Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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 |
| 4375415 | Device and method for continuously fractionating blood to produce plasma An apparatus, system and process for continuously fractionating blood in which blood from a donor is passed along a semipermeable membrane through which passes a fraction to be collected. Turbulent blood flow is maintained to prevent a filter cake from bu... | 03/01/1983 |
| 4374731 | Method and apparatus for obtaining a desired rate of plasma collection from a membrane plasmapheresis filter A method and apparatus are described for obtaining a desired rate of plasma collection from a membrane plasmapheresis filter having a blood inlet, a blood outlet, a plasma outlet, outer members and a pair of spaced microporous filter membranes defining a ... | 02/22/1983 |
| 4369112 | Filter device The filter device has a housing with elongated top and bottom walls and side walls which taper inwardly from top to bottom. The top wall has extending downwardly therefrom into the housing a generally flat filter membrane support with a quadrangular perip... | 01/18/1983 |
| 4357236 | Automatic addition of a corrosion inhibitor to a coolant system by osmotic pressure A device for the automatic addition of a corrosion inhibitor to a cooling system, such as in an automobile engine, utilizing osmotic pressure. The device includes a container for a concentrated corrosion inhibitor solution with a semi-permeable osmotic me... | 11/02/1982 |
| 4346004 | Securing means for the leakproof mounting of a semi-permeable membrane to a support plate A device is provided for the leaktight securing of semi-permeable membranes to opposite faces and around each orifice of a membrane support plate of a separatory apparatus which separates by selective permeability. Said device comprises two stamped metal ... | 08/24/1982 |
| 4343705 | Biological liquid fractionation using alternate opposite flow directions across a membrane A fractionation system for providing a clarified fraction or a fraction for analysis of biological fluids and the like includes a disposable filtration vessel with a first reservoir chamber adapted to receive the fluid to be fractionated, a second reservo... | 08/10/1982 |
| 4340475 | Membrane separation cell A membrane separation cell is described comprising a stack of supporting members each supporting a membrane on each of its opposite faces and defining a permeate compartment therewith, and separating members interposed between the membranes of adjacent su... | 07/20/1982 |
| 4334992 | Modular block for osmotic methods of separation A modular block for osmotic methods of separation under pressure can be folded open and the filtration unit can easily be removed and introduced in the process. The filtration unit consists of a base plate with a membrane filter candle, and the filter can... | 06/15/1982 |
| 4265760 | Device for dilution and delivery of in vivo chemicals A collapsible disposable container for dilution and delivery of chemicals for in vivo use which includes a combination adsorbent and absolute filter for effecting sterilization and removal of endotoxins and organic contaminants from a diluent introduced i... | 05/05/1981 |
| 4264079 | Assembly for the transfer of a fluid between a duct and a space between two thin sheets Assembly is disclosed for connecting a duct to a hole in a flat sheet including a wall for receiving one surface of the flat sheet, a nozzle adapted to be sealingly connected to a duct, the nozzle protruding through and beyond the wall such that the flat ... | 04/28/1981 |
| 4263017 | Permeable membrane assembly The permeable membrane assemblies disclosed in this application utilize the bi-leaf edge membrane concept and the lay-flat tubing connector concept presented in prior and pending patents for ionic systems. Herein these concepts are shown and claimed for t... | 04/21/1981 |
| 4255263 | Stacked assembly for reverse osmosis The stack assembly (FIG. 9) is formed by identical plates (P) of rectangular shape alternating with semi-permeable membranes (12). A face of each plate is formed with a plurality of transversely extending flow-conveying beds, each of which has a through-a... | 03/10/1981 |
| 4247393 | Hemodialysis assist device A hemodialysis assist device including a normally nonflowing aqueous sorbents slurry medium chamber and at least one blood flowthrough passage separated therefrom by a semipermeable membrane of the flat plate, pleated flat plate, hollow fiber or hemicapil... | 01/27/1981 |
| 4243536 | Cross-flow filtration apparatus Apparatus for the cross-flow filtration of liquids or gases, such apparatus having disc-shaped filter elements which are located concentrically around a filtrate collecting pipe and within a tubular jacket, and an inlet and outlet pipe extending parallel ... | 01/06/1981 |
| 4228014 | Apparatus for desalination and purification of water by reverse osmosis and ultrafiltration An apparatus for the desalination and purification of water by reverse osis and ultrafiltration. The apparatus includes dish-like carrier plates and water guide plates held between two end plates and alternately stacked one above the other. The apparatus... | 10/14/1980 |
| 4212742 | Filtration apparatus for separating blood cell-containing liquid suspensions A filtration device for effecting separation of a blood cell-free liquid filtrate from a blood cell-containing liquid suspension in continuous laminar flow therethrough, employing a microporous filtration membrane. The filtration flow channels along the s... | 07/15/1980 |
| 4212738 | Artificial kidney A flexible artificial kidney, capable of being worn directly on the body of the patient, and characterized by a flexible hollow retentate chamber of about 3 to 50 cm3 in volume surrounded by a jacketed flexible dialysate chamber of about 300 to... | 07/15/1980 |
| 4204963 | Sealing members for a membrane diffusion device Improvements are provided in the sealing arrangment and in an inflatable shim for a membrane diffusion device which comprises a stack of membrane sections and means for defining interleaving flow paths for two different fluids, separated by the membranes.... | 05/27/1980 |
| 4199458 | Membrane diffusion device with external compression A membrane diffusion device, such as a membrane oxygenator, is disclosed which comprises a stack of flat membrane wall pairs and flat membrane supports in alternating, interleaving relation. The casing includes a pair of opposed sidewalls that are substan... | 04/22/1980 |
