G01N 11/00
Investigating flow properties of materials
Official title: Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
G01N11/00 (Investigating flow properties of materials) appears on 2,682 US grants and 2,373 published applications in this corpus.
Search patents in G01N- Granted patents
- 2,682
- Published applications
- 2,373
- Assignees
- 1,500
- Inventors
- 5,821
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 21 | 0 |
| 1978 | 18 | 0 |
| 1979 | 22 | 0 |
| 1980 | 15 | 0 |
| 1981 | 14 | 0 |
| 1982 | 21 | 0 |
| 1983 | 10 | 0 |
| 1984 | 26 | 0 |
| 1985 | 26 | 0 |
| 1986 | 37 | 0 |
| 1987 | 34 | 0 |
| 1988 | 25 | 0 |
| 1989 | 39 | 0 |
| 1990 | 32 | 0 |
| 1991 | 32 | 0 |
| 1992 | 28 | 0 |
| 1993 | 43 | 0 |
| 1994 | 45 | 0 |
| 1995 | 19 | 0 |
| 1996 | 37 | 0 |
| 1997 | 33 | 0 |
| 1998 | 43 | 0 |
| 1999 | 41 | 0 |
| 2000 | 32 | 0 |
| 2001 | 44 | 18 |
| 2002 | 52 | 49 |
| 2003 | 65 | 74 |
| 2004 | 70 | 77 |
| 2005 | 57 | 58 |
| 2006 | 55 | 58 |
| 2007 | 52 | 51 |
| 2008 | 45 | 55 |
| 2009 | 34 | 69 |
| 2010 | 45 | 87 |
| 2011 | 45 | 70 |
| 2012 | 61 | 79 |
| 2013 | 58 | 101 |
| 2014 | 70 | 89 |
| 2015 | 56 | 98 |
| 2016 | 83 | 112 |
| 2017 | 82 | 121 |
| 2018 | 78 | 135 |
| 2019 | 132 | 136 |
| 2020 | 127 | 152 |
| 2021 | 128 | 117 |
| 2022 | 112 | 136 |
| 2023 | 125 | 152 |
| 2024 | 123 | 101 |
| 2025 | 83 | 88 |
| 2026 | 82 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 11/10Investigating flow properties of materials: by moving a body within the material1,382
- G01N 11/02Investigating flow properties of materials: by measuring flow of the material849
- G01N 2011/006Determining flow properties indirectly by measuring other parameters of the systemIndexing code307
- G01N 2011/0006Calibrating, controlling or cleaning viscometersIndexing code141
- G01N 2011/0046In situ measurement during mixing processIndexing code96
- G01N 2011/0026Investigating specific flow properties of non-newtonian fluidsIndexing code80
Recent patents
- Measurement of flow rate, density, viscosity, and rheology of multiphase fluids in a pipe6 Oct 2026US 12,754,115 B2Saudi Arabian Oil Company
- Apparatus and method for measuring viscosity or one or more rheological properties of fluids29 Sep 2026US 12,748,028 B2
- Diagnostic apparatus for dry electrode mixtures29 Sep 2026US 12,749,724 B2Hyundai Motor Company
- Optical measurement of flow parameters22 Sep 2026US 12,742,669 B2Flowlit Ltd.
- Opto chip-based viscometer22 Sep 2026US 12,742,716 B2Southern University of Science and Technology
- Manufacturing System and Method of Dry Electrode8 Oct 2026US 2026/0309597 A1SK On Co., Ltd.
- System and method for measuring rheological properties of fluid by using rotating body having any shape8 Oct 2026US 2026/0309607 A1Industry-Academic Cooperation Foundation Gyeongsang National University
- Method for determining a measurement variable of a medium8 Oct 2026US 2026/0309608 A1Endress + Hauser GmbH + Co. KG
- Tensile acoustic rheometry for characterization of viscoelastic materials24 Sep 2026US 2026/0287488 A1The Regents of the University of Michigan
- Method and system for determining the specific temperature corresponding to a viscometric fixed point for a free fluid stream17 Sep 2026US 2026/0276507 A1Saint-Gobain Isover
Most cited
By later US patents
- Torque compensated electric motor1,230US 4,373,147 AGeneral Signal Corporation · 1983
- Modular data collection and analysis system379US 6,434,512 B1Reliance Electric Technologies, LLC · 2002
- Multi-reservoir pressure control system330US 6,915,679 B2Caliper Life Sciences, Inc. · 2005
- High temperature continuous viscometry coupled with analytic temperature rising elution fractionation for evaluating crystalline and semi-crystalline polymers272US 4,798,081 AThe Dow Chemical Company · 1989
- Apparatus for assaying viscosity changes in fluid samples and method of conducting same243US 5,628,961 AI-Stat Corporation · 1997