Bizarre Patents
An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7665329 | Cryogenic air separation process with excess turbine refrigeration A process for carrying out cryogenic air separation wherein liquid oxygen is pressurized and vaporized against condensing feed air to produce oxygen gas product wherein excess plant refrigeration is generated such that the aggregate warm end temperature difference o... | 02/23/2010 |
| 7284395 | Cryogenic air separation plant with reduced liquid drain loss A cryogenic air separation plant and method of operation wherein, after an interruption in operation, liquid from the sump of a lower pressure column and liquid from the sump of a higher pressure column is passed to a condenser, preferably an argon column top conden... | 10/23/2007 |
| 7249469 | Method for separating a multicomponent stream This invention relates to a method for separating a stream having benzene, toluene and alkyl benzene, said method comprising: feeding the stream into a first distillation column, wherein the stream comprises between about 60 mole percent to about 85 mole percent tol... | 07/31/2007 |
| 7197894 | Integrated process and air separation process An integrated process and air separation process including the steps of: Work expanding at least one first pressurized gas 39 derived from a first process at a first site 1, using work generated by the expansion of the at least one pressurized gas to d... | 04/03/2007 |
| 7143606 | Combined air separation natural gas liquefaction plant In an integrated process and apparatus for the separation of air by cryogenic distillation and liquefaction of natural gas in which at least part of the refrigeration required to liquefy the natural gas is derived from at least one cryogenic air distillation plant c... | 12/05/2006 |
| 7114352 | Cryogenic air separation system for producing elevated pressure nitrogen A cryogenic air separation system for producing elevated pressure nitrogen wherein a portion of the nitrogen product fed to the product compressor downstream of the primary heat exchanger is withdrawn as refrigerant nitrogen from the product compressor, preferably f... | 10/03/2006 |
| 7086242 | Dehumidifying air-conditioning apparatus A dehumidifying air-conditioning apparatus comprises a pressurizer (4) for raising a pressure of a refrigerant, a condenser (5) for condensing the refrigerant to heat a high-temperature heat source fluid, and an evaporator (1) for evaporating th... | 08/08/2006 |
| 6948337 | Low temperature air fractionation system The invention relates to a low temperature air fractionation system comprising several modules consisting of at least one heat exchange unit, a pressure column and a low pressure column, in addition to the accessories belonging to the respective modules and at least... | 09/27/2005 |
| 6776005 | Air separation method and plant The pressurized waste nitrogen (11) from a column of an air separation unit (10) is sent, optionally after being compressed, to a combustion chamber (15) where it is heated, to a turbine (17) in which it is expanded and again to the combu... | 08/17/2004 |
| 6568208 | System and method for introducing low pressure reflux to a high pressure column without a pump A method and system for producing nitrogen and/or oxygen by air separation. The system includes at least one high pressure column, at least one low pressure column, and a reboiler-condenser. The method includes generating a high pressure nitrogen stream f... | 05/27/2003 |
| 6499313 | Process and apparatus for generating high-purity nitrogen by low-temperature fractionation of air High-purity nitrogen is generated by low-temperature fractionation of air in a rectification system for nitrogen/oxygen separation having at least a first rectifier column (4). Cycle nitrogen (24) in gas form is removed from the upper region of the first ... | 12/31/2002 |
| 6434973 | Process and unit for the production of a fluid enriched in oxygen by cryogenic distillation A plant for the separation of air includes at least three columns, including an auxiliary column and two other columns, of which at least one is fed with air and of which that operating at the lowest pressure operates between 2 and 10 bar. A flow between ... | 08/20/2002 |
| 6344361 | Method of detecting the presence of impurities, unit and method for vaporizing liquid, and double air-distillation column A film-type vaporizer in a vaporization enclosure, for example the upper column of a double air-distillation column, is associated with a measurement and analysis box where a polished surface and a spillway reconstruct the flow of liquid in the vaporizer ... | 02/05/2002 |
