B21K 1/768
Hollow
Official title: {hollow}
B21K1/768 (Hollow) appears on 43 US grants and 37 published applications in this corpus.
Search patents in B21K- Granted patents
- 43
- Published applications
- 37
- Assignees
- 23
- Inventors
- 54
- Latest grant
- 6 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 5 |
| 2003 | 2 | 3 |
| 2004 | 5 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 3 | 3 |
| 2013 | 4 | 2 |
| 2014 | 2 | 1 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 5 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus and method for manufacturing rack bar6 Aug 2024US 12,053,816 B2Neturen Co., Ltd.
- Manufacturing method for hollow rack bar and hollow rack bar manufacturing apparatus14 May 2024US 11,980,929 B2Neturen Co., Ltd.
- Method for manufacturing rack bar15 Feb 2022US 11,247,263 B2Neturen Co., Ltd.
- Hollow rack bar and method of manufacturing the hollow rack bar22 Oct 2019US 10,449,995 B2Neturen Co., Ltd.
- Rack bar and rack bar teeth forming die28 Aug 2018US 10,060,518 B2Neturen Co., Ltd.
- Apparatus and method for manufacturing rack bar24 Oct 2024US 2024/0351094 A1Neturen Co., Ltd.
- Apparatus and method for manufacturing rack bar9 Dec 2021US 2021/0379648 A1Neturen Co., Ltd.
- Rack bar blank material, rack bar, rack bar blank material manufacturing method, and rack bar manufacturing method10 Sep 2020US 2020/0284334 A1Neturen Co., Ltd.
- Manufacturing method for hollow rack bar and hollow rack bar manufacturing apparatus3 Sep 2020US 2020/0277002 A1Neturen Co., Ltd.
- Rack bar and method for manufacturing rack bar20 Feb 2020US 2020/0056693 A1Neturen Co., Ltd.
Most cited
By later US patents
- Rack gear and method of making the same26US 4,133,221 ATRW Inc. · 1979
- Method of producing a rack from pipe material and a rack thus produced26US 4,598,451 AKokan Kako Co., Ltd. · 1986
- Steering rack shaft and method of manufacturing the same21US 5,473,960 AKabushiki Kaisha Yamada Seisakusho · 1995
- Hollow rack shaft and method of manufacturing the same19US 6,442,992 B1Nsk Ltd. · 2002
- Method of manufacturing a hollow rack bar14US 6,289,710 B1TRW Automotive Japan Co., Ltd. · 2001