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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8101083 | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal A pre-treatment method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into waters with suspended solids in a liquid fraction to be filtered to form sulfurous acid (H2SO3) to acid leach heavy metals int... | 01/24/2012 |
| 8075776 | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A filtration device is provided for withdrawing permeate essentially continuously from a multicomponent aqueous substrate containing growing microorganisms in a reservoir. A vertical skein of fiber is scrubbed with coarse bubbles which emanate from a conversion baff... | 12/13/2011 |
| 8048306 | Scouring method A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes (9) arranged in a membrane module (4) by providing, from within the module, by means (10) other than gas passing through the pores of said ... | 11/01/2011 |
| 8038882 | Intermittent gas flow apparatus and membrane separation apparatus Intermittent gas flow and membrane separation apparatus and methods of use including an internal gas chamber including an upper wall; at least one inlet for supplying gas to the internal gas chamber; a column pipe that extends above the upper wall of the internal ga... | 10/18/2011 |
| 8021553 | Systems and methods for forward osmosis fluid purification using cloud point extraction A process for purification of fluids, for example, desalination of seawater or brackish water, using organic solutes in a concentrated water solution for use in a forward osmosis process, to extract fresh water out of salt water through the forward osmosis membrane,... | 09/20/2011 |
| RE42669 | Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces A gas-scrubbed vertical cylindrical skein of “fibers” has their opposed terminal portions held in headers unconfined in a modular shell, and aerated with a cleansing gas supplied by a gas-distribution means which produces a mass of bubbles serving the function o... | 09/06/2011 |
| 8012355 | Molecular separator The present invention discloses a method and apparatus for separating particles and dissolved matter from an untreated fluid stream. Specifically, the present invention includes a first pressure source which transports untreated fluid or contaminated aqueous fluid i... | 09/06/2011 |
| 7972514 | Method and a system for performing maintenance on a membrane used for pressure retarded osmosis A method and system for performing maintenance on a membrane having semi-permeable properties and is used in a pressure retarded osmosis PRO, the membrane having a high pressure first side and second side of lower pressure. A time controllable first valve or pump ( | 07/05/2011 |
| 7938966 | Backwash method A filtration arrangement including one or more membrane modules (5) positioned vertically within a feed tank (6), each membrane module (5) having one or more membranes positioned therein. An aeration hood (10) having an upper wall (11 | 05/10/2011 |
| 7935258 | Process and an apparatus for filling and/or rinsing an extracorporeal blood circuit A patient end of a venous blood line (26) is connected to a discharge of a dialysis liquid preparation circuit by means of an auxiliary connector (23), and the patient end of an arterial blood line (25) is connected to a service line (32)... | 05/03/2011 |
| 7922910 | Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, v... | 04/12/2011 |
| 7906023 | Wastewater treatment method and apparatus The present invention discloses a method and apparatus for separating particles and dissolved matter from a produced water fluid stream. Specifically, the present invention includes a first pressure source which transports untreated produced water or contaminated aq... | 03/15/2011 |
| 7820050 | Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, v... | 10/26/2010 |
| 7674382 | Method of cleaning fouled and/or scaled membranes A method of cleaning a fouled and/or scaled UF or MF membrane with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: (a) treating the membrane in a membrane separation system with a solution containin... | 03/09/2010 |
| 7662289 | Method of cleaning fouled or scaled membranes A method of cleaning a fouled or a scaled RO or NF membrane surface with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: treating the membrane surface in a membrane separation system with a solution... | 02/16/2010 |
| 7658852 | RO membrane cleaning method Direct-osmosis (DO) method for cleaning a semi-permeable membrane in a RO separation module, the membrane having a feed side with foulant located thereon, and an opposite permeate side. A normal RO separation process in the same module includes: feeding, under gauge... | 02/09/2010 |
| 7625491 | Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, v... | 12/01/2009 |
| 7622043 | Dialysis device and method for cleaning the same In cleaning the dialysis device, first, the concentrate passage is disconnected from the dialysis solution concentrate container and is connected to the branched passage, and a pre-cleaning process is performed in which the fluid circuit is replace with the purified... | 11/24/2009 |
