US20100264021A1 - Hydrogen-oxygen mixed gas generating system - Google Patents

Hydrogen-oxygen mixed gas generating system Download PDF

Info

Publication number
US20100264021A1
US20100264021A1 US12/590,327 US59032709A US2010264021A1 US 20100264021 A1 US20100264021 A1 US 20100264021A1 US 59032709 A US59032709 A US 59032709A US 2010264021 A1 US2010264021 A1 US 2010264021A1
Authority
US
United States
Prior art keywords
water
storage
heat radiant
mixed gas
hydrogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/590,327
Other languages
English (en)
Inventor
Boo-Sung Hwang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20100264021A1 publication Critical patent/US20100264021A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00Operating or servicing cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • the present disclosure relates to gas generating systems and, more particularly, hydrogen-oxygen mixed gas generating systems.
  • Hydrogen-oxygen mixed-gas generating systems are used to produce hydrogen and oxygen from electrolyzed water and to gain a pollution-free energy source, namely, hydrogen-oxygen mixed gas.
  • Water containing a small amount of electrolytes is provided to a storage with positive (+) and negative ( ⁇ ) electrodes and electrolyzed by direct current to produce this mixture.
  • Hydrogen and oxygen are produced at the ratio of 2:1 and hydrogen is formed as bubbles on the surface of negative ( ⁇ ) electrode and oxygen in bubbles on the surface of positive (+) electrode. Hydrogen and oxygen produced can be mixed and combusted and the mixture does not produce any pollutants when ignited, making it an important eco-friendly energy source.
  • hydrogen-oxygen mixed gas includes oxygen itself so it can be burned without outside oxygen. This suggests that fire produced at the combustion always had the possibility to backfire.
  • a hydrogen-oxygen mixed gas generating system includes water capture-storage where water is stored and hydrogen-oxygen mixed gas is captured, an electrode unit including multiple electrodes to electrolyze water, at least one water supplying pipe connecting a lower part of the water capture-storage and the electrode unit for providing water from the water capture-storage to the electrode unit, at least one gas supplying pipe connecting an upper part of the water capture-storage and the electrode unit to provide hydrogen-oxygen mixed gas produced from the electrode unit to an upper part of the store water in the water capture-storage and an endothermic heat radiant system which absorbs and radiates the heat from the water capture-storage in the water capture-storage.
  • the endothermic heat radiant system includes multiple heat radiant pipes that penetrate the water capture-storage up and down and a heat radiant pin formation contained in the heat radiant pipes to expand the contact area with air.
  • FIG. 1 is a diagram used to help explain the components of a hydrogen-oxygen mixed gas generating system according to embodiments of the present disclosure.
  • FIG. 2 is a diagram to help explain an endothermic heat radiant system according to embodiments of the present disclosure.
  • the present disclosure also provides a safe hydrogen-oxygen generating system without any possibility of backfiring in combustion.
  • a hydrogen-oxygen mixed gas generating system includes water capture-storage ( 10 ) where water is stored and hydrogen-oxygen mixed gas is captured, electrode plate ( 20 ) containing multiple electrodes ( 21 ) ( 22 ) to electrolyze water, multiple water supplying pipes ( 30 ) ( 30 ′) that provide water from the water capture-storage ( 10 ) to the electrode unit ( 20 ) by connecting the lower part of the water capture-storage ( 10 ) and the electrode plate ( 30 ), the gas supplying pipes ( 40 ) ( 40 ′) which connect the upper water capture-storage ( 10 ) and electrode unit ( 20 ) to provide hydrogen-oxygen mixed gas produced from the electrode plate ( 20 ) to the upper part of the store water in the water capture-storage ( 10 ), the endothermic heat radiant system ( 50 ) which absorb and radiate the heat from the water capture-storage ( 10 ) in the water capture-storage ( 10 ), and the endothermic heat radiant system ( 50 )
  • heat can be radiated through natural circulation without using any cooling pans or pumps, overall structure can be simplified and further more, it can be materialized in a compact size.
  • a hydrogen-oxygen mixed gas generating system contains water capture-storage ( 10 ) where water is stored and hydrogen-oxygen mixed gas is captured, electrode unit ( 20 ) to electrolyze water and multiple electrodes are built-in, multiple water supplying pipes ( 30 ) ( 30 ′) that provide water from the water capture-storage ( 10 ) to the electrode unit ( 20 ) by connecting the lower part of the water capture-storage ( 10 ) and the electrode plate ( 30 ), the gas supplying pipes ( 40 ) ( 40 ′) which connect the upper water capture-storage ( 10 ) and electrode unit ( 20 ) to provide hydrogen-oxygen mixed gas produced from the electrode plate ( 20 ) to the upper part of the store water in the water capture-storage ( 10 ), the endothermic heat radiant system ( 50 ) which absorb and radiate the heat from the water capture-storage ( 10 ) in the water capture-storage ( 10 ), the water lever balancer ( 60 ) connected to the main
