G01N 2291/01
Indexing codes associated with the measuring variable
G01N2291/01 (Indexing codes associated with the measuring variable) appears on 2,007 US grants and 1,770 published applications in this corpus.
Search patents in G01N- Granted patents
- 2,007
- Published applications
- 1,770
- Assignees
- 1,158
- Inventors
- 4,605
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 10 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 15 | 0 |
| 1993 | 14 | 0 |
| 1994 | 12 | 0 |
| 1995 | 23 | 0 |
| 1996 | 34 | 0 |
| 1997 | 59 | 0 |
| 1998 | 62 | 0 |
| 1999 | 50 | 0 |
| 2000 | 57 | 0 |
| 2001 | 64 | 14 |
| 2002 | 90 | 56 |
| 2003 | 62 | 73 |
| 2004 | 65 | 67 |
| 2005 | 47 | 49 |
| 2006 | 41 | 44 |
| 2007 | 40 | 42 |
| 2008 | 34 | 40 |
| 2009 | 26 | 45 |
| 2010 | 38 | 34 |
| 2011 | 20 | 30 |
| 2012 | 28 | 21 |
| 2013 | 25 | 18 |
| 2014 | 15 | 30 |
| 2015 | 19 | 81 |
| 2016 | 33 | 82 |
| 2017 | 61 | 135 |
| 2018 | 64 | 120 |
| 2019 | 127 | 130 |
| 2020 | 119 | 135 |
| 2021 | 127 | 115 |
| 2022 | 120 | 114 |
| 2023 | 102 | 109 |
| 2024 | 108 | 79 |
| 2025 | 76 | 67 |
| 2026 | 44 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sensor, method and computer program for determining the density or composition of a fluid29 Sep 2026US 12,748,075 B2WoePal GmbH
- Sensors incorporated into adhesive material15 Sep 2026US 12,736,504 B2Lyten, Inc.
- Method and system for ultrasound time-of-flight measurement8 Sep 2026US 12,730,218 B2Texas Instruments Incorporated
- Sound pressure metrology instrument and determining sound pressure from index of refraction1 Sep 2026US 12,724,009 B2Government of the United States of America, AS Represented By the Secretary of Commerce
- Sensing devices1 Sep 2026US 12,726,755 B2Shenzhen Shokz Co., Ltd.
- Fluid cell device and method for measuring drilling mud properties8 Oct 2026US 2026/0309674 A1
- Measuring device and a measuring method for determining parameters of flat hygiene paper and textile-like or textile sheet materials1 Oct 2026US 2026/0298876 A1Emtec Electronic GmbH
- System and method for acoustic spectroscopy for fluid measurement1 Oct 2026US 2026/0298880 A1Petroleo Brasileiro S.A. - Petrobras
- Medical device for identifying, in particular presence identification, and/or classifying a medical item1 Oct 2026US 2026/0301909 A1
- Inspection apparatus, inspection method, and method for manufacturing semiconductor device17 Sep 2026US 2026/0276597 A1Kioxia Corporation
Most cited
By later US patents
- Circuit for driving ultrasonic transducer409US 4,965,532 AOlympus Optical Co., Ltd. · 1990
- Golf club head with a high coefficient of restitution313US 6,605,007 B1Acushnet Company · 2003
- Method and apparatus for material analysis267US 5,348,002 ASirraya, Inc. · 1994
- Method and apparatus for elasticity imaging using remotely induced shear wave263US 5,810,731 AArtann Laboratories, Inc. · 1998
- Metal wood club with improved hitting face257US 7,029,403 B2Acushnet Company · 2006