B25B 27/304
By compressing coil springs
Official title: {by compressing coil springs}
B25B27/304 (By compressing coil springs) appears on 123 US grants and 45 published applications in this corpus.
Search patents in B25B- Granted patents
- 123
- Published applications
- 45
- Assignees
- 47
- Inventors
- 157
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 3 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 4 | 3 |
| 2006 | 4 | 3 |
| 2007 | 2 | 2 |
| 2008 | 2 | 2 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 3 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 3 |
| 2014 | 2 | 1 |
| 2015 | 2 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 3 |
| 2023 | 3 | 5 |
| 2024 | 2 | 2 |
| 2025 | 2 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Biasing member compression fixture15 Oct 2024US 12,115,608 B2Adrian Steel Company
- Gearbox for automotive service with planetary gear21 May 2026US 2026/0138251 A1
- Shock absorber attachment jig11 Sep 2025US 2025/0282433 A1Toyota Jidosha Kabushiki Kaisha
- Device for assembling three workpieces together10 Jul 2025US 2025/0222546 A1Global Manufacturing Partners Holdings Limited
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Most cited
By later US patents
- Spring compressor42US 4,516,303 A1985
- Spring compressor26US 4,009,867 AK-D Manufacturing Company · 1977
- Compression spring cramp26US 4,219,918 A1980
- Spring and retainer assembly and spring delashed steering shafts25US 4,509,775 AGeneral Motors Corporation · 1985
- Spring compressor tool22US 4,034,960 A1977