  • Water capture-storage ( 10 ) provides water to the electrode plate ( 20 ) and capture the hydrogen-oxygen mixed gas produced from the electrode unit ( 20 ) at the same time.
  • Water capture-storage ( 10 ) is shaped as a cylinder and is made from a metal with high durability to stand the internal pressure.
  • a mixed gas centrifuge ( 11 ) is installed inside the water capture-storage ( 10 ) to separate the hydrogen-oxygen mixed gas produced from the electrode unit ( 20 ) from water, and the capturing device ( 12 ) to capture the hydrogen-oxygen mixed gas can be formed at the upper part of the mixed gas centrifuge ( 11 ).
  • catalyst preferably tourmaline catalyst is applied on the mesh net of the mixed gas centrifuge ( 11 ).
  • Tourmaline catalyst is coated on the mesh net or contained during the manufacturing process of the net.
  • the mixed gas centrifuge ( 11 ) makes it possible to capture the pure hydrogen-oxygen mixed gas by filtering any debris contained in the elevating hydrogen-oxygen mixed gas produced from ⁇ , +electrodes in electrolysis or debris that came in with the water. These rubbles are more effectively eliminated by the catalysis.
  • thermal conduction can be formed by using carbon nano-tube in nanometer size, preferably in 10 to 20 nanometer, and tourmaline catalyst alone or together.
  • the electrode unit ( 20 )'s goal is to produce hydrogen and oxygen by electrolyzing water, thereby includes multiple negative ( ⁇ ) and positive (+) electrodes ( 21 ) ( 22 ) placed certain distance from away from each other. These electrodes are polished by nano-technology to electrolyze water effectively and help formed hydrogen-oxygen bubbles to separate easily.
  • Nono-technology means polishing ⁇ , +electrodes' ( 21 ) ( 22 ) surface by nano units. Polishing by nano technology would minimize the electrodes' surface friction, making hydrogen or oxygen gas bubbles to separate easily.
  • the technical, thermal, electrical, magnetic, and optical properties change when the size of the matter decreases from bulk to nano meter, making electrolysis on water effortless.
  • the carbon nano-tube or tourmaline catalyst can be attached on the surfaces of ⁇ , +electrodes ( 21 ) ( 22 ).
  • the tourmaline catalyst would be grinded into micro to nanometer powder, burned in 1300° C. and glued to the ⁇ , +electrodes( 21 ) ( 22 ).
  • Tourmaline is a mineral under the hexagonal system like crystal; it produced electricity by friction, massive amount of anion, and lots of hydrogen and oxygen by electrolysis. Tourmaline becomes a catalyst with tiny pores on; it can increase the contact area with electrolyte after being powdered and burned.
  • the tourmaline catalyst can promote the electrolysis of electrolytes when attached on ⁇ , +electrodes ( 21 ) ( 22 ).
  • Water supplying pipes ( 30 ) ( 30 ′) are pipes that provide water from water capture-storage ( 10 )to electrode unit ( 20 ) and the gas supplying pipes( 40 )( 40 ′) are pipes that provide hydrogen-oxygen mixed gas formed in the electrode unit ( 20 ) to water capture-storage ( 10 ).
  • the endothermic heat radiant system ( 50 ) absorbs and radiates the heat from the water capture-storage ( 10 ).
  • Multiple heat radiant pipes ( 51 ) penetrates the water capture-storage ( 10 ) from up and down and the heat radiant pins formation ( 52 ) are built inside the pipes ( 51 ) to increase contact surface with air are included in the endothermic heat radiant system ( 50 ).
  • the heat radiant pan ( 53 ) on the upper or the lower part of the heat radiant pipes ( 51 ) and the temperature sensor which would signal the heat radiant pan ( 53 ) to act when the temperature of water capture-storage ( 10 ) is above the certain temperature would be nice if implicated.
  • the heat radiant pan ( 51 ) is composed of multiple small pipes piercing the water capture-storage from all different angles and in the example, seven pipes are used.
  • the heat radiant pins formation ( 52 ) expands the contacting surface area of the heat radiant pipes ( 51 ). These formations ( 52 ) can be made into various shapes, however, in our example as described in the diagram 2 , is a thin and long metal twisted like a screw and forms a multiple irregularities on the metal plate.
  • the thermal conduction plate ( 51 a ) is preferably formed on the surface of the heat radiant pins formation ( 52 ) to increase the heat absorption and radiation.
  • the thermal conduction plate ( 51 a ) is preferably composed of 10-60 nanometer size of carbon nano tube and tourmaline catalyst.
