F04C 18/0276
Different wall heights
Official title: {Different wall heights}
F04C18/0276 (Different wall heights) appears on 85 US grants and 89 published applications in this corpus.
Search patents in F04C- Granted patents
- 85
- Published applications
- 89
- Assignees
- 34
- Inventors
- 186
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 8 |
| 2003 | 4 | 3 |
| 2004 | 4 | 0 |
| 2005 | 3 | 4 |
| 2006 | 0 | 4 |
| 2007 | 2 | 4 |
| 2008 | 3 | 0 |
| 2009 | 1 | 5 |
| 2010 | 3 | 11 |
| 2011 | 3 | 2 |
| 2012 | 8 | 5 |
| 2013 | 1 | 1 |
| 2014 | 5 | 1 |
| 2015 | 2 | 0 |
| 2016 | 1 | 7 |
| 2017 | 5 | 5 |
| 2018 | 3 | 5 |
| 2019 | 1 | 3 |
| 2020 | 4 | 6 |
| 2021 | 9 | 3 |
| 2022 | 4 | 3 |
| 2023 | 2 | 3 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Scroll compressor11 Aug 2026US 12,704,126 B2Sanden Corporation
- Co-rotating scroll compressor21 Apr 2026US 12,607,186 B2Kabushiki Kaisha Toyota Jidoshokki
- Scroll compressor25 Mar 2025US 12,258,964 B2LG Electronics Inc.
- Scroll compressor including end-plate side stepped portions of each of the scrolls corresponding to wall-portion side stepped portions of each of the scrolls5 Nov 2024US 12,135,029 B2Mitsubishi Heavy Industries Thermal Systems, Ltd.
- Scroll compressor having separate flow paths in communication with different back pressure chambers30 Jul 2024US 12,049,892 B2Samsung Electronics Co., Ltd.
- Scroll compressor16 Jul 2026US 2026/0201882 A1Hanon Systems
- Scroll compressor16 Jul 2026US 2026/0201884 A1Kabushiki Kaisha Toyota Jidoshokki
- Compressor and air conditioner11 Jun 2026US 2026/0160251 A1Hitachi-Johnson Controls Air Conditioning, Inc.
- Co-rotating scroll compressor28 May 2026US 2026/0146605 A1Kabushiki Kaisha Toyota Jidoshokki
- Scroll compressor26 Feb 2026US 2026/0055765 A1Sanden Corporation
Most cited
By later US patents
- Scroll compressor with bypass holes communicating with an intake chamber65US 7,344,365 B2Mitsubishi Heavy Industries, Ltd. · 2008
- Scroll type compressor with wrap portions of different axial heights60US 4,477,238 ASanden Corporation · 1984
- Multi-stage scroll compressor57US 6,050,792 AAir Squared, Inc. · 2000
- Two stage scroll vacuum pump with improved pressure ratio and performance46US 6,439,864 B1Air Squared, Inc. · 2002
- High efficiency scroll type compressor with wrap portions having different axial heights41US 4,457,674 ASanden Corporation · 1984