Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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 |
| 6848269 | Process and apparatus for the recovery of krypton and/or xenon Krypton and/or xenon is separated crudely from a mixture comprising oxygen and at least one rare gas selected from the group consisting of krypton and xenon in a process comprising feeding said mixture or a mixture derived therefrom to a rare gas recovery system and... | 02/01/2005 |
| 6829907 | Process and apparatus for the recovery of krypton and/or xenon Krypton and/or xenon is separated crudely from a mixture comprising oxygen and at least one rare gas selected from the group consisting of krypton and xenon in a process comprising feeding said mixture or a mixture derived therefrom to a rare gas recovery system and... | 12/14/2004 |
| 6735980 | Recovery of krypton and xenon A method for recovering krypton and xenon from air comprises (a) separating an air feed stream into oxygen-enriched and nitrogen-enriched product streams; (b) reacting the oxygen-rich product stream with a hydrocarbon feed in a synthesis gas generation process to yi... | 05/18/2004 |
| 6694775 | Process and apparatus for the recovery of krypton and/or xenon Krypton and/or xenon is separated crudely from a mixture comprising oxygen and at least one rare gas selected from the group consisting of krypton and xenon in a process comprising feeding said mixture or a mixture derived therefrom to a rare gas recovery... | 02/24/2004 |
| 6662593 | Process and apparatus for the cryogenic separation of air Liquid oxygen ("LOX") product and a krypton- and xenon-enriched liquid product is produced from the cryogenic separation of air using a cryogenic distillation system. The process comprises separating feed air in the main distillation system into nitrogen-... | 12/16/2003 |
| 6612129 | Process and apparatus for producing krypton and/or xenon by low-temperature fractionation of air In a process and apparatus used to produce krypton and/or xenon by low-temperature fractionation of air, compresses and clean charge air (1) is introduced into a rectification system for nitrogen-oxygen separation. The rectification system includes at lea... | 09/02/2003 |
| 6418753 | Method and device for cryogenic air separation The process and the apparatus serve for the low-temperature fractionation of air. Compressed and prepurified feed air (3, 5) is introduced into a rectification system for nitrogen-oxygen separation which has a pressure column (6). At least a part of the c... | 07/16/2002 |
| 6378333 | Cryogenic system for producing xenon employing a xenon concentrator column A system for producing xenon concentrate suitable for further refining wherein a xenon concentrator column processes liquid from the sump of a lower pressure column and additionally produces oxygen gas for recovery or recycle to the lower pressure column.... | 04/30/2002 |
| 6351970 | Method for extracting xenon The invention relates to a method for extracting xenon and eventually also krypton from a liquid oxygen (LOX) charge, as it accrues in a cryogenic air separation system (LZA) during a rectification of the air, mostly as a bottom product of a low-pressure,... | 03/05/2002 |
| 6327873 | Cryogenic rectification system for producing ultra high purity oxygen A cryogenic rectification system comprising an upstream krypton/xenon knockout column and a downstream oxygen upgrader column wherein the knockout column processes a crude feed for removal of heavy components including hydrocarbons and the upgrader column... | 12/11/2001 |
| 6314757 | Cryogenic rectification system for processing atmospheric fluids A cryogenic rectification system comprising a rare gas concentrator column for producing a liquid having an enhanced concentration of krypton and xenon, and which processes atmospheric fluids and also produces gaseous oxygen and liquid nitrogen.... | 11/13/2001 |
| 6220054 | Separation of air Air is separated in a main rectification column comprising a higher pressure column, a lower pressure column and a condenser-reboiler replacing the higher pressure column in heat exchange relationship with the lower pressure column. A first liquid oxygen ... | 04/24/2001 |
| 6212905 | Production of ethylene using high temperature demethanization This invention comprises a method of producing ethylene rich product streams from a pressurized charge gas mixture of olefins and other components received from olefin generation/preparation processes. The method of this invention may eliminate the need f... | 04/10/2001 |
