F04D 1/066
The casing consisting of a plurality of annuli bolted together
Official title: {the casing consisting of a plurality of annuli bolted together}
F04D1/066 (The casing consisting of a plurality of annuli bolted together) appears on 54 US grants and 49 published applications in this corpus.
Search patents in F04D- Granted patents
- 54
- Published applications
- 49
- Assignees
- 53
- Inventors
- 141
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 4 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 2 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 3 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 4 |
| 2019 | 2 | 6 |
| 2020 | 3 | 7 |
| 2021 | 2 | 4 |
| 2022 | 3 | 3 |
| 2023 | 4 | 2 |
| 2024 | 2 | 4 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Integrated pumping system for use in pumping a variety of fluids58US 6,811,382 B2Schlumberger Technology Corporation · 2004
- Multi-stage pump powered by integral canned motors43US 5,713,727 AWestinghouse Electric Corp. · 1998
- Water jet propulsor powered by an integral canned electric motor26US 5,490,768 AWestinghouse Electric Corp. · 1996
- Centrifugal pump with monolithic diffuser and return vane channel ring member24US 5,344,285 AIngersoll-Dresser Pump Company · 1994
- Motor driven complex pump apparatus18US 5,246,336 AFuji Electric Co., Ltd. · 1993