F04C 23/006
Having complementary function
Official title: {having complementary function}
F04C23/006 (Having complementary function) appears on 53 US grants and 69 published applications in this corpus.
Search patents in F04C- Granted patents
- 53
- Published applications
- 69
- Assignees
- 34
- Inventors
- 143
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 4 |
| 2010 | 2 | 9 |
| 2011 | 2 | 6 |
| 2012 | 6 | 3 |
| 2013 | 4 | 2 |
| 2014 | 3 | 3 |
| 2015 | 4 | 4 |
| 2016 | 1 | 4 |
| 2017 | 3 | 2 |
| 2018 | 4 | 5 |
| 2019 | 3 | 2 |
| 2020 | 3 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 1 |
| 2023 | 1 | 6 |
| 2024 | 3 | 3 |
| 2025 | 4 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Supercharged internal combustion engine with intake port timing shutters controlling the air mass flowing into the supercharger31 Mar 2026US 12,590,584 B2
- Cartridge style front cover and coupling cavity sleeve for automotive supercharger31 Mar 2026US 12,590,585 B2Eaton Intelligent Power Limited
- Air compressor having vacuum and associated methods for loading and extracting materials30 Dec 2025US 12,510,077 B2Industrial Vacuum Transfer Services USA, LLC
- Vacuum line and method for controlling a vacuum line to reduce explosion potential via injection of diluent gas to lower flammable gas concentration16 Dec 2025US 12,496,563 B2Pfeiffer Vacuum GmbH
- Secondary airflow paths for air compressors9 Sep 2025US 12,410,799 B2Doosan Bobcat North America, Inc.
- Scroll compressor1 Oct 2026US 2026/0298234 A1Ishikawa Energy Research Co., Ltd.
- Air compressor having vacuum and associated methods for loading and extracting materials23 Apr 2026US 2026/0110299 A1Industrial Vacuum Transfer Services USA, LLC
- Supercharged internal combustion engine2 Jan 2025US 2025/0003363 A1Hansen Engine Corporation
- Secondary airflow paths for air compressors10 Oct 2024US 2024/0337262 A1Doosan Bobcat North America, Inc.
- Supercharged internal combustion engine5 Sep 2024US 2024/0295189 A1Hansen Engine Corporation
Most cited
By later US patents
- Compressor having capacity modulation system31US 7,988,434 B2Emerson Climate Technologies, Inc. · 2011
- Light-gas-isolation, oil-free, scroll vaccum-pump system25US 5,542,828 A1996
- Compressing device14US 10,234,183 B2Kobe Steel, Ltd. · 2019
- Vehicle having internal combustion engine with supercharger14US 8,186,333 B2Honda Motor Co., Ltd. · 2012
- Fluid machine and refrigeration cycle apparatus10US 8,408,024 B2Panasonic Corporation · 2013