| 6199385 | Polarized gas accumulators and heating jackets and associated gas collection and thaw methods and polarized gas products Methods of collecting, thawing, and extending the useful polarized life of frozen polarized gases include heating a portion of the flow path and/or directly liquefying the frozen gas during thawing. A polarized noble gas product with an extended polarized... | 03/13/2001 |
| 6164089 | Method and apparatus for recovering xenon or a mixture of krypton and xenon from air Method and apparatus for recovering xenon or a mixture of xenon and krypton from air processed in a cryogenic air separation plant. An oxygen rich stream containing xenon and or krypton and xenon together with other trace impurities is subjected to a carb... | 12/26/2000 |
| 6134914 | On-line recovery of xenon from anaesthetic gas A process is disclosed for separating a component from a gaseous mixture, in particular for separating xenon from the breathing gas exhaled by an anaesthetized patient. The disclosed process has the following steps: the gaseous mixture is brought into con... | 10/24/2000 |
| 6029473 | Process and installation for filling a reservoir under pressure A reservoir is filled under pressure with a gas, by introducing a quantity of a gas into an intermediate receptacle (3), liquefying this quantity of gas, upon its introduction into the intermediate receptacle, by heat exchange with a refrigerant fluid, re... | 02/29/2000 |
| 5934103 | Method and apparatus for production of spin-polarized medical-grade xenon 129 gas by laser optical pumping Spin-polarized xenon gas is provided in medical-grade purity for use as a contrast medium in MRI studies by use of collision-induced transfer of spin energy to the xenon gas from laser-pumped spin-polarized Rb gas. The Rb gas is provided by thermally vapo... | 08/10/1999 |
| 5860295 | Cryogenic accumulator for spin-polarized xenon-129 A method and apparatus for accumulation of hyperpolarized 129 Xe is disclosed. The method and apparatus of the invention enable the continuous or episodic accumulation of flowing hyperpolarized 129 Xe in frozen form. The method also ... | 01/19/1999 |
| 5809801 | Cryogenic accumulator for spin-polarized xenon-129 A method and apparatus for accumulation of hyperpolarized 129 Xe is disclosed. The method and apparatus of the invention enable the continuous or episodic accumulation of flowing hyperpolarized 129 Xe in frozen form. The method also ... | 09/22/1998 |
| 5642625 | High volume hyperpolarizer for spin-polarized noble gas A method and apparatus for hyperpolarization of flowing noble gases is disclosed, including means for hyperpolarization of noble gases in a continuous flow arrangement. Noble gases such as xenon-129 and helium-3 can be hyperpolarized using the disclosed m... | 07/01/1997 |
| 5313802 | Process to produce a krypton/xenon enriched stream directly from the main air distillation column A process is set forth for producing a krypton/xenon enriched stream directly from the main air distillation column in a cryogenic air separation process. A column bypass is suggested in the bottom few trays of the low pressure column in order to concentr... | 05/24/1994 |
| 5309719 | Process to produce a krypton/xenon enriched stream from a cryogenic nitrogen generator A process is set forth for producing a krypton/xenon enriched stream from a cryogenic nitrogen generator. Distillation of the oxygen product stream at the top of the low pressure column is suggested in order to concentrate krypton and xenon while rejectin... | 05/10/1994 |
| 5186007 | Controlled process for xenon concentration The present invention relates to feeding liquid oxygen from the main condenser of the upper rectifying column of an air liquefying/separating unit into a xenon condensing column. The liquid oxygen is evaporated in varying amounts in correspondence to fluc... | 02/16/1993 |
| 5122173 | Cryogenic production of krypton and xenon from air The present invention relates to a process for the production of krypton and xenon from a cryogenic air separation unit. The present invention simultaneously concentrates krypton and xenon while rejecting more than 90% of the methane present in the feed s... | 06/16/1992 |
| 5069698 | Xenon production system Method and apparatus for improving xenon recovery wherein a liquid containing krypton and xenon is removed from a cryogenic rectification facility at a defined flowrate which selectively improves xenon recovery and is provided into a facility having rare ... | 12/03/1991 |
