A61M 2202/0439
White blood cells
Official title: White blood cells; Leucocytes
A61M2202/0439 (White blood cells) appears on 371 US grants and 290 published applications in this corpus.
Search patents in A61M- Granted patents
- 371
- Published applications
- 290
- Assignees
- 120
- Inventors
- 562
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 12 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 16 | 0 |
| 1996 | 14 | 0 |
| 1997 | 17 | 0 |
| 1998 | 18 | 0 |
| 1999 | 12 | 0 |
| 2000 | 12 | 0 |
| 2001 | 12 | 5 |
| 2002 | 11 | 13 |
| 2003 | 3 | 8 |
| 2004 | 5 | 10 |
| 2005 | 4 | 7 |
| 2006 | 6 | 3 |
| 2007 | 4 | 5 |
| 2008 | 4 | 13 |
| 2009 | 4 | 4 |
| 2010 | 11 | 6 |
| 2011 | 2 | 4 |
| 2012 | 2 | 4 |
| 2013 | 7 | 10 |
| 2014 | 6 | 10 |
| 2015 | 4 | 19 |
| 2016 | 11 | 18 |
| 2017 | 15 | 16 |
| 2018 | 12 | 17 |
| 2019 | 13 | 22 |
| 2020 | 8 | 16 |
| 2021 | 17 | 16 |
| 2022 | 20 | 22 |
| 2023 | 16 | 5 |
| 2024 | 12 | 12 |
| 2025 | 7 | 12 |
| 2026 | 9 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for returning treated mononuclear cells to a blood source29 Sep 2026US 12,746,317 B2Fenwal, Inc.
- Fluid processing cassette with integrated filter28 Jul 2026US 12,691,396 B2Fenwal, Inc.
- Unit for filtering leukocytes with reduced platelet adhesion7 Jul 2026US 12,673,147 B2Maco Pharma
- System for blood cell separation28 Apr 2026US 12,611,679 B2Fresenius Kabi Deutschland GmbH
- Optimizing device for freely switching between blood cell component removal and plasma exchange7 Apr 2026US 12,594,370 B2Xiangya Hospital Central South University
- Hollow fiber membrane and hollow fiber membrane module6 Aug 2026US 2026/0225044 A1Toray Industries, Inc.
- Filter device4 Jun 2026US 2026/0151547 A1Terumo Kabushiki Kaisha
- Filter device28 May 2026US 2026/0144918 A1Terumo Kabushiki Kaisha
- Filter device28 May 2026US 2026/0144919 A1Terumo Kabushiki Kaisha
- Cell delivery injector21 May 2026US 2026/0137869 A1Bayer HealthCare LLC
Most cited
By later US patents
- Blood filter and method of filtration941US 5,190,657 ALydall, Inc. · 1993
- Device and method for separating plasma from a biological fluid268US 5,601,727 APall Corporation · 1997
- Method for separating blood into blood components, and blood components separator unit263US 4,985,153 AAsahi Medical Co., Ltd. · 1991
- Methods for enriching specific cell-types by density gradient centrifugation255US 5,840,502 AActivated Cell Therapy, Inc. · 1998
- Blood collection and processing system252US 5,100,564 APall Corporation · 1992