U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 6099319

Neuroimaging as a Marketing Tool

Neuroimaging as a means for validating whether a stimulus such as advertisement, communication, or product evokes a certain mental response such as emotion, preference, or memory, or to predict the consequences of the stimulus on later behavior such as consumption or purchasing.

Newsletter  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.

 

Class 210/321.84 - Planar membrane


Subclass of Class 210 - Liquid purification or separation
Definition: Apparatus wherein said semipermeable membrane is in an essentially
No. of patents: 400
Last issue date: 02/14/2012


                9    
NumberTitleIssue Date
4777137Method and apparatus for microbiological testing of liquids
Method and apparatus for the microbiological testing of liquids to identify and count living microorganisms contained therein includes a tubular sleeve for collecting the liquid sample to which there is attached at one end a microporous membrane filter. E...
10/11/1988
4761230Small volume tangential flow filtration apparatus
A filter system particularly useful with small sample volumes includes first and second housing sections with a flow channel extending therebetween. A membrane filter forms one boundary of the flow channel. A pair of reservoirs, one for feed and the other...
08/02/1988
4756835Permeable membranes having high flux-density and low fouling-propensity
A permeable membrane system comprised of at least two sheets, at least one of the two sheets being a grooved permeable membrane having regularly spaced grooves on at least one surface, the grooves having a predetermined spacing factor, the grooved permeab...
07/12/1988
4755299Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process
A multi-layer membrane having a porous backing layer of polyacrylonitrile, polysulfone or the like, and an active separating layer of polyvinyl alcohol or cellulose acetate. The membrane is particularly suitable for the separation of water-alcohol mixture...
07/05/1988
4752305Device and method for separating individual fluids from a mixture of fluids
A device and method is disclosed for separating individual fluids (particularly gases) from a stream that contains more than one fluid. The separator device is made up of a bundle of hollow fibers fastened into a resin tubesheet at each end of the bundle....
06/21/1988
4749483Membrane separation arrangement and method of producing a plate module thereof
A membrane separation arrangement includes a plurality of plate modules adjacently arranged in a housing, the plate modules being formed by two separation membranes each, which are interconnected at their rim regions so as to be tight all around, inner sp...
06/07/1988
4749476Apparatus for filtering pressure sensitive substances out of liquid suspension
For the separation of suspensions in the form of liquid solid component mixtures with the aid of porous filter membranes or for the separation of suspensions free of solid components into the liquid components with the aid of solution diffusion membranes,...
06/07/1988
4749551Hollow-fiber oxygenators for blood
In a hollow-fiber oxygenator consisting of a container containing a plurality of fibers joined into a bundle and open at their ends to allow the passage into them of a first fluid (blood) and over the outside of which flows a second fluid (oxygen-carrying...
06/07/1988
4747946Tubular membrane ultrafiltration module
An improved tubular membrane filtration module including an outer cylinder and a plurality of water permeable non-woven fabric pipes formed on the inside thereof, the non-woven fabric pipes being inserted into the outer cylinder in a closely bundled state...
05/31/1988
4738782Method and apparatus for aseptic filtration
A nutrient solution of a microorganism to be supplied to a fermentor or a culture broth in the fermentor is aseptically filtered by a porous filter medium made of polytetrafluoroethylene polymer and having properties impervious to microorganism, resistant...
04/19/1988
4735718Multilayer membrane separator
A multilayer membrane separator which permits serial and tangential contact of a retentate with a plurality of membranes within the separator. The separator is formed from a plurality of contiguous separator units each consisting of two membrane layers, t...
04/05/1988
4735726Plasmapheresis by reciprocatory pulsatile filtration
A process for continuous plasmapheresis, which process comprises conducting blood over a microporous membrane in reciprocatory pulsatile flow, and preferably further comprises reducing the transmembrane pressure difference to below zero during each forwar...
04/05/1988
4689306Device for sterile sampling from a fermenter
A device of the present invention for sterile sampling of culture liquor from a fermenter comprises a sampler (1) positioned on the fermenter (3) in the zone of stirring the culture liquor and a sterile sample collector (11). The sampler (1) is fashioned ...
08/25/1987
4667504Flow through device for determination of the penetration rate of chemicals across biological membranes in vitro
An apparatus for determining in vitro the penetration rate of chemicals across a biological membrane. The apparatus comprises two housings, one holding a reservoir of test chemical, and the other providing a chamber for flowing receptor solution across a ...
05/26/1987
4666603Semi-permeable membrane liquid filtration apparatus including elliptical blocking means
An apparatus for the ultra or hyperfiltration of liquids to form a permeate fraction and a concentrate fraction includes a stack of membranes and membrane support plates. The stack includes two longitudinally extending main flow passages connected with a ...
05/19/1987
4640777Membrane device for sterility testing
Apparatus for testing the sterility of fluids consisting of at least one hermetically sealed test container formed from a top portion, a bottom portion, a filter holder and a test filter. The filter is formed entirely from a hydrophilic material. The filt...
02/03/1987
4640776Plasmapheresis filtration module having pressure balancing and sealing means
A plasmapheresis filtration module having stacked grooved plates interleaved with membranes, enclosed in a unitary, flexible, impermeable envelope, sealing being effected by pressing the membranes between blood flow channels and a sealing surface on a pla...
02/03/1987
4639316Automatic liquid component separator
A device in the form of a sealed transparent tube comprised of glass, for example, is provided for separating the fraction containing cells and cell free fraction of a liquid, such as blood, automatically upon introduction into the device, and without the...
01/27/1987
4639317Plasmapheresis filtration module having improved sealing means
