C21D 1/773
Under reduced pressure or vacuum
Official title: under reduced pressure or vacuum
C21D1/773 (Under reduced pressure or vacuum) appears on 176 US grants and 139 published applications in this corpus.
Search patents in C21D- Granted patents
- 176
- Published applications
- 139
- Assignees
- 142
- Inventors
- 428
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 6 |
| 2003 | 3 | 5 |
| 2004 | 5 | 4 |
| 2005 | 1 | 3 |
| 2006 | 6 | 5 |
| 2007 | 3 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 0 | 3 |
| 2012 | 1 | 3 |
| 2013 | 4 | 7 |
| 2014 | 2 | 4 |
| 2015 | 3 | 7 |
| 2016 | 4 | 17 |
| 2017 | 7 | 11 |
| 2018 | 7 | 9 |
| 2019 | 10 | 9 |
| 2020 | 12 | 6 |
| 2021 | 4 | 7 |
| 2022 | 8 | 5 |
| 2023 | 5 | 8 |
| 2024 | 5 | 7 |
| 2025 | 1 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Volume heat treatment method and related system4 Aug 2026US 12,698,541 B2Laser Engineering Applications
- Tool and manufacturing method of it21 Apr 2026US 12,605,782 B2Seco Tools AB
- High-resistance steel strip comprising a temperature homogenisation chamber25 Mar 2025US 12,258,649 B2Drever International S.A.
- Bearing component and method of manufacturing thereof22 Oct 2024US 12,123,464 B2Aktiebolaget Skf
- Procedure for hardening slides of a perforating press and the slides obtained8 Oct 2024US 12,110,565 B2Soenen Technology NV
- Process for reduction of time in gas carburizing process and cooling apparatus therefor5 Mar 2026US 2026/0062785 A1M/S Hightemp Furnaces Limited
- Nitrogen assisted hardening of an article11 Dec 2025US 2025/0376752 A1Fluid Controls Pvt. Ltd.
- Apparatus and method for preparing hot stamped part15 May 2025US 2025/0153235 A1Suzhou Pressler Technologies Co., Ltd.
- Injection molded alloy material and processing method16 Jan 2025US 2025/0018468 A1Honor Device Co., Ltd.
- Process for obtaining a fine-grained martensitic structure component15 Aug 2024US 2024/0271239 A1Danmarks Tekniske Universitet
Most cited
By later US patents
- Hydrogen annealing process and apparatus therefor428US 6,527,884 B1Hitachi Kokusai Electric Inc. · 2003
- Implantable vascular and endoluminal stents and process of fabricating the same285US 5,843,117 AInflow Dynamics Inc. · 1998
- Implantable vascular and endoluminal stents171US 6,159,237 AInflow Dynamics Inc. · 2000
- Tubular stent with oval struts91US 7,153,322 B2Inflow Dynamics Inc. · 2006
- Heat treated stainless steel needles85US 5,533,982 AUnited States Surgical Corporation · 1996