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| Number | Title | Issue Date |
| 7300579 | Flocculation apparatus A flush mixing tank is provided with a flocculant mixing section in which a raw water a to be treated is introduced and a flocculant such as known aluminum sulfate or polychlorinated aluminum is injected, and then they are agitated and mixed; and a floc growing sect... | 11/27/2007 |
| 7267761 | Method of reducing sulfur in hydrocarbon feedstock using a membrane separation zone A membrane is used in combination with fractionation and hydrodesulfurization to reduce the sulfur content of hydrocarbon feeds, preferably sulfur-containing naphtha feeds. A membrane separation zone is employed to treat a fraction of effluent from a fractionation z... | 09/11/2007 |
| 7169213 | Multi-channel cross-flow porous device A multi-channel modular device (10) processes between two fluid streams of different compositions. The device (10) includes a porous body (150) having a first plurality of feed-flow pathways (110) disposed in the body (150) for tra... | 01/30/2007 |
| 7140495 | Layered sheet construction for wastewater treatment Described is an apparatus for the removal of organic substances and/or nitrogen sources from an aqueous medium by exposing the aqueous medium to the action of microorganisms supported on a gas permeable, water impermeable layer, or on and/or in a three dimensional m... | 11/28/2006 |
| 7128961 | Honeycomb structure, method for manufacturing honeycomb structure, and exhaust gas purification system using honeycomb structure There is disclosed a honeycomb structure which can be used as a filter for trapping/collecting particulates included in an exhaust gas and in which it is possible to remove ashes deposited inside without requiring any special mechanism or apparatus or without being ... | 10/31/2006 |
| 7048846 | Membrane separation for sulfur reduction A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux an... | 05/23/2006 |
| 7041212 | Membrane separation for sulfur reduction A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux an... | 05/09/2006 |
| 7018527 | Membrane separation for sulfur reduction A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux an... | 03/28/2006 |
| 6991737 | Filtering method A filtering method including the steps of preparing a water purifying apparatus 1 with a cell structure 2 having units for constituting cell structure 4, and a cap portion 3, and making raw water flow into cells 10 from one end, an... | 01/31/2006 |
| 6958120 | Membrane module The invention relates to a method for producing a membrane module, comprising a plurality of bar-shaped ceramic filter elements disposed parallel to each other and stretched on the ends of the bay by covers, which extend perpendicular to said bars. Said modules also... | 10/25/2005 |
| 6077436 | Device for altering a feed stock and method for using same A device for altering a feed stock is made of a structure for passage of a feed stock. The structure can be either an extruded unibody structure, or a nested structure. The structure has an interior and an exterior section, and a longitudinal axis, and wa... | 06/20/2000 |
| 5855781 | Monolithic ceramic filter A monolithic ceramic filter having a portion of the partition wall of a honeycomb structure exposed with its end face on an outer wall surface of the structure and increased in thickness as compared to the remaining portion of the partition wall to form a... | 01/05/1999 |
| 4878930 | Filter cartridge A filter cartridge for removing particles or dust from a stream of moving gas or air, including a filter medium disposed between a pleated inner wire support frame, outer longitudinal wire support stays disposed along each inner apex of the pleats of the ... | 11/07/1989 |
| 4844805 | Reverse osmosis element A reverse osmosis water purification module has an enclosed cylindrical housing in which at least twelve purification elements are mounted in a uniform, spaced parallel fashion. Each element consists of a long flat member having a thermoplastic sheet back... | 07/04/1989 |
| 4837161 | Method for reagent addition to a flowing liquid carrier stream An analytical chemistry apparatus and method for introducing a reagent into a flowing stream of liquid carrier in order to quantitatively analyze one or more components of a sample added into the carrier. The reagent is permeated across a short section of... | 06/06/1989 |
| 4816150 | Flat filtering element with a membrane forming a lamellar filtration cell and a tangential flow pressure filter including stacks of such elements Filtration module formed by a stack of tubular membranes shaped as flat cases (1) 0.2 to 2 mm thick and intercalated drains (2) formed as a cloth or a lattice which leaves uncovered the end parts of the case, which are covered by tight and rigid tongues (... | 03/28/1989 |
| 4781831 | Cross-flow filtration device with filtrate flow conduits and method of forming same A cross-flow filtration device which separates a feed stock into filtrate and retentate, including a structure of porous material which defines a plurality of passageways extending longitudinally from the feed end of the structure to a retentate end, and ... | 11/01/1988 |
| 4761229 | Multi-leaf membrane module Described is a membrane apparatus having particular application in hydrocarbon processes, such as separating ketone dewaxing solvent from a hydrocarbon process stream. The apparatus contains a pressure resistant compartment containing flattened tubular me... | 08/02/1988 |
| 4069157 | Ultrafiltration device A ceramic support having a multiplicity of parallel passageways therethrough, the passageways being coated with an ultrafiltration membrane, the support having a specific surface area to volume ratio and defined permeability characteristics.... | 01/17/1978 |
| 4060488 | Particulate membrane ultrafiltration device An ultrafiltration device which includes a porous support, one surface of which is coated with a membrane comprising at least two sizes of particles, one size being capable of passing through the pores and another size capable of passing into but not thro... | 11/29/1977 |
