Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7431900 | Hydrogen peroxide vapor system with replaceable desiccant cartridge A hydrogen peroxide vapor generation unit (10) receives hydrogen peroxide and water solution at an interface (20) and interconnects with an air dryer (14) by way of nipples (72, 92). In one embodiment, the dryer includes a clamping assemb... | 10/07/2008 |
| 7381244 | Apparatus and process for air cleaning A process and an apparatus for removal of radon from indoor air. The process having the step of contacting indoor air with an adsorbent, that is a silver-exchanged zeolite. The apparatus for the removal of radon from indoor air comprises a silver exchanged zeolite. | 06/03/2008 |
| 7326821 | Removal of oxygenate from an olefin stream This invention is to a process for removing dimethyl ether from an olefin stream. The process includes contacting the olefin stream with a molecular sieve that has improved capacity to adsorb the dimethyl ether from the olefin stream. The molecular sieve used to rem... | 02/05/2008 |
| 7309378 | Syngas purification process The present invention relates to a process for purifying a syngas of the CO/H2 or N2/H2 type, which consists in removing CO2 and possibly other gaseous impurities (water, etc.) before the gas undergoes a cryogenic process.... | 12/18/2007 |
| 7306647 | Mixed matrix membrane with mesoporous particles and methods for making and using the same A mixed matrix membrane for separating gas components from a mixture of gas components is disclosed. The membrane comprises a continuous phase polymer with inorganic porous particles, preferably molecular sieves, interspersed in the polymer. The polymer has a CO | 12/11/2007 |
| 7169212 | Gas separation process This invention relates to gas separation processes using a Li-rho zeolite, in particular to an air separation process where the Li-rho zeolite is an oxygen selective adsorbent. ... | 01/30/2007 |
| 7153345 | Sulfur oxide adsorbents and emissions control High capacity sulfur oxide absorbents utilizing manganese-based octahedral molecular sieve (Mn—OMS) materials are disclosed. An emissions reduction system for a combustion exhaust includes a scrubber 24 containing these high capacity sulfur oxide absorbents... | 12/26/2006 |
| 7041155 | Selective adsorbent for nitrogen and method for separating air using the same A nitrogen selective adsorbent comprises a zeolite of a faujasite crystalline structure containing Li+ and at least one of NH+ and H+ as essential cations, and has a nitrogen adsorption characteristic represented by specific correlat... | 05/09/2006 |
| 7037360 | Adsorbent for heat utilization system, adsorbent for regenerator system, regenerator system comprising the adsorbent, ferroaluminophosphate and method for production thereof An adsorbent for regenerator systems, to a heat utilization system and a regenerator system that comprise the adsorbent, and to a ferroaluminophosphate and a method for production thereof. More precisely, the invention relates to an adsorbent favorable for regenerat... | 05/02/2006 |
| 7011695 | Barium-and calcium-based zeolitic adsorbent for gas purification in particular air Zeolite adsorbent, and method of production, exchanged with calcium and barium cations, for purifying or separating a gas or gas mixture, in particular air, so as to remove therefrom the impurities found therein, such as hydrocarbons and nitrogen oxides (Nx | 03/14/2006 |
| 6984765 | Separation of methanol, ethanol and/or dimethyl ether from hydrocarbon mixtures The present invention is a separation process for producing a methanol, ethanol and/or dimethyl ether stream from a first stream containing C3+ hydrocarbons. The first stream comprises C3+ hydrocarbons, methanol, ethanol and/or dimethyl ether. ... | 01/10/2006 |
| 6962617 | Method of removing mercury from exhaust gases Efficient removal of mercury from the exhaust gases of an industrial process or combustion process can be achieved using an adsorbent that can be regenerated by a simple and efficient method. The mercury is contacted with a sorbent material, the sorbent material bei... | 11/08/2005 |
| 6955710 | On-board oxygen production system for aircraft, in particular long-range aircraft Method and system on board an aircraft for the production of an oxygen-enriched gas stream from an oxygen/nitrogen gas mixture, particularly air, comprising at least one adsorber containing at least one adsorbent for adsorbing at least some of the nitrogen molecules... | 10/18/2005 |
| 6837917 | Process for the removal of ethylene oxide from air A process for removal of ethylene oxide (EO) from ambient air laden with EO is passed through a zeolite-based removal media, which preferrably consists of the acid form of zeolite ZSM-5, herein referred to as “H-ZSM-5.” The process described herein may be applie... | 01/04/2005 |
