Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8070947 | Permselective membrane module and method for manufacturing the same To provide a method for manufacturing a module having a selectively permeable membrane wherein the surface of the selectively permeable membrane thereof can be washed with good efficiency and further contaminants having been exfoliated from the surface of the membra... | 12/06/2011 |
| 7972510 | Filtration apparatus A filtration apparatus for performing solid-liquid separation by immersing a plurality of hollow fiber membranes in a to-be-treated liquid containing a suspended component includes the hollow fiber membranes folded double, a treated liquid collection means communica... | 07/05/2011 |
| 7862719 | Square membrane manifold system A membrane module (3) comprising a plurality of porous hollow membranes (8). The membranes (8) extend between and are fixed at each end in a header (5, 6). One header (6) has one or more of openings (12) formed therein. The ... | 01/04/2011 |
| 7727393 | Submerged hollow fiber membrane module Disclosed is a submerged hollow fiber membrane module which is easy to expand, has a small installation area, and exhibits excellent contamination prevention and durability. The submerged hollow fiber membrane module comprises: (I) a module body divided into two por... | 06/01/2010 |
| 7704393 | Hollow fiber membrane module and method for making thereof It is an object of the present invention to provide a hollow fiber membrane module which maximizes the efficiency of removing scale-like contaminants generated at the water treatment using hollow fiber membranes, and a method of manufacturing the same. The hollow fi... | 04/27/2010 |
| 7686955 | Submerged hollow fiber membrane module The present invention discloses a submerged hollow fiber membrane module which is of such a structure that it is easy to expand a module processing capability according to a treatment capacity, provides convenient module coupling properties and module manufacturing ... | 03/30/2010 |
| 7638048 | Membrane module for immersed operation A membrane module for an immersed operation has a fiber bundle of hollow fiber membranes which are cast into a headpiece and in immersed operation are surrounded by a liquid to be filtered. The module has a permeate collection chamber connected to the headpiece with... | 12/29/2009 |
| 7585411 | Low pressure filtration High flow, low-pressure ultrafiltration or microfiltration spiral wound membrane cartridges are used in filtration of liquid feedstocks having high suspended solids. Applications may utilize either vacuum or pumping for transmembrane drive pressure (TMP), and gas ma... | 09/08/2009 |
| 7438801 | Compact personal water purification device A lightweight, portable, water purification device can be used to recover potable water from any water source. The manually operated device, requires no external power, is very lightweight, and removes salt and other impurities from source water while also disinfect... | 10/21/2008 |
| 7422690 | Filtering system A filtering system comprising an inlet (11) for liquid to be filtered and an outlet (9) for filtered liquid, as well as filtering means, which system is characterized in that the filtering means, placed in series comprise: a first filter (2) com... | 09/09/2008 |
| 7410579 | Manual dialyzer header cleaning device A dialyzer header cleaning device composed of: a connecting member for connecting the device to the header, the connecting member having a longitudinal passage with a longitudinal axis; and a flow directing member having first and second opposed ends and a fluid pas... | 08/12/2008 |
| 7396462 | Filtering device A filtering device includes: a fluid-collecting tube; a plurality of positioning trays sleeved around the fluid-collecting tube and stacked one above the other; and a plurality of membranes alternating with the positioning trays. Each of the membranes is sandwiched ... | 07/08/2008 |
| 7378024 | Methods for improving filtration performance of hollow fiber membranes In accordance with the present invention, there are provided methods for improving performance of hollow fiber filtration membrane modules. Invention methods comprise a unique backwashing technique wherein the hollow fiber membranes within the module are pressurized... | 05/27/2008 |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7361274 | Aeration method A method and filtration module (5) for providing gas bubbles within an array of vertically disposed porous hollow membranes (6) to clean the outer surfaces of said membranes (6) when the array is immersed in a liquid by feeding (10) the g... | 04/22/2008 |
| 7351335 | Filter module A filter module provided with a housing (3) having an inlet (6) for a liquid to be filtered and an outlet (10) for filtered liquid, with a first filter element (7-9, 12) accommodated in the housing (3), in the form of a poro... | 04/01/2008 |
| 7335312 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 02/26/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7316774 | Fluid treatment system A reverse osmosis water filtration system has a control housing that contains control components for the filtration system. The control housing may include control components for a membrane flushing system and/or feed water pressurization system for a permeate stora... | 01/08/2008 |
| 7309323 | Wearable continuous renal replacement therapy device A continuous renal replacement therapy (CRRT) device adapted to be worn on a portion of the body of a patient. The CRRT device is worn by the patient and operates on rechargeable batteries for more than 5 hours. Dialysate is used to remove impurities from the blood.... | 12/18/2007 |
| 7300582 | Immersed membrane apparatus An apparatus for filtering a liquid in a tank has a plurality of elements and a frame for holding the elements while they are immersed in the liquid. The elements have a plurality of hollow fibre membranes attached to and suspended between an upper header and a lowe... | 11/27/2007 |
