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Patent No. 5823572

Self Defense Weapon With Memo

A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.

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Class 210/321.75 - Planar membrane


Subclass of Class 210 - Liquid purification or separation
Definition: Apparatus wherein said semipermeable membrane is in an essentially
No. of patents: 379
Last issue date: 06/28/2011


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NumberTitleIssue Date
7967983Liquid dispensing end-piece and liquid packaging and dispensing assembly comprising such an end-piece
This end-piece is of the type including two filtering membranes and support portions for supporting the membranes and channelling the fluid through the membranes. According to one aspect of the invention, it includes a connection portion which is moulded over the su...
06/28/2011
7887703Dialysis apparatus and a method for assembling a dialysis apparatus
The invention relates to a dialysis apparatus, comprising: a body with two planar sides, wells contained in the body, the wells being accessible from one planar side, a plurality of membranes for s...
02/15/2011
7828973Plastic encapsulated tangential flow filter device and methods for making same
Filtration devices that include filtration cassettes that feature a plurality of stacked subassemblies, wherein at least one of the subassemblies includes a porous membrane having a front side and a back side and a perimeter; and an overmolded frame that encapsulate...
11/09/2010
7785466Membrane filtered pipette tip
An injection molded assembly forming a Membrane Pipette Tip having at least one bottom portion including a apex end for receiving a calibrated first volume of fluid, a cavity for holding said volume of fluid and a opening with shoulder for receiving the filter membr...
08/31/2010
7569144Device for the separation of a fluid into at least two fractions, using a plurality of membrane filters, and use thereof
The invention relates to a device for the separation of a fluid into at least two fractions, using a plurality of membrane filters, and to the use thereof. The inventive device comprises at least one sub-assembly (2a, 2b, 2c...
08/04/2009
7431837Mixing vessel and method of use
A mixing vessel contains a septum, dividing a first chamber from a second chamber. By relatively moving the septum with respect to the ends of the vessel, and flowing a fluid through the septum, the fluid is treated as it moves from the first chamber to the second c...
10/07/2008
7415299Monitoring method and/or apparatus
A method and apparatus for substance monitoring. One application is an easy to handle continuous glucose monitor using a group of hollow out-of-plane silicon microneedles to sample substances in interstitial fluid from the epidermal skin layer. The glucose of the in...
08/19/2008
7390673Method and device for identifying volatile substances in solution
The invention relates to a method for fluorimetrically or photometrically identifying gaseous substances or substances, which can be converted into a gaseous state, in samples. Decomposition reactions, optional purification steps, and detection can be carried out in...
06/24/2008
7384550Glaucoma implant having MEMS filter module
Various MEMS filter elements or modules are disclosed, and which may be used in a glaucoma implant (490). One such MEMS filter module (34) includes a first film (70) and a second film (46) that are spaced and interconnected by a plurality...
06/10/2008
7384549Method and apparatus for the filtration of biological solutions
A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low...
06/10/2008
7371325Well for processing a fluid
A well (50) comprising a side wall (10), a sealing ring (40), a rib arrangement (5), and a filter (20), for use in processing a fluid, e.g., by microtitration or microfiltration, is disclosed. ...
05/13/2008
7371322Filtration 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
7364914Method for diluting a fluid and detecting analytes within a diluted fluid
The present invention provides a method and device for processing, sampling, and diluting a fluid and for detecting an analyte within the processed, sampled, and diluted fluid. In the method and device for processing, sampling, and diluting a fluid, an amount of flu...
04/29/2008
7350821Method and system for purging a dispensed fluid within a fluid dispensing system including a filter-free connector apparatus
A connector apparatus is provided which is configured to replace a separation module in a system for dispensing a fluid. When it is desired to purge the system of a dispensed fluid, the connector apparatus, having the same configuration of an inlet and an outlet as ...
04/01/2008
7344576Conditions for fluid separations in microchannels, capillary-driven fluid separations, and laminated devices capable of separating fluids
Methods of separating fluids using capillary forces and/or improved conditions for are disclosed. The improved methods may include control of the ratio of gas and liquid Reynolds numbers relative to the Suratman number. Also disclosed are wick-containing, laminated ...
03/18/2008
7335312Centrifuge 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
7329393Capacity altering device, holder, and methods of sample processing
This invention provides capacity altering devices that facilitate the processing of samples whose volume exceeds the capacity of external sample processing regions (e.g., sample tubes or wells). The invention also provides holders that can be used with such devices,...
02/12/2008
7323040Membrane module for the separation of hydrogen and method for the production thereof
A membrane module for the separation of hydrogen is configured for parallel flows and contains a plurality of planar membrane cells which respectively comprise two hydrogen-selective planar membranes respectively surrounded by a flat membrane frame. An air-permeable...
01/29/2008
7320777PCR sample handling device
