B23P 9/02
Treating or finishing by applying pressure
Official title: Treating or finishing by applying pressure, e.g. knurling (B23P9/04 takes precedence)
B23P9/02 (Treating or finishing by applying pressure) appears on 289 US grants and 259 published applications in this corpus.
Search patents in B23P- Granted patents
- 289
- Published applications
- 259
- Assignees
- 154
- Inventors
- 571
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 7 |
| 2003 | 3 | 10 |
| 2004 | 13 | 4 |
| 2005 | 2 | 20 |
| 2006 | 11 | 12 |
| 2007 | 7 | 16 |
| 2008 | 7 | 14 |
| 2009 | 7 | 8 |
| 2010 | 10 | 10 |
| 2011 | 11 | 11 |
| 2012 | 7 | 12 |
| 2013 | 11 | 20 |
| 2014 | 6 | 9 |
| 2015 | 11 | 17 |
| 2016 | 10 | 7 |
| 2017 | 10 | 12 |
| 2018 | 15 | 13 |
| 2019 | 8 | 10 |
| 2020 | 10 | 12 |
| 2021 | 7 | 6 |
| 2022 | 8 | 8 |
| 2023 | 6 | 3 |
| 2024 | 7 | 7 |
| 2025 | 5 | 6 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Roller scraper for scraping physical media elements2 Jun 2026US 12,643,032 B1Jackpocket LLC
- Apparatus and method for refining a ball joint stud21 Apr 2026US 12,607,222 B2Musashi Auto Parts Canada Inc.
- Coldwork holes with seamless sleeve and uniform expansion30 Dec 2025US 12,508,637 B1
- Method for manufacturing a die-casting machine and die-casting machine25 Nov 2025US 12,479,023 B2Italpressegauss S.P.A.
- Cold working tool for openings in metal pieces23 Sep 2025US 12,420,364 B2Electroimpact, Inc.
- Friction drilled spray header16 Apr 2026US 2026/0102780 A1
- Apparatus and related methods for repairing machine parts using a hybrid pre-heating system26 Mar 2026US 2026/0084211 A1Rtx Corporation
- Method for multi-field coupling strengthening of an ice skate blade edge29 Jan 2026US 2026/0027609 A1Avic Manufacturing Technology Institute
- Device for Machining, in Particular for Deep-Rolling, Shafts8 Jan 2026US 2026/0008108 A1Hegenscheidt-MFD GmbH & Co. KG
- Multi-axis deep rolling tool for hollow fan blade complex edge base enhancing corrosion resistance2 Oct 2025US 2025/0303458 A1Rtx Corporation
Most cited
By later US patents
- Cushioned fastener joint84US 4,405,256 A1983
- Method of forming a coldworked joint80US 4,164,807 A1979
- Method of cold expanding and sizing fastener holes75US 4,557,033 AFatigue Technology, Inc. · 1985
- Pulling apparatus and method66US 4,187,708 AIndustrial Wire & Metal Forming, Inc. · 1980
- Nut mounting grommet66US 5,096,349 AFatigue Technology, Inc. · 1992