A plasmapheresis filtration module having stacked grooved plates interleaved with membranes, enclosed in a unitary, flexible, impermeable envelope, sealing being effected by pressing the membranes between blood flow channels and a sealing surface on a pla...
01/27/1987
4636312Plasmapheresis filtration module having improved end plate
A plasmapheresis filtration module having stacked grooved plates interleaved with membrane filters, enclosed in a unitary, flexible, impermeable envelope, sealing being effected by pressing the membranes between blood flow channels and a sealing surface o...
01/13/1987
4636473Membrane and static mixer-moderated bioreactor with anti-fouling device
A bioreactor arrangement comprises a housing defining a closed space having a longitudinal axis with at least two spaced apart microporous membranes fixed therein dividing the space into a first chamber on one side of one of the membrane, a second chamber...
01/13/1987
4631130Plasma separator
A filter membrane housed in a casing is a microporous membrane manufactured by the phase separation method and having a pore size of 0.1 to 0.8μ, preferably 0.2 to 0.6μ, and a thickness of 100 to 300μ. At least one membrane unit comprising of such a me...
12/23/1986
4614585Frangible bonded disposable filtration unit with recoverable filter
A disposable filtration unit having a breakaway reservoir to facilitate recovery of the filter membrane....
09/30/1986
4600507Filter device for liquids
A filter device capable of simultaneously effecting centrifugal separation and filtration comprises a hollow main body closed at one end thereof and adapted for effective use in a centrifuge, at least one filter medium disposed inside the hollow main body...
07/15/1986
4599170Filtration apparatus
A filter device including a unitary cell for receiving a fluid to be filtered and comprising a receptacle portion with an open end; a base portion defining an outlet and bonded to and closing an opposite end of the receptacle portion; and a filter membran...
07/08/1986
4597868Body fluid filter device
A body fluid filter device is formed by enclosing liquid-tightly and slidably with a filter device case a body fluid filter membrane, an elastic body fluid flow path regulation plate disposed on one surface of the filter membrane and provided with a plura...
07/01/1986
4594884Diffusion measuring device
A device for measuring diffusion, particularly adaptable to measuring diffusion of drugs, is described....
06/17/1986
4581141Dialysis material and method for removing uremic substances
Compositions for removing uremic substances during hemodialysis comprising an aqueous slurry containing charcoal, a highly calcium-loaded zeolite cation exchanger, purified urease (which may be bound to a portion of the zeolite, a suspending agent, and op...
04/08/1986
4578191Bio-artificial ultrafiltration pancreas
The bio-artifical pancreas comprises islands of Langerhans contained in a volume defined by two approximately parallel ultrafiltration membranes, able to be formed by two successive portions of the same flat membrane or the same hollow fiber. The surfaces...
03/25/1986
4556488Apparatus for filtering and separating liquid and gaseous media
For filtering and separating liquid and gaseous media, particularly for water desalinization by reverse osmosis, modules filled with membrane cushions are employed that are open at two opposite sides and are inundated within an outer housing by an enterin...
12/03/1985
4545862Desalination device and process
A membrane distillation module is provided with a thin, flexible microporous membrane positioned against an impermeable condensor sheet that is stiffer in bending than the membrane. Distillate vapor diffuses through the membrane from the hot feed flowing ...
10/08/1985
4526690Apparatus for nucleic acid quantification
A multiwell apparatus for the assay of microliter quantities of body fluids is provided which prevents fluid loss by lateral migration or gravity flow through a microporous membrane or ultrafilter. A sample is passed through a membrane to which an antibod...
07/02/1985
4525276Apparatus for separation of immiscible liquids
The inventive liquid separator of laboratory use can overcome the problems in the conventional separatory funnels used for liquid-liquid phase separation. The inventive apparatus comprises (a) a first bottle-like vessel with a mouth, (b) a second bottle-l...
06/25/1985
4501663Filter cartridges and methods and components for making them
Novel membrane filter units are disclosed which are adapted for stacking and bonding into integral, disposable cartridges, optionally including an integral disposable housing. The units comprise a thin plastic support having flat membranes permanently bon...
02/26/1985
4485014Filter assembly for connecting intermediate an epidural cannula and a syringe
An epidural filter for connecting intermediate a syringe and an epidural cannula has a two-part housing formed with an inlet and an outlet. Within the housing a filter membrane is supported, parallel with the direction of fluid flow through the filter, by...
11/27/1984
4477347Portable water purifier
A portable water purifier having a filter housing adapted to contain a replaceable filter assembly to which filter housing is releasably attached an unfiltered water chamber with a pressurizing pump located on the top thereof. A cup member is releasably a...
10/16/1984
4457846Liquid chromatography methods and devices
In the analysis of substances by liquid chromatography, samples to be analyzed are introduced into the chromatography column by being loaded into a fluid permeable section in a cartridge, placing the sample loaded section over the inlet end of the column ...
07/03/1984
4430213Ultrafiltration unit
An ultrafiltration unit for the separation of the colloidal or very fine solid material by filtration through microporous or semipermeable mediums. The unit comprises a filter housing formed by an upper part and a lower part airtightly connected together ...
02/07/1984
4415447Separatory apparatus comprising means for anchoring a semi-permeable membrane to a support member
Separatory, e.g., ultrafiltration apparatus including a plurality of semi-permeable membranes and a plurality of ridge ribbed support members therefor, is provided with means for anchoring said membranes to and between successive supports....
11/15/1983
4390424Device for diffusing matter between two fluids via semi-permeable diaphragms
Apparatus for diffusing matter between two fluids is disclosed, including a stacked configuration of alternating spacing plates and pairs of semi-permeable membranes, the spacing plates including flow passages for each of the fluids so that they can be pa...
06/28/1983
                9    
 
Sign InRegister
Username  
Password   
forgot password?