B21C 3/18
Making tools by operations not covered by a single other subclass
Official title: Making tools by operations not covered by a single other subclass; Repairing
B21C3/18 (Making tools by operations not covered by a single other subclass) appears on 22 US grants and 8 published applications in this corpus.
Search patents in B21C- Granted patents
- 22
- Published applications
- 8
- Assignees
- 13
- Inventors
- 44
- Latest grant
- 3 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Composite sintered material and tool using same3 May 2022US 11,319,255 B2Sumitomo Electric Hardmetal Corp.
- Die for drawing metal wire rod, and method for manufacturing same19 Nov 2019US 10,478,877 B2Bridgestone Corporation
- Sucker rod8 Mar 2016US 9,278,412 B2
- Wire drawing die23 Jun 2015US 9,061,336 B2A. L. M. T. Corp.
- Material for diamond sintered body die and diamond sintered body die7 Nov 2006US 7,131,314 B2Sumitomo Electric Hardmetal Corp.
- Composite sintered material and tool using same7 Oct 2021US 2021/0309579 A1Sumitomo Electric Hardmetal Corp.
- Die for drawing metal wire rod, and method for manufacturing same2 Mar 2017US 2017/0056946 A1Bridgestone Corporation
- Sucker rod2 Jun 2016US 2016/0151819 A1
- Sucker rod26 May 2016US 2016/0144415 A1
- Sucker rod27 Feb 2014US 2014/0053404 A1TRC Services, Inc.
Most cited
By later US patents
- Method of making tool inserts and drill bits161US 4,481,016 A1984
- Axial sweep-through process for preparing diamond wire die compacts35US 4,534,934 AGeneral Electric Company · 1985
- Wire drawing die and method of making the same17US 4,129,052 AFort Wayne Wire Die, Inc. · 1978
- Method for the production of tools for deep drawing, moulding, extruding and the like16US 4,231,982 AAB Volvo · 1980
- Method of making a wire drawing die10US 4,241,625 AFort Wayne Wire Die, Inc. · 1980