B23C 3/32
Milling helical grooves
Official title: Milling helical grooves, e.g. in making twist-drills
B23C3/32 (Milling helical grooves) appears on 51 US grants and 49 published applications in this corpus.
Search patents in B23C- Granted patents
- 51
- Published applications
- 49
- Assignees
- 42
- Inventors
- 98
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 4 |
| 2006 | 2 | 3 |
| 2007 | 2 | 4 |
| 2008 | 3 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 4 |
| 2014 | 2 | 4 |
| 2015 | 4 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 2 |
| 2018 | 4 | 4 |
| 2019 | 3 | 2 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 2 |
| 2025 | 3 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Constant rake fluted drill bit and method of manufacture21 Apr 2026US 12,605,795 B1
- Whirling tool6 Jan 2026US 12,515,269 B2HM Process Technology AG
- Method for manufacturing screw rotor12 Aug 2025US 12,383,966 B2Daikin Industries, Ltd.
- Manufacture of a dental tool15 Apr 2025US 12,274,592 B2Prima Dental Manufacturing Limited
- Constant rake fluted drill bit and method of manufacture18 Feb 2025US 12,226,861 B1
- Manufacturing method of gear12 Feb 2026US 2026/0042140 A1Aisin Corporation
- Method for manufacturing screw rotor, screw rotor, and screw compressor16 Jan 2025US 2025/0018458 A1Daikin Industries, Ltd.
- Corrugating roller manufacturing method, corrugating roller manufacturing apparatus, and corrugating roller28 Nov 2024US 2024/0391006 A1
- Manufacture of a dental tool14 Mar 2024US 2024/0081962 A1Prima Dental Manufacturing Limited
- Systems and methods for electromagnetic forming of containers29 Jun 2023US 2023/0201904 A1Belvac Production Machinery, Inc.
Most cited
By later US patents
- Elastic element for the use in a stabilization device for bones and vertebrae and method for the manufacture of such elastic element78US 7,833,256 B2Biedermann Motech GmbH · 2010
- Methods for manufacturing endodontic instruments by milling64US 7,322,105 B2Ultradent Products, Inc. · 2008
- Method of producing endodontic instruments25US 6,890,134 B13M Espe AG · 2005
- Elastic element for the use in a stabilization device for bones and vertebrae and method for the manufacture of such elastic element19US 8,449,574 B2Biedermann Technologies GmbH & Co. KG · 2013
- Planetary milling machine14US 4,125,057 A1978