B41P 2251/11
Membrane pumps
B41P2251/11 (Membrane pumps) appears on 7 US grants and 9 published applications in this corpus.
Search patents in B41P- Granted patents
- 7
- Published applications
- 9
- Assignees
- 7
- Inventors
- 16
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 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 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid feeding device and inkjet recording apparatus15 Sep 2026US 12,736,043 B2KYOCERA Document Solutions Inc.
- Fluid delivery system with pump servicing features30 Sep 2025US 12,427,780 B2Hewlett-Packard Development Company, L. P.
- Fluid pumps with shifters8 Nov 2022US 11,493,030 B2Hewlett-Packard Development Company, L. P.
- System and method for regulating and measuring flow31 May 2016US 9,352,552 B2Tresu A/S
- Stencil printer27 Jun 2006US 7,066,086 B1Riso Kagaku Corporation
- Liquid discharge head and liquid discharge apparatus7 May 2026US 2026/0124838 A1Canon Kabushiki Kaisha
- Droplet ejection apparatus, droplet ejection apparatus abnormality detecting method, and storage medium18 Dec 2025US 2025/0381783 A1Konica Minolta, Inc.
- Liquid discharge head and liquid discharge apparatus10 Apr 2025US 2025/0115053 A1Canon Kabushiki Kaisha
- Liquid feeding device and inkjet recording apparatus13 Mar 2025US 2025/0083448 A1KYOCERA Document Solutions Inc.
- Liquid feeding device and inkjet recording apparatus13 Mar 2025US 2025/0083450 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Method and apparatus for reversibly pumping high viscosity fluids10US 5,620,746 A1997
- Method and apparatus for pumping high viscosity fluids6US 5,567,477 A1996
- Fluid pumps with shifters2US 11,493,030 B2Hewlett-Packard Development Company, L. P. · 2022
- Stencil printer2US 7,066,086 B1Riso Kagaku Corporation · 2006