G01N 2291/044
Internal reflections
Official title: Internal reflections (echoes), e.g. on walls or defects
G01N2291/044 (Internal reflections) appears on 1,724 US grants and 1,421 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,724
- Published applications
- 1,421
- Assignees
- 941
- Inventors
- 3,800
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 9 | 0 |
| 1980 | 9 | 0 |
| 1981 | 14 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 19 | 0 |
| 1985 | 10 | 0 |
| 1986 | 12 | 0 |
| 1987 | 18 | 0 |
| 1988 | 11 | 0 |
| 1989 | 20 | 0 |
| 1990 | 19 | 0 |
| 1991 | 22 | 0 |
| 1992 | 26 | 0 |
| 1993 | 23 | 0 |
| 1994 | 25 | 0 |
| 1995 | 29 | 0 |
| 1996 | 36 | 0 |
| 1997 | 26 | 0 |
| 1998 | 27 | 0 |
| 1999 | 34 | 0 |
| 2000 | 45 | 0 |
| 2001 | 25 | 8 |
| 2002 | 39 | 32 |
| 2003 | 44 | 41 |
| 2004 | 43 | 54 |
| 2005 | 45 | 57 |
| 2006 | 44 | 57 |
| 2007 | 42 | 68 |
| 2008 | 30 | 48 |
| 2009 | 39 | 61 |
| 2010 | 45 | 42 |
| 2011 | 44 | 37 |
| 2012 | 39 | 42 |
| 2013 | 35 | 38 |
| 2014 | 39 | 36 |
| 2015 | 28 | 79 |
| 2016 | 36 | 72 |
| 2017 | 52 | 58 |
| 2018 | 59 | 75 |
| 2019 | 64 | 74 |
| 2020 | 97 | 85 |
| 2021 | 63 | 103 |
| 2022 | 84 | 85 |
| 2023 | 68 | 63 |
| 2024 | 76 | 52 |
| 2025 | 50 | 36 |
| 2026 | 22 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Acoustic influence map based flaw size imaging25 Aug 2026US 12,716,871 B2Evident Canada, Inc.
- Non-contact ultrasound viscoelastic spectroscopy25 Aug 2026US 12,716,873 B2University of Southern California
- Method and apparatus for determining the set of focal laws of a plurality of focal points located in a three-dimensional test object in the presence of a coupling medium18 Aug 2026US 12,710,398 B2Consejo Superior De Investigaciones CientíFicas (Csic) M
- Annular-A characterization for inner tubular eccentricity and wave propagation speed estimation30 Jun 2026US 12,669,480 B2Schlumberger Technology Corporation
- Systems and methods for non-destructive parts testing9 Jun 2026US 12,650,410 B2
- Artificial intelligence-based internal defect detection system for concrete members17 Sep 2026US 2026/0276604 A1Seoul National University R&Db Foundation
- Processing chambers for cleaning and inspection of bonded substrates and related methods27 Aug 2026US 2026/0251617 A1APPLIED Materials.Inc.
- Method For Detecting Cracks In A Tubular Pipe27 Aug 2026US 2026/0251618 A1Electricite de France
- Ultrasonic inspection device using upper probe module and lower probe module20 Aug 2026US 2026/0243735 A1Viewon Co., Ltd.
- Method for manufacturing a preform element for a wind turbine rotor blade30 Jul 2026US 2026/0216972 A1
Most cited
By later US patents
- Ultra-thin acoustic transducer and balloon catheter using same in imaging array subassembly688US 4,841,977 AInter Therapy, Inc. · 1989
- Concurrent ultrasonic weld evaluation system357US 4,712,722 AEG&G, Inc. · 1987
- Flexible cable243US 5,174,164 AWestinghouse Electric Corp. · 1992
- Sensor transport system for combination flash butt welder217US 5,777,229 AThe Babcock & Wilcox Company · 1998
- EMAT probe and technique for weld inspection214US 5,760,307 A1998