| 5067976 | Cryogenic process for the production of an oxygen-free and methane-free, krypton/xenon product The present invention relates to a process for the production of kryton and xenon by using an oxygen-free vapor stream to strip a liquid stream containing oxygen, krypton, methane, and xenon of methane and oxygen. This is accomplished by properly controll... | 11/26/1991 |
| 5063746 | Cryogenic process for the production of methane-free, krypton/xenon product The present invention relates to a process for the production of kryton and xenon by using a vapor stream containing greater than 2% oxygen to strip a liquid stream containing oxygen, krypton, methane and xenon of methane. This is accomplished by properly... | 11/12/1991 |
| 5039500 | Process for producing xenon The present invention relates to a process for producing high purity xenon safely at a high yield from liquid oxygen in a main condenser of an air separating unit. The present invention involves a process for concentrating and recovering xenon by gasifyin... | 08/13/1991 |
| 4831829 | Krypton based adsorption type cryogenic refrigerator Krypton and a monolithic porous carbon such as Saran carbon are used respectively as the sorbate and sorbent of an adsorption type refrigerator to improve refrigeration efficiency and operational longevity.... | 05/23/1989 |
| 4805412 | Krypton separation Air separation, in particular apparatus and method for reducing the loss of krypton and xenon during air separation by cryogenic distillation. The invention provides a method of separating air by cryogenic distillation, including forming a first liquid ox... | 02/21/1989 |
| 4647299 | Process to produce an oxygen-free krypton-xenon concentrate A method to concentrate krypton and xenon in a substantially oxygen-free liquid employing a two-section exchange column, the top section of which is refluxed by a substantially rare gas-free liquid.... | 03/03/1987 |
| 4574006 | Process to produce a krypton-xenon concentrate from a liquid feed A process which produces a krypton-xenon concentrate from a liquid feed while also producing a liquid product substantially free of rare gases. The process employs an integral heat pump circuit to carry out the separation in an energy-efficient manner.... | 03/04/1986 |
| 4568528 | Process to produce a krypton-xenon concentrate and a gaseous oxygen product A krypton-xenon concentration process which also produces substantially rare gas-free oxygen gas while requiring a stripping column substantially smaller than is required by conventional process wherein feed liquid is provided directly to a reboiling zone... | 02/04/1986 |
| 4421536 | Process for producing krypton and xenon A process for producing krypton and xenon. The concentrations of krypton and xenon contained in liquid oxygen are not highly increased in a concentrating column to produce concentrated liquid having a relatively low concentration of methane, which is stri... | 12/20/1983 |
| 4417909 | Gas separation process Method and apparatus for separating gases having different partial pressures at a given temperature includes introducing a multi-component gas mixture into a chamber, reducing the temperature therein to solidify and liquefy all components. At least one co... | 11/29/1983 |
| 4401448 | Air separation process for the production of krypton and xenon An air separation process which safely and efficiently produces krypton and xenon by concentrating these rare gases in nitrogen and in a manner such that the performance of the associated main air separation plant is minimally impacted.... | 08/30/1983 |
| 4384876 | Process for producing krypton and Xenon A process for producing krypton and xenon in which relation to the air separation plant is restricted to receipt of liquid oxygen as raw material of krypton and xenon and return of liquid oxygen produced by the process. Heat which is necessary for rectifi... | 05/24/1983 |
| 4369048 | Method for treating gaseous effluents emitted from a nuclear reactor A method is disclosed herein for treating the gaseous effluents emitted from a nuclear reactor, said method being adaptable for treating either gaseous effluents produced during normal reactor operations or combustible and fission product gases released a... | 01/18/1983 |
| 4277363 | Method for processing a mixture of air and rare gases, especially xenon and krypton The method for processing a mixture of air and rare gases consisting especially of xenon and krypton which are at least partially radioactive and especially for processing gaseous effluents arising from the reprocessing of irradiated fuels comprises a ste... | 07/07/1981 |