| 7615157 | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A process is described for withdrawing filtered permeate from a non-pressurized substrate in a reservoir through an assembly. The assembly has a plurality of hollow fiber filtering membranes disposed generally vertically between two solid bodies, an enclosure sealed... | 11/10/2009 |
| 7582212 | Method of removing silicon dioxide from waste liquid, method of cleaning membrane tube and method of processing waste water A method of removing silicon dioxide from a waste liquid is described. A solution containing fluoride ions is added into the waste liquid to form a reaction product. A method of cleaning a membrane tube for processing waste water is also described, wherein the membr... | 09/01/2009 |
| 7578940 | Membrane cartridge, membrane separating device, and membrane separating method A membrane separating method and a membrane separating device capable of preventing sludge from being accumulated on the surface of hollow fiber membranes in a membrane cartridge and having filtration performance stably sustained for a long period. The membrane cart... | 08/25/2009 |
| 7563375 | Direct osmosis cleaning A method of cleaning a fouled RO membrane in a module for RO separation, the membrane having feed side and permeate side, the foulant accumulating at the feed side. The cleaning method comprises: feeding concentrated saline solutio... | 07/21/2009 |
| 7534353 | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes A process is described for withdrawing filtered permeate from a non-pressurized substrate in a reservoir through an assembly. The assembly has a plurality of hollow fiber filtering membranes disposed generally vertically between two solid bodies, an enclosure sealed... | 05/19/2009 |
| 7501061 | Production of water for injection using reverse osmosis A method and system for providing Water for Injection using reverse osmosis. Water for Injection can be produced by reverse osmosis and the reverse osmosis membrane can be kept in a constantly self-sanitizing condition. One way of obtaining a constantly self-sanitiz... | 03/10/2009 |
| 7445716 | Crossflow pressure liquid filtration with ultrasonic enhancement Methods and apparatus for increasing the duration of uninterrupted filtering flow by using crossflow filtration and ultrasonic energy with in difficult to filter process liquids (e.g. of the kind having (1) a carrier liquid, (2) coalescing solids particles which ten... | 11/04/2008 |
| 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 |
| 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 |
| 7371319 | Production of water for injection using reverse osmosis A method and system for providing Water for Injection using reverse osmosis. Water for Injection can be produced by reverse osmosis and the reverse osmosis membrane can be kept in a constantly self-sanitizing condition. One way of obtaining a constantly self-sanitiz... | 05/13/2008 |
| 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 |
| 7368139 | Aseptic processing system for fruit filling An apparatus for aseptic processing of a viscous food product includes a product tank configured to hold the viscous food product. A first pump is configured to pump the viscous food product from the product tank through a heat exchanger at a given rate. A cleaning ... | 05/06/2008 |
| 7367346 | Method for cleaning hollow tubing and fibers Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the c... | 05/06/2008 |
| 7368058 | Method of generating fresh water and fresh-water generator The present invention is a water processing method comprising the steps of separating boron-containing water in a reverse osmosis membrane module to provide a permeated water and subjecting a part of the obtained permeated water to boron removal using an adsorbent, ... | 05/06/2008 |
| 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 |
| 7357709 | Metal vent A metal vent having an aperture for the passage of a fluid, a porous membrane sealing the aperture, wherein the components of the vent are assembled by an interference fit. ... | 04/15/2008 |
| 7354758 | Device and method for sterility testing Device and method for sterility testing, in particular of pharmaceutical products, includes a closed sterility test system having at least two test containers, in each case having an integrated test filter, an outlet connecting branch arranged below the test filter ... | 04/08/2008 |
| 7351345 | Method for manufacturing a module for treating a fluid A module enabling individual adaptation by the user to the respective task in the treatment of fluids using housings and connections of existing filtration devices without any modification is described. The module comprises one or more cells stacked one on top of th... | 04/01/2008 |
| 7347942 | Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, v... | 03/25/2008 |
| 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 |
| 7332088 | Method of water purification The invention provides a method for the removal of biological species, such as Cryptosporidium, from water using aluminium based media which contains surface Al—OH groups. ... | 02/19/2008 |
