B63H 21/32
Arrangements of propulsion power-unit exhaust uptakes
Official title: Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
B63H21/32 (Arrangements of propulsion power-unit exhaust uptakes) appears on 375 US grants and 224 published applications in this corpus.
Search patents in B63H- Granted patents
- 375
- Published applications
- 224
- Assignees
- 117
- Inventors
- 554
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 18 | 0 |
| 2001 | 20 | 4 |
| 2002 | 14 | 14 |
| 2003 | 20 | 15 |
| 2004 | 16 | 15 |
| 2005 | 9 | 10 |
| 2006 | 8 | 11 |
| 2007 | 11 | 3 |
| 2008 | 8 | 3 |
| 2009 | 4 | 9 |
| 2010 | 4 | 7 |
| 2011 | 6 | 10 |
| 2012 | 6 | 7 |
| 2013 | 8 | 8 |
| 2014 | 15 | 7 |
| 2015 | 14 | 6 |
| 2016 | 7 | 3 |
| 2017 | 16 | 12 |
| 2018 | 9 | 12 |
| 2019 | 19 | 8 |
| 2020 | 8 | 10 |
| 2021 | 10 | 5 |
| 2022 | 12 | 14 |
| 2023 | 12 | 11 |
| 2024 | 11 | 10 |
| 2025 | 5 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Beaching propeller11 Aug 2026US 12,703,468 B2Raider Outboards, Inc.
- Fuel cell ship24 Mar 2026US 12,583,570 B2Yanmar Holdings Co., Ltd.
- Reefer power control17 Mar 2026US 12,576,690 B2Maersk Line A/S
- Apparatus for emissions reduction as a service (ERaaS)2 Sep 2025US 12,403,997 B2STAX Engineering, Inc.
- Exhaust handling systems for marine vessels and related methods12 Aug 2025US 12,384,508 B2Marathon Petroleum Company LP
- Integrated process for removing carbon dioxide from a ship or offshore floating vessel using a rotating packed device20 Aug 2026US 2026/0243184 A1Chevron U.S.A.Inc.
- Fuel cell ship25 Jun 2026US 2026/0175956 A1Yanmar Holdings Co., Ltd.
- Offshore platform allowing carbon neutral fuel to be produced, stored and supplied, overcoming intermittency of renewable energy18 Jun 2026US 2026/0167307 A1Korea Institute of Ocean Science & Technology
- Apparatus and Process for Ship-Based Carbon Dioxide Capture for Fuel Production21 May 2026US 2026/0138714 A1Air Products and Chemicals, Inc.
- Exhaust handling systems for marine vessels and related methods27 Nov 2025US 2025/0360999 A1Marathon Petroleum Company LP
Most cited
By later US patents
- Exhaust mixer and apparatus using same68US 6,606,854 B1Allison Advanced Development Company · 2003
- Marine wet exhaust system and improvements in powered marine vessel54US 4,019,456 AWhittaker Corporation · 1977
- Exhaust system for small vessel47US 4,997,399 ASanshin Kogyo Kabushiki Kaisha · 1991
- Four-cycle engine for a small jet boat47US 5,846,102 AKawasaki Jukogyo Kabushiki Kaisha · 1998
- Exhaust system for small planing boat45US 5,234,364 ASanshin Kogyo Kabushiki Kaisha · 1993