  • the heat radiant pan ( 53 ) inhales the air and makes it go through the heat radiant pipes.
  • the temperature sensor ( 54 ) signals the heat radiant pan ( 53 ) when the temperature of the water capture-storage ( 10 ) has elevated to high.
  • the water level balancer( 60 ) connected to the main water supplying pipes (S) maintains the water level stored in the water capture-storage ( 10 ) and can be formed in many different ways.
  • the water level balancer ( 60 ) is composed of solenoid valves connected to the main water supplying pipes (S) and the water level sensor ( 62 ) inside the water capture-storage ( 10 ) that would send signals to open the solenoid valves ( 61 ) if the water level overrides the certain point.
  • the water level balancer ( 60 ) can be also made in the form of buoy in the toilet.
  • the reflux preventing filter unit ( 70 ) is to make a highly pure mixed gas by eliminating any debris from the hydrogen-oxygen mixed gas flowing from the capturing system ( 12 ) through the gas line ( 75 ). It ( 70 ) also plays a role in preventing the hydrogen-oxygen mixed gas flowing back to the capturing system ( 12 ).
  • the reflux preventing filter unit ( 70 ) includes water storage ( 71 ) where gas line ( 75 ) is connected and water is stored, catalyst storage ( 72 ) located on the upper part of the water storage ( 71 ) storing the catalysts, and the bentyulibu ( 73 ) which connects water storage ( 71 ) and catalyst storage ( 72 ).
  • the sub-capturing system ( 71 a ) is formed on the water storage ( 71 ) to catch the hydrogen-oxygen mixed gas traveling through the water.
  • the catalyst storage ( 72 ) stores catalysts such as tourmaline catalyst or platinum catalyst.
  • the catalyst storage ( 72 ) removes matters in chemical forms by catalysis.
  • the 1 st bentyulibu ( 73 ) mixes hydrogen gas and oxygen gas that goes through evenly and prevent the mixed gas transferred to the catalyst storage ( 72 ) from drawing back to the sub-capturing system ( 71 a ).
  • tiny water pipes are placed inside the bentyulibu ( 73 ), admiringly in a screw form.
  • the diameter of the tiny water pipes is preferably between 0.2 mm to 10 mm.
  • the water level sensing device ( 74 ) is installed inside the water storage ( 71 ).
  • the water level sensing device ( 74 ) measures the water used and make the water tank to provide water to the water storage ( 71 ).
  • the water level sensing device ( 74 ) can be made in various forms, such as buoy or sensor. Because water level sensor and the water tank is a technology used in the field, detailed explanation is omitted.
  • Debris removing filter ( 76 ) can also be set up inside the water storage ( 71 ). Debris removing filter ( 76 ) removes any foreign matters included in the hydrogen-oxygen mixed gas coming through the gas line ( 75 ).
  • any rubbish included in the hydrogen-oxygen gas flowing through the gas line ( 75 ) is removed by debris removing filter ( 76 ).
  • the filtered hydrogen-oxygen mixed gas elevates to the sub-capturing system ( 71 a ), unable to reflux to the gas line ( 75 ).
  • the mixed gas in the sub-capturing system ( 71 a ) become more evenly blended as it goes through the bentyulibu ( 73 ), and anything left behind is eliminated as it goes through the catalyst storage ( 72 ) becoming highly pure mixed gas.
  • Hydrogen-oxygen mixed gas generating system's mechanic will be explained according to the structure described above.
  • the hydrogen-oxygen mixed gas is gathered in the capturing system ( 12 ) through mixed gas centrifuge ( 11 ) and the gas in the capturing system ( 12 ) is used as combusting gas after going through the gas line ( 75 ), reflux preventing filter unit ( 70 ), and the nozzle ( 80 ).
  • Electrolysis in the electrode unit ( 20 ) produce massive amount of heat and the heat is transferred to the water capture-storage ( 10 ) through gas supplying pipes ( 40 ) ( 40 ′) elevating the temperature in the water capture-storage ( 10 ). Then the temperature of the heat radiant pipe ( 51 ) and the heat radiant pins formation ( 52 ) of the endothermic heat radiant system ( 50 ) penetrating through the water capture-storage and the temperature of the air inside the endothermic heat radiant system ( 50 ) elevates and goes outside the system. This means that natural heat radiation is conducted when the heat from the heat radiant pipe ( 51 ) and the heat radiant pins formation ( 52 ) transferred to the water capture-storage makes the air in the endothermic heat radiant system ( 50 ) making it go outside.
  • the heat radiant pan ( 53 ) is activated by temperature sensor ( 54 ), making immediate cooling possible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
US12/590,327 2008-11-07 2009-11-05 Hydrogen-oxygen mixed gas generating system Abandoned US20100264021A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0110362 2008-11-07
KR1020080110362A KR100891486B1 (ko) 2008-11-07 2008-11-07 수소산소 혼합가스 발생시스템