A device for handling PCR microcards, each having an array of sample chambers closed by a transparent material on one side thereof, in relation to a PCR instrument, the device including a carrier having an apertured region with an array of holes corresponding in num...
01/22/2008
7320750Centrifuge 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
7318898Polymeric membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow distribution weir. Next, the feed stream is exposed to a first thin film...
01/15/2008
7316779Filtration system and method for obtaining a cytology layer
A filter assembly for separating and collecting a layer of particulate matter (e.g., cells) from a liquid containing the particulate matter (e.g., a biological fluid specimen). The filter assembly has a holder and contiguous inner and outer fluid pervious media. The...
01/08/2008
7314565Method and apparatus for separating aromatic hydrocarbons in an isothermal system
An isothermal method is provided for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that contains a rib member. Next, the feed stream is exposed to a first thin f...
01/01/2008
7314460Extracorporeal pathogen reduction system
The invention relates to an apparatus system and methods for treatment of virus-infected or pathogen-loaded human blood components separated from normal components comprising a separation apparatus and treatment apparatus system that inactivate pathogens in an extra...
01/01/2008
7311880Well-less filtration device
The present invention provides a well-less filtration device that includes a pre-filter layer; a support layer; and at least one layer of solid phase extraction medium disposed between the pre-filter layer and the support layer. At least a portion of the pre-filter ...
12/25/2007
7311831Filtration membrane and method of making same
A filtration membrane and method of making the same wherein the filtration membrane comprises obstructions and/or spacers. ...
12/25/2007
7309458Multi-sided immersion formation of composite structures and method
Sample preparation device and method for desalting and concentrating samples prior to further analysis such as by MALDI TOF and/or electro-spray ionization (ESI) mass spectrometry. The device in accordance with an embodiment of the present invention contains a three...
12/18/2007
7303605Snap together filter
A fluid filter is provided with a snap-together housing for the filter media. The housing is designed with two main parts that are easily snapped together to encapsulate the filter media. The filter housing is substantially cylindrical, and contains an inlet on one ...
12/04/2007
7303681Dynamic membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow distribution weir. Next, the feed stream is exposed to a first thin film...
12/04/2007
7297269Cross-flow filtration cassettes and methods for fabrication of same
This invention relates generally to filtration cassettes, and, more particularly to methods of fabricating cross-flow filtration cassettes. Cassettes of the invention are characterized, in part, by a series of sealing channels which selectively seal the filtrate and...
11/20/2007
7294274Filtration 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
7288195Method and apparatus for directly sampling a fluid for microfiltration
A process for filtering a fluid is provided. The process includes providing a filtration cell having a filter membrane, a base configured to receive filtrate passing through the membrane, and a flow channel open to the filter membrane. A flow of the fluid is provide...
10/30/2007
7282147Cleaning 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
7282367Method for verifying amount of sample solution, method for controlling measurement system and method for measuring concentration of solution in apparatus for measuring optical characteristic
A verification method of a sample solution amount includes the steps of: detecting at least one of a transmitted light component, a scattered light component and a reflected light component of a light by a photosensor while irradiating a sample solution, which is be...
10/16/2007
7279215Membrane modules and integrated membrane cassettes
The invention features integrated membrane assemblies for selectively transferring a constituent to or from a fluid. The assemblies include two or more flat sheet membrane elements and at least one common manifold connected to the interior regions of the membrane el...
10/09/2007
7279134Microfluidic devices with porous membranes for molecular sieving, metering, and separations
Microfluidic devices with porous membranes for molecular sieving, metering, and separation of analyte fluids. In one aspect, a microfluidic device includes a substrate having input and output microfluidic channel sections separated by a porous membrane formed integr...
10/09/2007
7264724Fluid path control element for fluid processing module
A fluid path control element which when stacked alternatively with a fluid porous sheet can be formed into a filtration module. The fluid path control element comprises a porous membrane having sealed to a portion of its periphery a thermoplastic element that extend...
09/04/2007
7247498Device to alternately supply a fluid to an analyzer
Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A samplin...
07/24/2007
7245845Printing apparatus, information processing apparatus, and printing system
An apparatus for executing a printing process on the basis of a print job from an external apparatus, comprises a post-processing unit which can apply post-processing for printed paper sheets using paper sheets prepared independently of the printed paper sheets; a d...
07/17/2007
7226540MEMS filter module
Various MEMS filter elements or modules are disclosed. One such MEMS filter module (34) includes a first film (70) and a second film (46) that are spaced and interconnected by a plurality of supports (78). A plurality of first flow ports ...
06/05/2007
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