Description
Class F22D : PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS
Subclass 1/00: Feed-water heaters, e.g. preheaters
F22D 1/00
Sub-Class
Stats
- 60 US PATENTS IN FORCE
- 7 US APPLICATIONS PENDING
- 26 Total Patent Owners
- 343 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12130011 | Steam boiler system and method of circulating water and steam in a steam boiler system | Dec 06, 22 | Oct 29, 24 | MAXI-THERME INC. |
| 12050007 | Low-carbon energy utilization system for steam and power cogeneration of oil field | Oct 14, 21 | Jul 30, 24 | Tsinghua University |
| 11940178 | Condensing, ultra-low NOx gas-fired humidifier | Jun 30, 22 | Mar 26, 24 | Dri-Steem Corporation |
| 11692703 | Water feedback in vertical forced-flow steam generators | Mar 13, 18 | Jul 04, 23 | SIEMENS ENERGY GLOBAL GMBH & CO. KG |
| 11662147 | Heat exchange system and method | Aug 16, 21 | May 30, 23 | Advanced Steam Technology Company LLC |
| 11362254 | Thermoelectric power generator and combustion apparatus | Mar 11, 15 | Jun 14, 22 | University of Central Florida Research Foundation Inc. |
| 11236640 | Steam power plant, modification method and operation method of steam power plant | Jul 15, 20 | Feb 01, 22 | MITSUBISHI POWER, LTD. |
| 11118781 | Vertical heat recovery steam generator | Jul 19, 16 | Sep 14, 21 | SIEMENS ENERGY GLOBAL GMBH & CO. KG |
| 11022005 | Steam turbine power plant utilizing industrial heat pumps to preheat boiler feed-water | Sep 21, 20 | Jun 01, 21 | Not available |
| 10982567 | Condensate and feedwater system of steam power plant and operation method for the same | Dec 11, 19 | Apr 20, 21 | MITSUBISHI POWER, LTD. |
| 10907823 | Evaporator system | Oct 24, 17 | Feb 02, 21 | Siemens Aktiengesellschaft |
| 10851678 | Thermal energy recovery device and startup operation method for the same | Nov 15, 17 | Dec 01, 20 | Kobe Steel, Ltd. |
| 10845048 | Method and apparatus for recovery of heat from bulk solids | May 31, 17 | Nov 24, 20 | SOLEX THERMAL SCIENCE INC. |
| 10845049 | Steam power generating system with injection feedwater heater | Jul 31, 18 | Nov 24, 20 | Not available |
| 10788204 | Injection feedwater heater for steam power generating system | Jul 31, 18 | Sep 29, 20 | Not available |
| 10753602 | Influence analyzing apparatus for analyzing influence of combustibles | Sep 11, 17 | Aug 25, 20 | Doosan Heavy Industries Construction Co., Ltd. |
| 10501847 | Apparatus and method for generating a vapor for a CVD or PVD device | Jun 17, 15 | Dec 10, 19 | AIXTRON SE |
| 10393369 | System and method for fluid medium preheating | Mar 27, 15 | Aug 27, 19 | General Electric Company |
| 10378763 | Method and apparatus to facilitate heating feedwater in a power generation system | Dec 03, 15 | Aug 13, 19 | General Electric Company |
| 10337800 | Modular plate and shell heat exchanger | Jun 22, 17 | Jul 02, 19 | Westinghouse Electric Company LLC |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0012,462 | Condensing, Ultra-Low NOx Gas-Fired Humidifier | Mar 25, 24 | Jan 09, 25 | Not available |
| 2024/0425,993 | ELECTROLYZER SYSTEM WITH STEAM GENERATION AND METHOD OF OPERATING SAME | Sep 03, 24 | Dec 26, 24 | Not available |
| 2024/0418,361 | STEAM BOILER SYSTEM AND METHOD OF CIRCULATING WATER AND STEAM IN A STEAM BOILER SYSTEM | Aug 30, 24 | Dec 19, 24 | Not available |
| 2024/0200,472 | GENERATING ELECTRICAL ENERGY FROM HYDROGEN AND OXYGEN | Apr 08, 22 | Jun 20, 24 | Siemens Energy Global GmbH & Co. KG |
| 2024/0158,701 | Method and System for Steamcracking | Mar 08, 22 | May 16, 24 | Not available |
| 2024/0101,446 | VAPORIZER AND VAPORIZATION SUPPLY DEVICE | Feb 01, 22 | Mar 28, 24 | Fujikin Incorporated |
| 2022/0372,636 | ELECTROLYZER SYSTEM WITH STEAM GENERATION AND METHOD OF OPERATING SAME | May 17, 22 | Nov 24, 22 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 30 Months (last 2 years Issuances)
- 30 Months (last 5 years Issuances)