| 7294274 | Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc... | 11/13/2007 |
| 7291267 | Molecular separator The present invention discloses a method and apparatus for separating particles and dissolved matter from a fluid stream. Specifically, the present invention includes a first pressure source which transports untreated fluid into a separator annulus with a filter ele... | 11/06/2007 |
| 7282147 | Cleaning hollow core membrane fibers using vibration A filtration system is provided with hollow membrane filter elements operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and ultrasonic energy may be used to clean exterior portions of the hollow membrane filter elem... | 10/16/2007 |
| 7276171 | Method for cleaning separation membrane When an out-of-basin type separation membrane, which is connected to a biological treatment tank through a circulation passageway for filtering tank water, is cleaned, a part or all of the backwash drainage containing the sludge peeled from the membrane surface is r... | 10/02/2007 |
| 7273554 | Crossflow-filtration method for beverages The invention relates to a crossflow-filtration method for beverages, in particular beer, which comprises the following steps: a) the feed liquid is introduced into a filter module by means of a tangential flow through a filter membrane (6) in a first directi... | 09/25/2007 |
| 7267771 | Apparatus for therapeutic apheresis Apparatus for carrying out therapeutic apheresis includes a filter device for being implanted in a blood vessel for carrying out in-vivo plasma separation having one or more elongated hollow tubes and a plurality of elongated hollow microporous fibers capable of sep... | 09/11/2007 |
| 7229555 | Low-maintenance watermaker A reverse osmosis system is subject to long periods of non-use in which water stands inside. A hollow-cylindrical spiral-wound type reverse osmosis membrane is disposed inside a cylindrical pressure vessel. An electrostatic-field generator is disposed inside the pre... | 06/12/2007 |
| 7223340 | Hollow fibre restraining system A restraining system for hollow fibers is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of ... | 05/29/2007 |
| 7194911 | Pressure gage for an expandable gas or fluid distribution system A system and method for a pressure gage assembly for an expandable gas or fluid distribution system is disclosed. The pressure gage assembly comprises a pressure gage with a male connector on one face, and a female connector on an opposite face. The pressure gage as... | 03/27/2007 |
| 7160454 | Membrane filter for water treatment The invention relates to a membrane filter for water treatment, comprising a head piece including a permeate collecting chamber with a permeate outlet, and at least one fiber bundle made from capillary membranes, which are secured into the head piece with an end tha... | 01/09/2007 |
| 7147616 | Method for emptying a blood circuit of an apparatus for the extracorporeal treatment of blood A method for emptying a blood circuit of an apparatus for the extracorporeal treatment of blood after interrupting a treatment session. The apparatus has a blood treatment device with first and second compartments separated by a semi permeable membrane, an arterial ... | 12/12/2006 |
| 7141167 | Filter device A filter device for filtering liquids including a filter membrane, a main body which is arranged upstream from the filter membrane, and which has a feed channel perpendicular to the surface of the filter membrane, a gap extending between the filter membrane and the ... | 11/28/2006 |
| 7125516 | Vacuum drying process used for manufacturing dialyzer A method of sterilizing and drying a dialyzer or other device, wherein a vacuum drying phase is interrupted by interspersed pulses of air or other gas. The pulses lessen the evaporative cooling effect, to thereby reduce differential shrinkage that can structurally d... | 10/24/2006 |
| 7122121 | Advanced submerged membrane modules, systems and processes Advanced submerged membrane systems are provided. Said submerged membrane systems have multiple membrane modules comprising of strips of flat sheet membrane, bundles of self-support hollow fiber membranes braided together for reinforcement, tubular membranes, and br... | 10/17/2006 |
| RE39294 | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate A vertical skein of “fibers”, opposed terminal portions of which are held in headers unconfined in a modular shell, is aerated with a gas-distribution means which produces a mass of bubbles serving the function of a scrub-brash for the outer surfaces of the fibe... | 09/19/2006 |
| 7108782 | Marine vessel onboard wastewater treatment system Shipboard wastewater undergoes treatment within an automatic system based on membrane bioreactor technology. Bacteria that are naturally present in the raw waste stream break down during treatment and consume organic material in the wastewater. Membranes in a biorea... | 09/19/2006 |
| 7097261 | Modulator A modulator comprising an inlet, an exhaust and an outlet, the modulator comprising a piston moveable in response to a control pressure in a control chamber to vary to supply of fluid under pressure to the outlet, wherein the modulator comprises a first end face and... | 08/29/2006 |
| 7087173 | Inverted cavity aerator for membrane module An aerator for immersed filtering membranes has an aerator shell with openings for discharging bubbles from its upper surface and a shape capable of temporarily containing a volume of air in fluid communication with the openings. The shell is open to tank water belo... | 08/08/2006 |
| 7083726 | Hollow thread film cartridge, hollow thread film module using the cartridge, and tank type filter A hollow fiber membrane cartridge wherein a cartridge head and a bottom ring are connected and fixed to each other by means of a plurality of rods or pipes, the hollow portion at the end of each hollow fiber membrane on the cartridge head side is open, the hollow po... | 08/01/2006 |