| 6824590 | Use of lithium-containing fau in air separation processes including water and/or carbon dioxide removal A process for separating a feed gas into at least one product gas includes: (a) providing a gas separation apparatus with at least one adsorption layer including a lithium-exchanged FAU adsorbent having water desorption characteristics, defined by drying curves, sim... | 11/30/2004 |
| 6818333 | Thin zeolite membrane, its preparation and its use in separation Described is a supported zeolite membrane that consists of a zeolite/substrate composite layer that exhibits, in the n-butane/isobutane separation, a permeance of n-butane of at least 6.10−7 mol/m2.s.Pa and a selectivity of at least 250 at th... | 11/16/2004 |
| 6806219 | Exchanged zeolites X, in particular exchanged with lithium, their process of preparation and their use as adsorbents of nitrogen in the separation of the gases of the air The present invention relates to zeolites X, most of the exchangeable sites of which are occupied by lithium and di- and/or trivalent cations, having an improved thermal stability and an improved crystallinity with respect to zeolites of the prior art with the same ... | 10/19/2004 |
| 6790260 | Enhanced rate PSA process High product recovery and low BSF are achieved for fast-cycle shallow adsorbers in VPSA gas separation enabled by the coupled effects of high intrinsic adsorption rate and proper particle size selection. ... | 09/14/2004 |
| 6761754 | Selective adsorbent for nitrogen and method for separating air using the same A nitrogen selective adsorbent comprises a zeolite of a faujasite crystalline structure containing Li+ and at least one of NH+ and H+ as essential cations, and has a nitrogen adsorption characteristic represented by specific correlat... | 07/13/2004 |
| 6752852 | Apparatus for removing moisture from fluids comprising acid gases; methods of using same, and compositions Methods and apparatus for reducing moisture content of fluids comprising moisture and a sulfur-containing compound are disclosed. The methods use an acid gas resistant molecular sieve, and the sulfur-containing compounds are preferably selected from the group consis... | 06/22/2004 |
| 6733572 | Separation of propylene and dimethylether from hydrocarbon mixtures The present invention is a process for separating propylene and dimethylether from a mixture comprising propylene, dimethylether, and propane. The mixture is passed through a bed of an adsorbent comprising a porous crystalline material having (i) diffusion time cons... | 05/11/2004 |
| 6730142 | Separation of propylene from hydrocarbon mixtures In a process for separating propylene from a mixture comprising propylene and propane, the mixture is passed through a bed of an adsorbent comprising a porous crystalline material having (i) a diffusion time constant for propylene of at least 0.1 sec−1,... | 05/04/2004 |
| 6723154 | Method and device for cleaning air in a compressed air system Air in a compressed air system is cleaned by consecutively passing the air through a pre-filter, silica gel with large pores, silica gel with fine pores, a molecular sieve, and a fine filter. ... | 04/20/2004 |
| 6652626 | Agglomerated adsorbent, process for the production thereof and use thereof for the non-cryogenic separation of industrial gases A description is given of agglomerates of faujasite X with an Si/Al ratio of 1, the inert binder of which, on the one hand, has been converted to active zeolite by conversion to zeolite in an alkaline liquor, and which have been subjected, on the other ha... | 11/25/2003 |
| 6641788 | Absorbent for a hydrocarbon, and exhaust gas-purifying catalyst An adsorbent for a hydrocarbon, comprising a calcined ଲ-type zeolite showing a powder X-ray diffraction such that the sum of X-ray diffraction intensities at lattice spacings d=1.15&#b1;0.03 nm and d=0.397&#b1;0.01 nm, is at least 90% of the diffrac... | 11/04/2003 |
| 6616732 | Zeolite adsorbents, method for obtaining them and their use for removing carbonates from a gas stream The present invention relates to a novel family of zeolite adsorbents comprising a mixture of zeolite X and zeolite LSX, these adsorbents being predominantly exchanged with sodium or with strontium. These adsorbents are particularly suited to the decarbon... | 09/09/2003 |
| 6607584 | Adsorbent with improved mass transfer for a VSA or PSA process A formed adsorbent material includes an adsorbent solid phase and a gas phase ensuring transport of the gaseous components right to the adsorbent, being such that the constants for the transport kinetics of the components adsorbable in the gas phase and i... | 08/19/2003 |
