G01N 21/8922
Periodic flaws
Official title: {Periodic flaws}
G01N21/8922 (Periodic flaws) appears on 25 US grants and 22 published applications in this corpus.
Search patents in G01N- Granted patents
- 25
- Published applications
- 22
- Assignees
- 24
- Inventors
- 58
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 3 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 3 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for the inspection of a circular elongated element24 Feb 2026US 12,560,421 B2Schott AG
- Methods and systems for measuring the texture of carpet1 Jul 2025US 12,345,656 B2Columbia Insurance Company
- Method for defect detection for rolling elements15 Apr 2025US 12,276,617 B2Schaeffler Technologies AG & Co. KG
- Learned model generation method, learned model, surface defect inspection method, steel manufacturing method, pass/fail determination method, grade determination method, surface defect determination program, pass/fail determination program, determination system, and steel manufacturing equipment1 Apr 2025US 12,266,094 B2Jfe Steel Corporation
- Methods and systems for measuring the texture of carpet8 Aug 2023US 11,719,647 B2Columbia Insurance Company
- Apparatus for the inspection of a circular elongated element21 May 2026US 2026/0140065 A1Schott AG
- Methods and systems for measuring the texture of carpet6 Nov 2025US 2025/0341476 A1Columbia Insurance Company
- Method for defect detection for rolling elements21 Dec 2023US 2023/0408421 A1Schaeffler Technologies AG & Co. KG
- Methods and systems for measuring the texture of carpet12 Oct 2023US 2023/0324310 A1Columbia Insurance Company
- Apparatus for the inspection of a circular elongated element9 Mar 2023US 2023/0072907 A1Schott AG
Most cited
By later US patents
- Web monitoring for paper machines55US 5,745,365 AJohn Heyer Paper Ltd. · 1998
- Multi-roller registered repeat defect detection of a web process line33US 7,797,133 B23M Innovative Properties Company · 2010
- Method for controlling quality and condition on the basis of thermal imaging30US 6,849,851 B2Metso Paper Automation Oy · 2005
- Method for extracting and classifying sheet variation patterns from two-dimensional sheet measurements23US 6,411,860 B1ABB Industrial Systems, Inc. · 2002
- Quality and condition monitoring based on spectrum separating measurement20US 7,155,356 B2Metso Automation Oy · 2006