F01C 21/0845
Comprising elastic means
Official title: {comprising elastic means, e.g. springs}
F01C21/0845 (Comprising elastic means) appears on 107 US grants and 110 published applications in this corpus.
Search patents in F01C- Granted patents
- 107
- Published applications
- 110
- Assignees
- 54
- Inventors
- 194
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 4 |
| 2003 | 1 | 3 |
| 2004 | 3 | 9 |
| 2005 | 1 | 9 |
| 2006 | 6 | 7 |
| 2007 | 4 | 2 |
| 2008 | 3 | 7 |
| 2009 | 10 | 7 |
| 2010 | 4 | 2 |
| 2011 | 4 | 4 |
| 2012 | 5 | 9 |
| 2013 | 3 | 2 |
| 2014 | 4 | 2 |
| 2015 | 5 | 6 |
| 2016 | 2 | 5 |
| 2017 | 2 | 3 |
| 2018 | 3 | 2 |
| 2019 | 4 | 1 |
| 2020 | 1 | 7 |
| 2021 | 3 | 8 |
| 2022 | 6 | 1 |
| 2023 | 4 | 4 |
| 2024 | 3 | 1 |
| 2025 | 3 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bidirectional rotary hydraulic motor and pump13 Jan 2026US 12,523,153 B2
- Mechanical seal device7 Oct 2025US 12,435,792 B2Pillar Corporation
- Mechanical seal device16 Sep 2025US 12,416,360 B2Pillar Corporation
- Bidirectional rotary hydraulic motor and pump11 Mar 2025US 12,247,489 B2
- Vane pump for medical instrument21 May 2024US 11,986,422 B2Johnson & Johnson Surgical Vision, Inc.
- Rotary Vane Internal Combustion Engine17 Sep 2026US 2026/0275869 A1
- Rotary vane pump with angular position sensing capability12 Feb 2026US 2026/0043403 A1Schaeffler Technologies AG & Co. KG
- Mechanical seal device18 Sep 2025US 2025/0290566 A1Pillar Corporation
- Mechanical seal device12 Jun 2025US 2025/0189040 A1Pillar Corporation
- Bidirectional Rotary Hydraulic Motor and Pump29 May 2025US 2025/0172068 A1
Most cited
By later US patents
- Rotary pump with wiper insert38US 6,053,717 A2000
- Defroster of refrigerant circuit and rotary compressor26US 6,732,542 B2Sanyo Electric Co., Ltd. · 2004
- Rolling piston compressor with locking device for the separating slide18US 4,397,618 ABitzer Kuhlmaschinenbau GmbH · 1983
- Vane spring for air motor16US 4,789,145 AIngersoll-Rand Company · 1988
- Rotary vane compressor with improved vane extension means13US 4,032,270 ABorg-Warner Corporation · 1977