B29C 53/12
Helically
Official title: helically, e.g. for making springs {(for textile fibres D02G1/00)}
B29C53/12 (Helically) appears on 92 US grants and 48 published applications in this corpus.
Search patents in B29C- Granted patents
- 92
- Published applications
- 48
- Assignees
- 65
- Inventors
- 161
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 2 |
| 2003 | 2 | 2 |
| 2004 | 3 | 4 |
| 2005 | 0 | 4 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 2 |
| 2009 | 2 | 5 |
| 2010 | 3 | 2 |
| 2011 | 0 | 3 |
| 2012 | 0 | 3 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 3 | 2 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 4 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite coil spring with carbon and glass fiber layers31 Mar 2026US 12,590,616 B2Mitsubishi Steel Mfg. Co., Ltd.
- Medical coiled tubing3 Jun 2025US 12,318,568 B2Codan US Corporation
- Method and device for producing helical coils6 Aug 2024US 12,053,919 B2Leo Feinwerktechnik GmbH & Co. KG
- Medical coiled tubing10 Oct 2023US 11,779,748 B2Codan US Corporation
- Coil spring and method of fabrication thereof15 Feb 2022US 11,248,674 B2Ressorts Liberte Inc.
- Method and Device for Producing a Coiled Tubing from a Thermoplastic Material21 Mar 2024US 2024/0092006 A1Truplast Kunststofftechnik GmbH
- Method and device for producing helical coils13 Oct 2022US 2022/0324157 A1Leo Feinwerktechnik GmbH & Co. KG
- Composite coil spring with carbon and glass fiber layers2 Jun 2022US 2022/0170525 A1Mitsubishi Steel Mfg. Co., Ltd.
- Medical coiled tubing31 Mar 2022US 2022/0096809 A1Codan US Corporation
- Medical coiled tubing31 Mar 2022US 2022/0096813 A1Codan US Corporation
Most cited
By later US patents
- Carbon fiber reinforced composite coil spring68US 4,260,143 ACelanese Corporation · 1981
- Method for production of a helical spring from a fiber-reinforced plastic65US 4,434,121 AAudi NSU Auto Union Aktiengesellschaft · 1984
- Coiled tubing63US 4,009,734 AParker-Hannifin Corporation · 1977
- Fiber-reinforced resin coil spring and method of manufacturing the same50US 4,473,217 AKato Hatsujo Kaisha, Ltd. · 1984
- Process for forming improved carbon fiber reinforced composite coil spring47US 4,380,483 ACelanese Corporation · 1983