Publications (1)

Publication Number Publication Date
US20100264021A1 true US20100264021A1 (en) 2010-10-21

Family

ID=40757185

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/590,327 Abandoned US20100264021A1 (en) 2008-11-07 2009-11-05 Hydrogen-oxygen mixed gas generating system

Country Status (10)

Country Link
US (1) US20100264021A1 (ko)
EP (1) EP2184382A1 (ko)
JP (1) JP2010111945A (ko)
KR (1) KR100891486B1 (ko)
CN (1) CN101736355A (ko)
AU (1) AU2009230747A1 (ko)
BR (1) BRPI0905971A2 (ko)
RU (1) RU2009140165A (ko)
TW (1) TW201026900A (ko)
ZA (1) ZA200907809B (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110024695A1 (en) * 2009-02-18 2011-02-03 Boo-Sung Hwang Hydrogen-oxygen generating electrode Plate and method for manufacturing the same
US20130206586A1 (en) * 2012-02-14 2013-08-15 Epoch Energy Technology Corp. Apparatus for supplying oxyhydrogen gas
CN112096519A (zh) * 2020-11-11 2020-12-18 山东艾泰克环保科技股份有限公司 一种汽车发动机陈积碳清理用清碳机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100900914B1 (ko) * 2008-12-05 2009-06-03 황부성 수소산소 혼합가스 발생시스템
BR112015005093A2 (pt) * 2012-09-07 2017-09-26 Gamikon Pty Ltd aparelho para realização de eletrólise e geração calor
US10465300B2 (en) * 2014-10-16 2019-11-05 Hsin-Yung Lin Gas generator
KR102062986B1 (ko) * 2018-06-25 2020-01-07 (주)코메스 브라운 가스 발생 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346778A (en) * 1992-08-13 1994-09-13 Energy Partners, Inc. Electrochemical load management system for transportation applications
US20010018828A1 (en) * 1996-12-03 2001-09-06 Kanichi Kadotani Fluid temperature control device
US6712951B2 (en) * 1997-03-21 2004-03-30 Lynntech International, Ltd. Integrated ozone generator process
KR20080068164A (ko) * 2007-01-18 2008-07-23 삼성전자주식회사 액정 표시 장치

