F25B 2309/1402
Pulse-tube cycles with acoustic driver
F25B2309/1402 (Pulse-tube cycles with acoustic driver) appears on 37 US grants and 34 published applications in this corpus.
Search patents in F25B- Granted patents
- 37
- Published applications
- 34
- Assignees
- 34
- Inventors
- 93
- Latest grant
- 4 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 5 | 2 |
| 2004 | 3 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 3 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 4 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 3 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 5 |
| 2017 | 3 | 0 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 3 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Traveling wave heat engine65US 4,114,380 A1978
- Double acting pulse tube electroacoustic system38US 5,813,234 A1998
- Thermo-acoustic system35US 6,314,740 B12001
- High frequency thermoacoustic refrigerator30US 6,574,968 B1University of Utah · 2003
- Vibratory acoustic compressor25US 5,231,337 AHarman International Industries, Incorporated · 1993