| 6314755 | Double column system for the low-temperature fractionation of air The process and the apparatus serve for the low-temperature fractionation of air in a rectification system that has at least one pressure column and one low-pressure column. Feed air is compressed to a first pressure p1 in a first compressor, p... | 11/13/2001 |
| 6295838 | Cryogenic air separation and gas turbine integration using heated nitrogen An integrated cryogenic air separation gas turbine system wherein heat of compression within the feed air is provided to nitrogen produced in the cryogenic air separation plant and the heated nitrogen is provided to a gas turbine along with combustion rea... | 10/02/2001 |
| 6286336 | Cryogenic air separation system for elevated pressure product A cryogenic air separation system particularly useful for producing elevated pressure product wherein additional reflux is generated by a heat pump circuit operating between the upper portion and an intermediate location of the lower pressure column of a ... | 09/11/2001 |
| 6009723 | Elevated pressure air separation process with use of waste expansion for compression of a process stream The present invention relates to an elevated pressure air separation cryogenic process wherein feed air is compressed, treated to remove water and carbon dioxide, cooled to cryogenic temperature in a main heat exchanger having a cold end and a warm end an... | 01/04/2000 |
| 5924307 | Turbine/motor (generator) driven booster compressor A compressor assembly for cryogenic gas separation wherein the assembly comprises a compressor, an expansion turbine and an electric motor integrally connected via a gear drive, and processes for using the compressor assembly.... | 07/20/1999 |
| 5893276 | Air separation Air is separated in a double rectification column comprising a higher pressure rectification column, a lower pressure rectification column, and a condenser-reboiler placing the column in indirect heat exchange relationship with the column. A stream of pre... | 04/13/1999 |
| 5806342 | Cryogenic rectification system for producing low purity oxygen and high purity oxygen A cryogenic rectification system for producing low purity oxygen and high purity oxygen employing an offset dual column with bottom reboil of the lower pressure column effected by condensing feed air, with intermediate reboil of the lower pressure column ... | 09/15/1998 |
| 5806341 | Method and apparatus for air separation Air is compressed in an arrangement of compressors. A first flow of the thus compressed air flows through a main heat exchanger from its warm end to its cold end and is liquefied by passage through a valve. Two second stream of compressed air are taken. O... | 09/15/1998 |
| 5794458 | Method and apparatus for producing gaseous oxygen A method and apparatus for making gaseous oxygen at a delivery pressure in a single column oxygen generator. In accordance with the method and apparatus, a column bottoms stream composed of the product is pumped to the delivery pressure and then vaporized... | 08/18/1998 |
| 5704229 | Process and apparatus for producing nitrogen An air separation process and apparatus employing a single column nitrogen generator. Part of the incoming air stream to be separated is expanded and combined with a waste stream. After partial warming of the combined stream, the combined stream is expand... | 01/06/1998 |
| 5697229 | Process to produce nitrogen using a double column plus an auxiliary low pressure separation zone A process is set forth for the cryogenic distillation of an air feed to produce nitrogen, particularly high pressure nitrogen of various purity, varying from low purity (up to 98% nitrogen) to ultra-high purity (less than 1 part per billion of oxygen). Th... | 12/16/1997 |
| 5678426 | Separation of fluid mixtures in multiple distillation columns A fluid mixture is separated by distillation in a two column system in which a portion of the feed is prefractionated in a first column having at least one separation stage above the feed and the prefractionator bottoms provides feed to a second column op... | 10/21/1997 |
| 5655388 | Cryogenic rectification system for producing high pressure gaseous oxygen and liquid product A cryogenic rectification system wherein liquid oxygen from a cryogenic air separation plant is pressurized and then vaporized in a high pressure liquefier producing product high pressure oxygen gas and generating liquid nitrogen for enhanced liquid produ... | 08/12/1997 |
| 5651271 | Process for the separation of a gas mixture by cryogenic distillation In order to precool a flow of gas to be distilled, before a purification stage, it is sent into an exchanger (5) where it is cooled by heating a flow of refrigerant (13B). At least a part of this refrigerant has its pressure reduced before cooling the unp... | 07/29/1997 |
