B21D 22/201
Work-pieces
Official title: {Work-pieces; preparation of the work-pieces, e.g. lubricating, coating}
B21D22/201 (Work-pieces) appears on 143 US grants and 116 published applications in this corpus.
Search patents in B21D- Granted patents
- 143
- Published applications
- 116
- Assignees
- 111
- Inventors
- 398
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 2 | 3 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 3 | 3 |
| 2014 | 0 | 1 |
| 2015 | 5 | 10 |
| 2016 | 2 | 8 |
| 2017 | 3 | 10 |
| 2018 | 2 | 10 |
| 2019 | 9 | 4 |
| 2020 | 9 | 7 |
| 2021 | 5 | 4 |
| 2022 | 3 | 7 |
| 2023 | 5 | 15 |
| 2024 | 9 | 7 |
| 2025 | 3 | 7 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for forming and heat treating near net shape complex structures from sheet metal14 Apr 2026US 12,599,953 B2Spirit AeroSystems, Inc.
- Stamping method and deep-drawing die for aluminum alloy liner of large-volume hydrogen storage cylinder18 Nov 2025US 12,472,549 B2Sinoma Science & Technology (Chengdu) Co., Ltd.
- Method and apparatus for dispersing oil29 Jul 2025US 12,370,561 B2Compass Systems & Sales, LLC
- Method and apparatus for dispersing oil4 Mar 2025US 12,240,009 B2Compass Systems & Sales, LLC
- Production method for hot press molded articles, press molded article, die mold, and mold set31 Dec 2024US 12,179,246 B2Nippon Steel Corporation
- Forming station and method for hot forming a blank made of metal, in particular aluminum23 Jul 2026US 2026/0208252 A1Andritz Schuler Pressen GmbH
- Press-formed product and production method of press-formed product9 Jul 2026US 2026/0192348 A1Jfe Steel Corporation
- Method and apparatus for inspecting coating status of punching oil using vision16 Apr 2026US 2026/0105586 A1Samsung SDI.Co., Ltd.
- Press-fit structure26 Feb 2026US 2026/0055786 A1Dtech Precision Industries Co., Ltd.
- Method and apparatus for dispersing oil23 Oct 2025US 2025/0325995 A1Compass Systems & Sales, LLC
Most cited
By later US patents
- Method and apparatus for drawing sheet metal can stock45US 5,014,536 AWeirton Steel Corporation · 1991
- Process for preparation of thickness-reduced deep-draw-formed can27US 5,249,447 AToyo Seikan Kaisha, Ltd. · 1993
- Redrawing method24US 4,962,659 AToyo Seikan Kaisha, Ltd. · 1990
- In-line control during draw-redraw of one-piece sheet metal can bodies21US 4,584,859 AWeirton Steel Corporation · 1986
- Can components having a metal-plastic-metal structure21US 6,098,829 A2000