C22F
Changing the physical structure of non-ferrous metals and non-ferrous alloys
Official title: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)
C22F (Changing the physical structure of non-ferrous metals and non-ferrous alloys) appears on 6,281 US grants and 7,351 published applications in this corpus.
Search patents in C22F- Granted patents
- 6,281
- Published applications
- 7,351
- Assignees
- 2,515
- Inventors
- 14,239
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 64 | 0 |
| 1977 | 39 | 0 |
| 1978 | 51 | 0 |
| 1979 | 41 | 0 |
| 1980 | 32 | 0 |
| 1981 | 35 | 0 |
| 1982 | 25 | 0 |
| 1983 | 43 | 0 |
| 1984 | 45 | 0 |
| 1985 | 40 | 0 |
| 1986 | 52 | 0 |
| 1987 | 61 | 0 |
| 1988 | 57 | 0 |
| 1989 | 114 | 0 |
| 1990 | 76 | 0 |
| 1991 | 70 | 0 |
| 1992 | 88 | 0 |
| 1993 | 78 | 0 |
| 1994 | 78 | 0 |
| 1995 | 71 | 0 |
| 1996 | 92 | 0 |
| 1997 | 78 | 0 |
| 1998 | 84 | 0 |
| 1999 | 89 | 0 |
| 2000 | 93 | 0 |
| 2001 | 97 | 46 |
| 2002 | 127 | 157 |
| 2003 | 129 | 155 |
| 2004 | 92 | 181 |
| 2005 | 70 | 171 |
| 2006 | 63 | 149 |
| 2007 | 59 | 176 |
| 2008 | 47 | 171 |
| 2009 | 88 | 220 |
| 2010 | 104 | 246 |
| 2011 | 114 | 251 |
| 2012 | 128 | 295 |
| 2013 | 157 | 332 |
| 2014 | 157 | 352 |
| 2015 | 190 | 392 |
| 2016 | 259 | 455 |
| 2017 | 273 | 450 |
| 2018 | 316 | 410 |
| 2019 | 389 | 436 |
| 2020 | 335 | 446 |
| 2021 | 302 | 375 |
| 2022 | 279 | 360 |
| 2023 | 294 | 366 |
| 2024 | 273 | 288 |
| 2025 | 222 | 275 |
| 2026 | 121 | 196 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Resistor and manufacturing method thereof6 Oct 2026US 12,753,466 B2Daido Steel Co., Ltd.
- Resettable metallic glass and manufacturing method therefor6 Oct 2026US 12,753,474 B2Seoul National University R&Db Foundation
- High-strength solder-plated Al—Mg—Si aluminum material6 Oct 2026US 12,753,475 B2Speira GmbH
- Cu—Ag alloy wire and method for producing the same6 Oct 2026US 12,755,860 B2SWCC Corporation
- Metal alloy surface modification methods and related metal alloy products with improved bond durability29 Sep 2026US 12,746,619 B2Novelis Inc.
- A nickel-base alloy, an object made thereof and the use thereof8 Oct 2026US 2026/0308719 A1Alleima EMEA AB
- Cu-ag alloy wire8 Oct 2026US 2026/0308721 A1Furukawa Electric Co., Ltd.
- High-strength and high-impact toughness near-beta titanium alloy, and preparation method and use thereof8 Oct 2026US 2026/0308722 A1Central South University
- Nickel-based alloy8 Oct 2026US 2026/0308725 A1Alleima Tube AB
- Rapidly solidified aluminum-rare earth element alloy and method of making the same8 Oct 2026US 2026/0308738 A1Eck Industries, Inc.
Most cited
By later US patents
- Multiple electrode ablation apparatus1,035US 5,536,267 AZoMed International · 1996
- Guidewire with superelastic distal portion468US 5,341,818 AAdvanced Cardiovascular Systems, Inc. · 1994
- Radially expandable non-axially contracting surgical stent438US 6,042,606 ACook Incorporated · 2000
- Golf club head with a face composed of a forged material388US 6,354,962 B1Callaway Golf Company · 2002
- Niti-type medical guide wire and method of producing the same380US 6,508,803 B1Furukawa Electric Co., Ltd. · 2003