufacturing apparatus15 Feb 2024US 2024/0052568 A1Seiko Epson Corporation
- Cleaning device for a suction roller and method for cleaning a suction roller8 Sep 2022US 2022/0282426 A1Voith Patent GmbH
Most cited
By later US patents
- Process for making wet-laid structures containing individualized stiffened fibers33US 4,889,597 AThe Procter & Gamble Cellulose Company · 1989
- Method and a device for cutting a web in a paper machine by means of a water jet22US 4,931,140 AOy Tampella AB · 1990
- Irrigation sprinkler with ratcheting manual nozzle rotation17US 8,777,124 B2Hunter Industries, Inc. · 2014
- Guide shower for a fabric belt16US 3,966,544 AJWI Ltd. · 1976
- Nozzle for spray tubes15US 5,211,335 AKvaerner Eureka a.s. · 1993