| 4165082 | Leakproof securing means for mounting a semi-permeable membrane to a support A support plate has fluid-flow openings therethrough which openings are flared at their ends. Securing rings extend into the openings from opposite ends and have tapered lips firmly pressing the edges of membranes against the flared end surfaces of openin... | 08/21/1979 |
| 4159250 | Dialyzer casing A dialysis device of the type including a stack of parallel membrane support plates and membranes. A casing encloses the top, bottom and two opposing sides of the stack with the casing formed of two plastic molded interchangeable parts. Each casing part c... | 06/26/1979 |
| 4146480 | Hemicapillar plate dialyzer A hemicapillar plate dialyzer comprising blood plates and dialyzer plates, with semipermeable diaphragms between said plates, provided with means to achieve a laminar flow of blood and a turbulent flow of the dialyzing solution by using a number of interr... | 03/27/1979 |
| 4137113 | Production of a liquid separation module Disclosed is a liquid separation module of a spiral type which is produced by a simple apparatus requiring no manual operations, so that a mandrel is provided with a spirally and tightly wound layer arrangement consisting of a plurality of layer elements ... | 01/30/1979 |
| 4136029 | Pressure filtration device A pressure filtration apparatus including an upper portion with an inflow channel and a discharge channel for the concentrate and a lower portion with a filter support and a discharge channel for the filtrate, the upper and lower portions being releaseabl... | 01/23/1979 |
| 4132649 | Gasket arrangement for purification apparatus A fluid purification apparatus of the type which includes a stack of membrane packs and a stack of gaskets located at the peripheral portions of the membrane packs to keep them separated from one another, wherein the gaskets have outer lands bearing on on... | 01/02/1979 |
| 4115274 | Apparatus for desalinating water by reverse osmosis Apparatus for desalinating water by reverse osmosis, having a series of pus discs each covered on both sides by a membrane, and compressed at their edges between respective pairs of a stack of module plates which are identical and which each consist of t... | 09/19/1978 |
| 4087362 | Filter housing A filter housing is disclosed. It is preferably used to house membrane filters supported on plates. The base, top and a two-way cap cooperate to form a pressure-tight vessel. The top can be moved vertically to permit use of various numbers of filters and ... | 05/02/1978 |
| 4082668 | Ultra filtration apparatus and method An ultrafiltration cell utilizing two membranes with a magnetic stirring bar system in between. This permits stacking of stirred cells and doubles the efficiency of each cell. Automatic stop to prevent drying is accomplished by employing a floating valve.... | 04/04/1978 |
| 4071444 | Portable chemical reactor for use as an artificial kidney A small, portable, chemical reactor adapted to tap the venous blood supply of a patient, said device including a stack of semi-permeable membranes blood and dialysis materials in alternate chambers, said stack being held in sealed relationship by a single... | 01/31/1978 |
| 4039455 | Retaining device for an apparatus having flat semi-permeable membranes A stack of membranes and spacers is held between upper and lower plates, the lower plate having hinged thereto, at least two side plates. These may be hinged by being formed integrally so as to be flexible outwardly, or may be hinged by suitable co-operat... | 08/02/1977 |
| 4025425 | Purification apparatus Apparatus is described for purifying waste water or other feed fluid, which includes a stack of membrane packs wherein each pack contains a conduit sheet, a pair of support sheets of filter paper or the like, each lying against a face of the conduit sheet... | 05/24/1977 |
| 4013564 | Multipurpose metabolic assist system A multipurpose metabolic assist system has an inlet passageway, an outlet passageway, a treated blood component passageway spaced from the inlet passageway and extending to the outlet passageway. The system has at least one space between at least a portio... | 03/22/1977 |
| 3993566 | Reverse osmosis apparatus A reverse osmosis module comprising a semipermeable membrane, a porous membrane support structure, and a porous backing member having at least a pair of opposed surfaces and including a plurality of longitudinally extending channels, said porous backing m... | 11/23/1976 |
| 3984324 | Multiple plate ultrafilter An ultra-filter comprising a stack of alternating feed fluid conducting cells and permeate fluid conducting cells separated by semipermeable membranes. The feed cells comprise two facing gaskets which are separable to permit cleaning their interface area.... | 10/05/1976 |
| 3984319 | Membrane separation equipment In a membrane separation device means for mounting a semi-permeable membrane separation unit on the sidewall of a casing including a plug member and releasable interlocking means for interconnecting the plug and separation unit to the sidewall with the pl... | 10/05/1976 |
| 3979297 | Membrane support-plates for fluid separating apparatus and apparatus using such support-plates Membrane support-plates for fluid separating apparatus, and apparatus using such support-plates, wherein the support-plates are generally rectangular, being formed of two stamped metal plate elements arranged back-to-back, each element having a cell in it... | 09/07/1976 |
| 3979298 | Fluid separating apparatus Fluid separating apparatus in which a stack of membrane support plates are clamped between two end plates, each membrane support plate including two elementary plates of generally rectangular configuration and substantially constant wall thickness, said e... | 09/07/1976 |
| 3974068 | Ultrafiltration process and apparatus using low hydrostatic pressure to prevent concentration polarization Liquids containing microorganisms, macromolecules or finely-divided solid matter in a liquid are filtration-concentrated by movement of the liquid containing such particles through an elongated tubular channel having membrane filters, as walls thereof, wi... | 08/10/1976 |
| 3943057 | Membrane support-plates and fluid separating apparatus in which they are present Membrane support plate for fluid separating apparatus, in which the support plate is made up of at least five flat elements secured together in face-to-face relationship. A central element has cut-out slots to remove the permeate which has passed through ... | 03/09/1976 |