| 6579347 | Method for removing sulfur compound present in city gas The present invention, relating to a method for removing dimethyl sulfide and tertiary butyl mercaptan present in city gas as the odorants, is aimed at removal of the sulfur compounds from city gas. The present invention removes dimethyl sulfide and terti... | 06/17/2003 |
| 6572838 | Process for the preparation of molecular sieve adsorbent for selective adsorption of nitrogen and argon The present invention relates to the manufacture of novel molecular sieve adsorbents for the separation of a gaseous mixture of oxygen, nitrogen and argon. The adsorbent is useful for the separation of oxygen and/or nitrogen from air. More specifically, t... | 06/03/2003 |
| 6544318 | High purity oxygen production by pressure swing adsorption Pressure swing adsorption process for the recovery of high purity oxygen from a feed gas comprising oxygen, nitrogen, and argon. The process includes a forward flow stage which comprises (a) passing the feed gas into a first adsorption zone containing an ... | 04/08/2003 |
| 6544319 | Purification of hexafluoro-1,3-butadiene An HFBD purification process includes: (a) contacting a composition containing HFBD with an adsorbent to remove from the HFBD at least two impurities selected from the group consisting of water, an alcohol, hydrofluoric acid and a fluorinated olefin, wher... | 04/08/2003 |
| 6537348 | Method of adsorptive separation of carbon dioxide Adsorptive separation of carbon dioxide from a gaseous mixture comprising carbon dioxide and gases less polar than carbon dioxide comprising contacting the gaseous mixture with a zeolite adsorbent is effected wherein carbon dioxide present in the gaseous ... | 03/25/2003 |
| 6534034 | Synthetic crystalline aluminosilicate zeolite having the tschortnerite framework topology and uses thereof A zeolite may be synthesized having the framework topology of tschortnerite (TSC) and an empirical formula of mA2/n O:Al2 O3 :ySiO2 where A is a cation such as lithium. It is anticipated that the synthetic TSC i... | 03/18/2003 |
| 6530974 | Method for the separation of molecules in the gas phase by adsorption by means of agglomerated solid inorganic adsorbents with a narrow and calibrated mesopore distribution The present invention relates to a novel family of inorganic solids with a narrow and calibrated mesopore distribution which are agglomerated with a binder; these solids can advantageously be used as adsorbents for the industrial separation of gas-phase c... | 03/11/2003 |
| 6530975 | Molecular sieve adsorbent for gas purification and preparation thereof A molecular sieve adsorbent for the purification of gas streams containing water vapor and carbon dioxide. The adsorbent is a combination of sodium form of a low-silica faujasite, having a residual content of potassium ions less than about 8.0 percent (eq... | 03/11/2003 |
| 6514317 | Method for purifying hydrogen-based gas mixture Purification of a hydrogen-based gas mixture containing impurities such as carbon monoxide, nitrogen and methane is effected by contacting the gaseous mixture with a zeolite adsorbent which is a shaped product comprised of at least 95%, as determined on t... | 02/04/2003 |
| 6511528 | Purification of carbon dioxide Commonly available carbon dioxide may contain unacceptable amounts of compounds containing greater than about ten carbon atoms, sulfur-containing materials, and nitrogen-containing materials which are particularly detrimental to semiconductor and silicon ... | 01/28/2003 |
| 6508863 | Claus feed gas hydrocarbon removal A process for adsorbing hydrocarbons from an acid gas stream includes passing the acid gas stream through an adsorbent that selectively removes hydrocarbons, desorbing the hydrocarbons from the adsorbent and contacting the desorbed hydrocarbons with an ac... | 01/21/2003 |
| 6506234 | Pressure swing adsorption gas separation method, using adsorbents with high intrinsic diffusivity and low pressure ratios A gas separation process incorporating the invention combines use of an adsorbent having high intrinsic diffusivity with a low pressure ratio PSA cycle. Further enhancements to the process are derived from the use of fast cycles, shallow beds and small pa... | 01/14/2003 |
| 6506236 | Process for reducing the level of carbon dioxide in a gaseous mixture A binderless X-type zeolite is used in a process for the reduction of the level of carbon dioxide and/or N2 O in a gaseous mixture, the zeolite being obtained by converting the binder in a bound zeolite to zeolite such that the ratio of the ads... | 01/14/2003 |
