E21B 17/01
Risers
E21B17/01 (Risers) appears on 1,431 US grants and 1,259 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,431
- Published applications
- 1,259
- Assignees
- 525
- Inventors
- 2,286
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 13 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 16 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 14 | 0 |
| 1984 | 20 | 0 |
| 1985 | 14 | 0 |
| 1986 | 11 | 0 |
| 1987 | 18 | 0 |
| 1988 | 9 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 12 | 0 |
| 1996 | 10 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 23 | 0 |
| 2000 | 27 | 0 |
| 2001 | 29 | 7 |
| 2002 | 45 | 24 |
| 2003 | 29 | 25 |
| 2004 | 24 | 32 |
| 2005 | 17 | 30 |
| 2006 | 29 | 35 |
| 2007 | 14 | 35 |
| 2008 | 30 | 54 |
| 2009 | 20 | 37 |
| 2010 | 31 | 59 |
| 2011 | 23 | 63 |
| 2012 | 31 | 62 |
| 2013 | 41 | 71 |
| 2014 | 61 | 78 |
| 2015 | 89 | 98 |
| 2016 | 90 | 100 |
| 2017 | 99 | 83 |
| 2018 | 67 | 73 |
| 2019 | 82 | 63 |
| 2020 | 66 | 54 |
| 2021 | 41 | 48 |
| 2022 | 59 | 27 |
| 2023 | 37 | 35 |
| 2024 | 26 | 36 |
| 2025 | 34 | 17 |
| 2026 | 14 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Retrofit vortex-induced-vibration (VIV) suppression device29 Sep 2026US 12,747,640 B2Oceaneering International, Inc.
- Connector assembly for emergency decoupling of a subsea end fitting of a movable subsea structure29 Sep 2026US 12,747,653 B2S3N Ventus Ltd
- Arrangement for preventing collection of debris and cuttings on the top of a riser closure device1 Sep 2026US 12,723,488 B2Enhanced Drilling AS
- Hydraulic actuation system for diverless bell mouth18 Aug 2026US 12,710,113 B2Petroleo Brasileiro S.A. - Petrobras
- Stackable float assembly14 Jul 2026US 12,680,397 B2Eddy Pump Corporation
- Connector assemblies and processes for using same27 Aug 2026US 2026/0251236 A1Koil Energy Solutions, Inc.
- Connector assembly20 Aug 2026US 2026/0243136 A1BMS Design Limited
- Offshore fluid handling23 Jul 2026US 2026/0210190 A1Aker Solutions Subsea AS
- Installation of subsea risers16 Jul 2026US 2026/0201755 A1Subsea 7 Norway AS
- A hang-off device for an end fitting of a subsea tubular16 Jul 2026US 2026/0201764 A1S3N Ventus Ltd
Most cited
By later US patents
- Cardiac pacing using adjustable atrio-ventricular delays393US 6,542,775 B2Cardiac Pacemakers, Inc. · 2003
- Dynamically positioned, concentric riser, drilling method and apparatus213US 6,273,193 B1Transocean Sedco Forex, Inc. · 2001
- Cardiac pacing using adjustable atrio-ventricular delays206US 6,360,127 B1Cardiac Pacemakers, Inc. · 2002
- Cardiac pacing using adjustable atrio-ventricular delays199US 6,144,880 ACardiac Pacemakers, Inc. · 2000
- Cardiac pacing using adjustable atrio-ventricular delays156US 6,351,673 B1Cardiac Pacemakers, Inc. · 2002