| 5600970 | Cryogenic rectification system with nitrogen turboexpander heat pump A cryogenic rectification system which can operate at elevated pressure without encountering a severe separation efficiency burden wherein additional column reflux is generated by an indigenous nitrogen heat pump circuit.... | 02/11/1997 |
| 5515688 | Process and installation for the production of oxygen and/or nitrogen under pressure Process and installation for the production of gaseous oxygen and/or gaseous nitrogen under pressure, of the type in which the air is distilled in a double distillation column (10) comprising a low pressure column (12) operating under a low pressure, and ... | 05/14/1996 |
| 5513497 | Separation of fluid mixtures in multiple distillation columns A fluid mixture is separated by distillation in a two column system in which the feed is prefractionated in a first column having at least one separation stage above the feed and the prefractionator bottoms provides feed to a second column operating at a ... | 05/07/1996 |
| 5507148 | Air separation method and apparatus to produce nitrogen An air separation method and apparatus for producing nitrogen is provided in which oxygen enriched liquid, produced as a column bottoms of a distillation column, is partially vaporized and phase separated. The vapor phase is expanded to provide refrigerat... | 04/16/1996 |
| 5463869 | Integrated adsorption/cryogenic distillation process for the separation of an air feed An integrated adsorption/cryogenic distillation process is set forth for the separation of an air feed. The air feed is passed through a vacuum swing adsorption (VSA) unit to remove impurities comprising water and carbon dioxide which will freeze out at c... | 11/07/1995 |
| 5461872 | Air separation method and apparatus An air separation method and apparatus in which air is separated by a low temperature rectification process having cooling and rectification stages for cooling air to a temperature suitable for its rectification and for distilling or fractionating the air... | 10/31/1995 |
| 5460003 | Expansion turbine for cryogenic rectification system A turboexpander, particularly suited for use in a cryogenic rectification system, comprises a center housing rotatably supporting an elongated shaft to opposite ends of which are mounted a turbine wheel within a turbine housing and a compressor wheel with... | 10/24/1995 |
| 5442925 | Process for the cryogenic distillation of an air feed to produce a low to medium purity oxygen product using a single distillation column system A process is set forth for the cryogenic distillation of an air feed to produce a low to medium purity oxygen product using a single distillation column system. The air feed is partially condensed into a crude liquid oxygen stream and a remaining nitrogen... | 08/22/1995 |
| 5402647 | Cryogenic rectification system for producing elevated pressure nitrogen A cryogenic rectification system for producing large quantities of elevated pressure nitrogen employing an additional column operating at a pressure intermediate to that of higher and lower pressure columns, thereby optimizing nitrogen recovery by improvi... | 04/04/1995 |
| 5363657 | Single column process and apparatus for producing oxygen at above-atmospheric pressure A process and apparatus for separating air in which a refrigerant stream produced at the top of a single column is expanded with the performance of work. Such expansion can be carried out in an expansion machine coupled to a recycle compressor by an energ... | 11/15/1994 |
| 5363656 | Ultra-high purity nitrogen and oxygen generator A generator produces ultra-high purity nitrogen and ultra-high purity oxygen simultaneously by the liquefaction and rectification of feed air. Feed air is rectified in a first rectification column, and nitrogen gas separated to the top of that column is l... | 11/15/1994 |
| 5337571 | Process and installation for the production of oxygen gas under high pressure by air distillation In this nitrogen-cycle installation, the cycle compressor provides a supply of high-pressure nitrogen which serves to heat oxygen supplied in liquid form from the reservoir of a low-pressure column and raised in pressure by a pump to the desired high prod... | 08/16/1994 |
| 5309721 | Air separation An improvement to a gaseous oxygen cycle in which refrigeration is provided by two expansion turbines each fed with nitrogen. In addition, some nitrogen is recompressed, returned though the main heat exchanger, condensed and used to form a liquid nitrogen... | 05/10/1994 |
