B24C 3/325
For internal surfaces
Official title: {for internal surfaces, e.g. of tubes}
B24C3/325 (For internal surfaces) appears on 271 US grants and 237 published applications in this corpus.
Search patents in B24C- Granted patents
- 271
- Published applications
- 237
- Assignees
- 181
- Inventors
- 637
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 7 | 2 |
| 2003 | 3 | 6 |
| 2004 | 5 | 15 |
| 2005 | 4 | 2 |
| 2006 | 4 | 6 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 0 | 9 |
| 2010 | 1 | 10 |
| 2011 | 3 | 3 |
| 2012 | 6 | 8 |
| 2013 | 9 | 10 |
| 2014 | 8 | 13 |
| 2015 | 7 | 10 |
| 2016 | 10 | 13 |
| 2017 | 14 | 17 |
| 2018 | 6 | 17 |
| 2019 | 17 | 25 |
| 2020 | 13 | 19 |
| 2021 | 9 | 13 |
| 2022 | 20 | 11 |
| 2023 | 7 | 6 |
| 2024 | 9 | 5 |
| 2025 | 13 | 11 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dry cleaning device and dry cleaning method1 Sep 2026US 12,722,190 B2Gudeng Precision Industrial Co., Ltd.
- Abrasive flow machining process for a meridionally divided turbine housing, and a masking fixture used in said process11 Aug 2026US 12,703,064 B2Garrett Transportation I Inc.
- Suspension cleaning21 Apr 2026US 12,605,056 B2Saban Ventures Pty Limited
- Method and apparatus for improving steam oxidation resistance of small diameter boiler tube in coal-fired boiler3 Feb 2026US 12,540,729 B2Xi'an Thermal Power Research Institute Co., Ltd.
- Mechanical joint gasket with protrusions9 Dec 2025US 12,492,749 B2EBAA Iron, Inc.
- Abrasive flow machining process for a meridionally divided turbine housing, and a masking fixture used in said process1 Oct 2026US 2026/0295774 A1Garrett Transportation I Inc.
- Cavitation processing method25 Dec 2025US 2025/0387836 A1Sugino Machine Limited
- Cavitation surface processing method18 Dec 2025US 2025/0381646 A1Sugino Machine Limited
- Polishing device and polishing method4 Dec 2025US 2025/0367781 A1Aecc Shanghai Commercial Aircraft Engine Manufacturing Co., Ltd.
- Surface polishing method for micro inner flow channel, micro inner flow channel part and polishing medium27 Nov 2025US 2025/0360597 A1Aecc Shanghai Commercial Aircraft Engine Manufacturing Co., Ltd.
Most cited
By later US patents
- Coating or ablation applicator with a debris recovery attachment154US 5,795,626 AInnovative Technology Limited · 1998
- Abrasive containing fluid jet drilling apparatus and process117US 4,534,427 A1985
- Method for polishing surgical stents80US 5,746,691 AGlobal Therapeutics, Inc. · 1998
- Coating or ablation applicator with debris recovery attachment63US 6,074,135 AInnovative Technologies, LLC · 2000
- System and method for cleaning the inner surface of tubular members50US 5,046,289 AWestinghouse Electric Corp. · 1991