F22B 37/103
Internally ribbed tubes
Official title: {Internally ribbed tubes}
F22B37/103 (Internally ribbed tubes) appears on 25 US grants and 22 published applications in this corpus.
Search patents in F22B- Granted patents
- 25
- Published applications
- 22
- Assignees
- 18
- Inventors
- 45
- Latest grant
- 29 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 0 | 2 |
| 2013 | 3 | 5 |
| 2014 | 2 | 2 |
| 2015 | 1 | 2 |
| 2016 | 3 | 1 |
| 2017 | 0 | 0 |
| 2018 | 2 | 1 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Flash boiler23 Feb 2021US 10,928,058 B2
- Straight fin for device for recovering waste heat of raw coke oven gas in ascension pipe of coke oven, and heat recovering device1 Sep 2020US 10,760,001 B2Nanjing Huadian Energy-Saving & Environmental Protection Equipment Co., Ltd
- Evaporator, rankine cycle apparatus, and combined heat and power system3 Dec 2019US 10,494,957 B2Panasonic Intellectual Property Management Co., Ltd.
- Transfer pipe for furnace30 Apr 2019US 10,274,193 B2Doosan Heavy Industries Construction Co., Ltd
- Straight fin for device for recovering waste heat of raw coke oven gas in ascension pipe of coke oven, and heat recovering device13 Feb 2020US 2020/0048557 A1Nanjing Huadian Energy-Saving & Environmental Protection Equipment Co., Ltd
- Flash boiler15 Aug 2019US 2019/0249864 A1Vytis, Ltd.
- Steam generator pipe having a turbulence installation body25 Apr 2019US 2019/0120482 A1Siemens Aktiengesellschaft
- Evaporator, rankine cycle apparatus, and combined heat and power system12 Apr 2018US 2018/0100411 A1Panasonic Intellectual Property Management Co., Ltd.
- Heat transfer tube, boiler and steam turbine device3 Nov 2016US 2016/0320052 A1Mitsubishi Hitachi Power Systems, Ltd.
Most cited
By later US patents
- Rib design for boiler tubes29US 4,314,587 ACombustion Engineering, Inc. · 1982
- Vapor generating system utilizing integral separators and angularly arranged furnace boundary wall fluid flow tubes having rifled bores11US 4,191,133 AFoster Wheeler Energy Corporation · 1980
- Once-through steam generator with a vertical gas flue of essentially vertically disposed tubes8US 5,662,070 ASiemens Aktiengesellschaft · 1997
- Pipe with ribs on its inner surface forming a multiple thread and steam generator for using the pipe7US 6,302,194 B1Siemens Aktiengesellschaft · 2001
- Method of operating a once-through steam generator and a corresponding steam generator6US 5,706,766 ASiemens Aktiengesellschaft · 1998