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849638B2 (ja) * 1980-12-01 1983-11-05 株式会社ア−チクリエイテイ−ブハウス 電気分解装置
JPS63254397A (ja) * 1987-04-09 1988-10-21 Riyuusei Sangyo Kk フイン内蔵型熱交換チユ−ブ
JPH09316676A (ja) * 1996-05-27 1997-12-09 Shinko Pantec Co Ltd 筒型電解セルおよび水素酸素発生装置
CN2327698Y (zh) * 1998-04-23 1999-07-07 董若西 强制冷却式氢氧发生装置
US6446942B1 (en) * 2001-05-02 2002-09-10 Ming-Kun Tsai Cooling tower
KR20020094396A (ko) * 2001-06-11 2002-12-18 신일균 가스 발생장치
JP2005089851A (ja) * 2003-09-19 2005-04-07 Union:Kk 電解槽の電解液温度安定装置
JP2005228855A (ja) * 2004-02-12 2005-08-25 Yamagishi Kogyo:Kk 放熱器
KR100684685B1 (ko) * 2005-03-17 2007-02-20 김춘식 수소 및 산소 혼합가스 발생장치
KR100780009B1 (ko) * 2006-12-05 2007-11-27 손복수 차량용 워터가스 발생장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346778A (en) * 1992-08-13 1994-09-13 Energy Partners, Inc. Electrochemical load management system for transportation applications
US20010018828A1 (en) * 1996-12-03 2001-09-06 Kanichi Kadotani Fluid temperature control device
US6712951B2 (en) * 1997-03-21 2004-03-30 Lynntech International, Ltd. Integrated ozone generator process
KR20080068164A (ko) * 2007-01-18 2008-07-23 삼성전자주식회사 액정 표시 장치

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110024695A1 (en) * 2009-02-18 2011-02-03 Boo-Sung Hwang Hydrogen-oxygen generating electrode Plate and method for manufacturing the same
US20130206586A1 (en) * 2012-02-14 2013-08-15 Epoch Energy Technology Corp. Apparatus for supplying oxyhydrogen gas
CN112096519A (zh) * 2020-11-11 2020-12-18 山东艾泰克环保科技股份有限公司 一种汽车发动机陈积碳清理用清碳机

Also Published As

Publication number Publication date
JP2010111945A (ja) 2010-05-20
RU2009140165A (ru) 2011-05-10
ZA200907809B (en) 2010-06-30
KR100891486B1 (ko) 2009-04-01
EP2184382A1 (en) 2010-05-12
AU2009230747A1 (en) 2010-05-27
TW201026900A (en) 2010-07-16
BRPI0905971A2 (pt) 2011-09-06
CN101736355A (zh) 2010-06-16

Similar Documents

Publication Publication Date Title
US20100155233A1 (en) Hydrogen-oxygen generating system
US20100264021A1 (en) Hydrogen-oxygen mixed gas generating system
US20110086280A1 (en) Systems for the on-demand production of power as a sole source or aiding other power sources, in the transportation and housing field.
CN101629302A (zh) 氢氧气体发生系统
CN103422112B (zh) 一种制备氢气并进行复合式供水供电的方法及系统
JP3171237U (ja) 水電解ガス混合燃料の生成装置
CN204281299U (zh) 一种基于甲醇水制氢系统的供暖系统
CN201373545Y (zh) 一种氢氧气热水器
CN105179931A (zh) 一种常压撬装式液态燃料气化设备
JP3912978B2 (ja) 水素貯蔵・供給システムおよび水素貯蔵・供給装置ならびに水素貯蔵・供給用触媒
AU2012202566A1 (en) Hydrogen-Oxygen mixed gas generating system
CN207865504U (zh) 一种集中供热用循环自动储水罐
CN205717363U (zh) 一种电解水环保燃气灶
WO2021135505A1 (zh) 一种紧凑型氢氧发生器
CN107954394A (zh) 制氢储氢装置
CN204649680U (zh) 一种用于测量氧还原反应的电解池
CN208632468U (zh) 一种应用于轻烃油气分离的过滤装置
AU2012202660A1 (en) A hydrogen-oxygen generating system
CN103019185A (zh) 无人值守传感器电源系统
CN2401793Y (zh) 以水电解的氢氧气为燃料的燃烧炉
WO2020087425A1 (zh) 基于氢循环的太阳能制氢、储氢与应用系统
CN201137202Y (zh) 坐便器的直热式液体加热装置
CN207620855U (zh) 一种高效热电联供汽轮机
CN214276183U (zh) 一种新能源供热转换装置
CN209893528U (zh) 一种壁挂炉

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION