Bizarre Patents
Decorative Jeweled Wheel Cover
An improved wheel is provided wherein decorative items such as gem stones are embedded in either the wheel surface, a special mounting section attached to the wheel surface, or to a spoke strap that wraps around each spoke and positions embedded gem stones on the outside surface of the spoke.
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| Number | Title | Issue Date |
| 7370494 | Method and installation for producing, in gaseous form and under high pressure, at least one fluid chosen from oxygen, argon and nitrogen by cryogenic distillation of air A process and apparatus for highly efficient production of industrial gases by the cryogenic distillation of air, wherein a feed stream of compressed air, is supercharged to high pressure, cooled, and mixed with various recycle streams of supercharged air, to regula... | 05/13/2008 |
| 7293425 | Thermo siphon chiller refrigerator for use in cold district In order to provide a thermo-siphon chiller refrigerator for use in cold districts which performs natural refrigerant-circulation refrigerating cycle and also can perform a forced refrigerant-circulation refrigerating cycle when outside air temperature is high by us... | 11/13/2007 |
| 7272954 | Low temperature air separation process for producing pressurized gaseous product An apparatus and process for producing pressurized gaseous product by air separation. A compressed air stream is cooled in an exchanger to form a compressed cooled air stream. The stream is then cryogenically compressed in a first compressor to form a first pressuri... | 09/25/2007 |
| 7266976 | Vertical heat exchanger configuration for LNG facility LNG facility employing one or more vertical core-in-kettle heat exchangers to cool natural gas via indirect heat exchange with a refrigerant. The vertical core-in-kettle heat exchangers save plot space and can be use to reduce the size of cold boxes employed in the ... | 09/11/2007 |
| 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 |
| 7225637 | Integrated air compression, cooling, and purification unit and process Process and apparatus for optimization of integrated air separation systems. In an integrated process for the compression, cooling, and purification of air, an adiabatic compressor compresses an air stream to produce a compressed air stream. The compressed air strea... | 06/05/2007 |
| 6962062 | Process and apparatus for the separation of air by cryogenic distillation A method for separating air by cryogenic distillation. A first compressor compresses air to a first pressure, and sends part of that air to a second compressor which compresses that part to a second pressure. Part of the air at the second pressure is cooled in a hea... | 11/08/2005 |
| 6536234 | Three column cryogenic air separation system with dual pressure air feeds A three column cryogenic rectification system for producing at least one of oxygen and nitrogen employing a medium pressure column which is operating at a pressure between the operating pressures of the higher and lower pressure columns, and which receive... | 03/25/2003 |
| 6385996 | Process and installation for separation of air by cryogenic distillation In an apparatus for the separation of air by cryogenic distillation, the overhead gas of a mixing column is sent to the passages for warming a bottom reboiler of the low-pressure column of a double column fed with air to be distilled. The production of ox... | 05/14/2002 |
| 6354105 | Split feed compression process for high recovery of ethane and heavier components A process for enhancing recovery of ethylene, ethane and heavier components using a cryogenic distillation column which involves dividing the feed gas into a first gaseous stream and a main gaseous stream. The first gaseous stream is compressed and cooled... | 03/12/2002 |
| 6293126 | Air separation A double column air separation method in which a first stream of compressed air is cooled by passage through a main heat exchanger from its warm end countercurrently to a nitrogen stream withdrawn from the top of a lower pressure rectification column. The... | 09/25/2001 |
| 6279345 | Cryogenic air separation system with split kettle recycle A cryogenic air separation system, which may be used to produce ultra high purity nitrogen or ultra high purity oxygen, wherein kettle liquid is vaporized in two steps using a split kettle top condenser and vapor from the first step compressed and then re... | 08/28/2001 |
| 6182471 | Cryogenic rectification system for producing oxygen product at a non-constant rate A cryogenic air separation system wherein product oxygen may be produced effectively at a higher production rate and at a lower production rate than the nominal production rate by employing a liquid oxygen storage tank and, in addition, an oxygen-enriched... | 02/06/2001 |
| 6141990 | Process and plant for separating air by cryogenic distillation In order to allow more flexible operation of a column for separating air by cryogenic distillation, a first air stream (6) exchanges heat with a liquid (16) which vaporizes, while a second air stream (7, 7A) is drawn off from an intermediate level in the ... | 11/07/2000 |
| 6141989 | Air separation Air is separated in a double rectification column comprising a higher pressure rectification column, a lower pressure rectification column, and a first condenser-reboiler, of which the condensing passages communicate with an upper region of the higher pre... | 11/07/2000 |
| 6125656 | Cryogenic rectification method for producing nitrogen gas and liquid nitrogen A cryogenic rectification method wherein both nitrogen gas and liquid are efficiently produced from air employing one or two columns wherein refrigeration to drive the cryogenic separation is provided by a, preferably closed loop, multicomponent refrigera... | 10/03/2000 |
| 6112549 | Aromatics and/or heavies removal from a methane-rich feed gas by condensation and stripping A process and associated apparatus for removing aromatics and/or higher molecular weight hydrocarbons from a methane-based gas stream comprising the steps of (a) condensing a minor portion of the methane-based gas stream thereby producing a two-phase stre... | 09/05/2000 |
| 6062044 | Method and plant for producing an air gas with a variable flow rate A plant which, when used to produce pressurized oxygen gas, includes a switch, e.g. a liquid oxygen/liquid air switch, for meeting relatively long-term peak demand as well as short-term, high-amplitude peak demand, and a circuit (13,30) for compressing ox... | 05/16/2000 |
| 5878598 | Air separation Air is separated into oxygen and nitrogen in a double rectification column comprising a higher pressure rectification column and a lower pressure rectification column. Liquid nitrogen reflux for the separation is provided by condensing nitrogen vapor take... | 03/09/1999 |
| 5832748 | Single column cryogenic rectification system for lower purity oxygen production A single column cryogenic rectification system for producing lower purity oxygen wherein a major portion of the feed air is partially condensed in the column reboiler, the resulting vapor turboexpanded and then successively condensed in one or more vertic... | 11/10/1998 |
| 5813251 | Process and apparatus for low-temperature separation of air The process and the apparatus are used for low-temperature separation of air in a rectifying column system that has a preliminary separation column (10) and a low-pressure column (20). Feed air (1, 3) is introduced (4, 6, 7, 8, 41) into preliminary separa... | 09/29/1998 |
| 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 |
| 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 |
| 5669236 | Cryogenic rectification system for producing low purity oxygen and high purity oxygen A cryogenic rectification system employing an additional rectifying section in parallel with the lower section of the lower pressure column of a double column for producing product oxygen at both low and high purity.... | 09/23/1997 |
| 5669237 | Method and apparatus for the low-temperature fractionation of air For the method, air (103, 104) is fractionated in a medium-pressure column (6) and a low-pressure column (5). The sump heating (3) of the low-pressure column (5) is carried out with a second airflow (204), which is liquefied at the same time. An intermedi... | 09/23/1997 |
| 5664438 | Cryogenic side column rectification system for producing low purity oxygen and high purity nitrogen A cryogenic rectification system for producing low purity oxygen and high purity nitrogen, preferably at elevated pressure, wherein nitrogen-rich vapor from a higher pressure column is turboexpanded and condensed against lower pressure column intermediate... | 09/09/1997 |
| 5644934 | Process and device for low-temperature separation of air The process and the device are used for low-temperature separation of air. A first split stream of compressed and purified air is cooled, fed to a main rectifying system and separated there into liquid oxygen and gaseous nitrogen. A liquid product fractio... | 07/08/1997 |
| 5582032 | Ultra-high purity oxygen production A process for producing an ultra-high purity fluid product comprising the steps of collecting in the lower portion of a cryogenic fractionation zone an ultra-high purity fluid product; providing reboil to said fractionation zone by condensing a portion of... | 12/10/1996 |
| 5471842 | Cryogenic rectification method and apparatus A cryogenic rectification method for producing a product stream from a gaseous mixture having higher and lower volatility components and heavy impurities. In accordance with the method, the mixture is separated by a cryogenic rectification process employi... | 12/05/1995 |
| 5408831 | Process and installation for the production of gaseous oxygen under pressure Process and apparatus for the production of gaseous oxygen under median pressure with a double distillation column (5). The low pressure column (7) of the double column (5)is operated under a pressure substantially greater than atmospheric pressure and sl... | 04/25/1995 |
| 5385024 | Cryogenic rectification system with improved recovery A cryogenic rectification system wherein nonproduct fluid from a cryogenic rectification plant is compressed and mixed with incoming feed at an intermediate temperature, and the resulting mixture passed into the cryogenic rectification plant enabling prod... | 01/31/1995 |
| 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 |
| 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 |
| 5228297 | Cryogenic rectification system with dual heat pump A cryogenic air separation system wherein high pressure oxygen is transition-warmed against both transition-cooling feed air and transition-cooling nitrogen, supplying added reflux for the air separation and enabling column operation at higher pressures w... | 07/20/1993 |
| 4966002 | Process and apparatus for producing nitrogen from air Process for the recovery of nitrogen from air in which gaseous air is compressed, cooled and optionally purified in a heat exchanger, and then distilled to obtain pure gaseous nitrogen overhead and an oxygen enriched liquid bottoms, wherein all of the bot... | 10/30/1990 |
| 4843828 | Liquid-vapor contact method and apparatus In a distillation column used in the separation of air, a liquid stream of composition intermediate those occuring at the top and bottom is taken from the column and is at least partial reboiled in an external heat exchanger by heat exchange with a heat e... | 07/04/1989 |
| 4822395 | Air separation process and apparatus for high argon recovery and moderate pressure nitrogen recovery Process and apparatus to produce argon at high recovery with nitrogen at higher than conventional pressure comprising three columns wherein first column bottoms are passed into the second column, second column bottoms drive a third column top condenser, a... | 04/18/1989 |
| 4575388 | Process for recovering argon A process for recovering argon in which a crude argon column is supplied with an argon feed gas containing a larger proportion of oxygen from a double rectifier and is cooled at its head portion with or without liquid air from a sump of the lower column o... | 03/11/1986 |
| 4507134 | Air fractionation method A method of fractionation of air which includes the steps of feeding material air compressed by a withdrawing liquefied oxygen from the bottom of a crude argon column, pressurized under its own weight, and gasifying the liquefied oxygen by a reversible he... | 03/26/1985 |
| 4448595 | Split column multiple condenser-reboiler air separation process A cryogenic process to efficiently produce large quantities of nitrogen gas at elevated pressure and optionally some oxygen by use of a split column and multiple condenser-reboilers.... | 05/15/1984 |
