B08B 9/0552
Spherically shaped pigs
Official title: {Spherically shaped pigs}
B08B9/0552 (Spherically shaped pigs) appears on 36 US grants and 34 published applications in this corpus.
Search patents in B08B- Granted patents
- 36
- Published applications
- 34
- Assignees
- 31
- Inventors
- 85
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 3 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 3 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 1 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Jetting-based pipeline scraper10 Feb 2026US 12,546,429 B2Saudi Arabian Oil Company
- Pipe cleaner and pipeline cleaning system7 Oct 2025US 12,434,278 B2Contemporary Amperex Technology (Hong Kong) Limited
- Pipeline inspection system with scale removing feature24 Dec 2024US 12,173,831 B2Catholic Kwandong University Industry Foundation
- Cleaning ball and method for manufacturing same21 May 2024US 11,988,472 B2Mizuki Co., Ltd.
- Systems and methods for decoking a coker furnace during a delayed coking process11 Jul 2023US 11,697,775 B2Bechtel Energy Technologies & Solutions, Inc.
- Jetting-based pipeline scraper3 Apr 2025US 2025/0109817 A1Saudi Arabian Oil Company
- Pipeline inspection system6 Feb 2025US 2025/0043899 A1Catholic Kwandong University Industry Foundation
- Multipurpose pipeline surface applicator31 Oct 2024US 2024/0359221 A1ChampionX LLC
- Pipe cleaner and pipeline cleaning system2 May 2024US 2024/0139785 A1Contemporary Amperex Technology Co., Limited
- Systems and methods for decoking a coker furnace during a delayed coking process20 Apr 2023US 2023/0124266 A1Bechtel Energy Technologies & Solutions, Inc.
Most cited
By later US patents
- Method and apparatus for cleaning a drill string54US 8,646,521 B22014
- Internal pipe cleaning device39US 6,272,713 B12001
- Pipeline spheres23US 4,406,030 AGeneral Descaling Company Limited · 1983
- Cleaning member for cleaning the interior of heat exchanger tubes22US 4,406,031 ATaprogge Gesellschaft mbH · 1983
- Device and method for launching and/or retrieving pipeline scrapers20US 4,016,621 AWillis Oil Tool Co. · 1977