B01F 35/81
Forming mixtures with changing ratios or gradients
B01F35/81 (Forming mixtures with changing ratios or gradients) appears on 73 US grants and 100 published applications in this corpus.
Search patents in B01F- Granted patents
- 73
- Published applications
- 100
- Assignees
- 77
- Inventors
- 227
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 4 |
| 2002 | 0 | 4 |
| 2003 | 0 | 3 |
| 2004 | 3 | 7 |
| 2005 | 1 | 2 |
| 2006 | 0 | 4 |
| 2007 | 1 | 6 |
| 2008 | 2 | 0 |
| 2009 | 0 | 8 |
| 2010 | 3 | 2 |
| 2011 | 4 | 5 |
| 2012 | 1 | 5 |
| 2013 | 2 | 12 |
| 2014 | 3 | 6 |
| 2015 | 7 | 3 |
| 2016 | 4 | 6 |
| 2017 | 3 | 2 |
| 2018 | 4 | 2 |
| 2019 | 0 | 6 |
| 2020 | 4 | 3 |
| 2021 | 2 | 3 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Spreader or sprayer and control system therefore19 May 2026US 12,630,989 B2Douglas Dynamics, L.L.C.
- Microfluidic serial dilution platform based well-plate using an oil-free immiscible phase driven by manual or electronic pipettors6 May 2025US 12,290,811 B2Unchained Labs
- Low dispersion, fast response mixing device20 Feb 2024US 11,904,277 B2Xerox Corporation
- Microfluidic microchips by 3D printing24 Jan 2023US 11,560,305 B1
- Point-of-use dynamic concentration delivery system with high flow and high uniformity12 Jul 2022US 11,383,211 B2Tokyo Electron Limited
- Spreader or sprayer and control system therefore3 Sep 2026US 2026/0258620 A1Douglas Dynamics, L.L.C.
- Non-destructive measurement, dispense, and replication of density gradients2 Apr 2026US 2026/0092849 A1Beckman Coulter, Inc.
- Device and method for mixing components of a ceramic starting material5 Jun 2025US 2025/0177938 A1bredent GmbH & Co. KG
- Multi-material bioprinting23 May 2024US 2024/0165879 A1
- Functionally graded and selective deposition of electrode material on current collector in li-ion battery11 Apr 2024US 2024/0120457 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Upright water extraction cleaning machine148US 6,041,472 ABISSELL Homecare, Inc. · 2000
- Method and apparatus for gradient generation83US 6,705,357 B2President and Fellows of Harvard College · 2004
- Fluidic arrays and method of using82US 7,741,130 B2President and Fellows of Harvard College · 2010
- Upright water extraction cleaning machine77US 6,279,196 B1BISSELL Homecare, Inc. · 2001
- Upright water extraction cleaning machine with improved tank structure69US 6,167,586 ABISSELL Homecare, Inc. · 2001