Class 204/403.07 - For blocking passage of macromolecules (molecular weight greater than or equal to 8,000)

Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Apparatus in which the membrane is used to prevent passage
No. of patents: 32
Last issue date: 08/12/2008

Number	Title	Issue Date
7410709	Bio-battery A bio-battery includes a biomolecular energy source, a first electrode and a second electrode. In some configurations, a bio-battery may also include a first cell containing the first electrode and the biomolecular energy source, and a second cell having a reducible...	08/12/2008
7361609	Mask patterns for semiconductor device fabrication and related methods Methods of forming an integrated circuit device may include forming a resist pattern on a layer of an integrated circuit device with portions of the layer being exposed through openings of the resist pattern. An organic-inorganic hybrid siloxane network film may be ...	04/22/2008
7316700	Self optimizing lancing device with adaptation means to temporal variations in cutaneous properties A lancing device, an embodiment of which controls the advancement and retraction of a lancet by monitoring the position of the lancet in conjunction with a lancet controller which incorporates a feedback loop for modulating the lancet driver to follow a predetermine...	01/08/2008
7287318	Biosensor A biosensor is provided that comprises a plate element with a pre-determined reaction zone and a recess positioned adjacent to the reaction zone. The biosensor also comprises a reagent that is positioned on the reaction zone. In preferred embodiments, the recess cir...	10/30/2007
7208089	Biomimetic membranes Biological membrane proteins are incorporated into a co-polymer matrix to produce membranes with a wide variety of functionalities. In one form of the invention, a composite membrane incorporates two different proteins which cooperate to produce electricity from lig...	04/24/2007
7192450	Porous membranes for use with implantable devices A membrane for implantation in soft tissue comprising a first domain that supports tissue ingrowth, disrupts contractile forces typically found in a foreign body response, encourages vascularity, and interferes with barrier cell layer formation, and a second domain ...	03/20/2007
7182853	Redox control/monitoring platform for high throughput screening/drug discovery applications The invention is a redox control and monitoring platform that is to be used in conduction with another detection scheme. The platform includes a portion of an electrochemical control. The electrochemical control can be operated to control and measure the redox envir...	02/27/2007
7169272	Microfabricated recessed disk microelectrodes: characterization in static and convective solutions Construction and characterization of microfabricated recessed disk microelectrodes (RDMs) of 14 and 55 μm diameter are reported. The work reported here makes several new contributions to the current literature on microfabricated RDMs. Hybrid blamers were constructe...	01/30/2007
7134999	Optimized sensor geometry for an implantable glucose sensor An implantable sensor for use in measuring a concentration of an analyte such as glucose in a bodily fluid, including a body with a sensing region adapted for transport of analytes between the sensor and the bodily fluid, wherein the sensing region is located on a c...	11/14/2006
6977032	Biosensor A biosensor including an insulating base plate, an electrode system, a cover for covering the insulating base plate, at least one reaction layer, a sample solution supply pathway communicating with an air aperture at a terminal end side, a sample solution supply par...	12/20/2005
6966977	Biosensor A sensor including an insulating base plate; an electrode system, provided on the base plate, having a measuring electrode and a counter electrode; a reaction layer including at least an oxidoreductase and an electron mediator; a sample solution supply pathway inclu...	11/22/2005
6706160	Chemical sensor and use thereof A chemical sensor selectively detects an analyte in a solution. The sensor comprises a flow-through chamber, a selective membrane, a transducer, an inlet for a liquid flow containing a recognition element, and an outlet. To detect an analyte in a solution, a recogni...	03/16/2004
6695958	Electrochemical sensor The invention relates to a sensor for detecting substance concentration or activity or for determining the presence of substances based on electrochemical reactions. The electrochemical sensor comprises an electrode with surfaces inside the electrode, whe...	02/24/2004
6086748	Liposome enhanced immunoaggregation assay and test device A test device for detecting or quantifying an analyte in a test sample includes an absorbent material having separate contact and measurement portions. The contact portion is positioned at or proximate to a first end of the absorbent material. The measure...	07/11/2000
5921922	Measuring of bloodgases A method and an equipment for determining components, particularly pH, pO2 and pCO2 in blood. In order to facilitate the determination of blood gases, one sensor is used for measurement of more than one component. The components are...	07/13/1999
5718816	Locking sensor cartridge with integral fluid ports electrical connections, and pump tube The present invention is a sensor cartridge into which sensors are installed. The sensor cartridge allows the sensors to be easily and reliably installed into a blood analyzer. The sensor assembly has an electrical connector mounted on the rear side of th...	02/17/1998
5706807	Sensor device covered with foam membrane An implant is provided with an open-celled silicone elastomer foam outer layer. The implant may be formed by compressively deforming beads mixed with liquid elastomer in a mold containing a preformed support structure. The elastomer is cured and the beads...	01/13/1998
5469846	Implantable non-enzymatic electrochemical glucose sensor A non-enzymatic implantable blood glucose detector. The detector makes use of a non-reactive tin oxide semiconductor measurement electrode which is suitably energized by an electrical power source. Variations in current density at the measurement electrod...	11/28/1995
5387327	Implantable non-enzymatic electrochemical glucose sensor A non-enzymatic implantable glucose blood detector. The detector makes use of a non-reactive tin oxide semiconductor measurement electrode which is suitably energized by an electrical power source. Variations in current density at the measurement electrod...	02/07/1995
5378344	Ion sensor Disclosed is an ion sensor with its electrode covered with a water-repelling organic chemically adsorbed film, which is formed with at least one hole permitting the passage of ions and preventing the passage of biopolymers, thereby accurately measuring io...	01/03/1995
5244561	Process and apparatus for the electrochemical determination of pCO₂ in blood In a blood gas analyzer, a measurement liquid, advantageously high-purity water, is fed from a suitable vessel to a diffusion cell in which the measurement liquid is brought into contact via a diffusion membrane with the blood sample to be tested. When th...	09/14/1993
5200051	Wholly microfabricated biosensors and process for the manufacture and use thereof An efficient method for the microfabrication of electronic devices which have been adapted for the analyses of biologically significant analyte species is described. The techniques of the present invention allow for close control over the dimensional feat...	04/06/1993
5160604	Toxic substance-detecting system with fixed microorganism membrane for water quality-monitoring A toxic substance-detecting device detects toxic substances in water by use of a microorganism sensor to ascertain the safety of affluents flowing into sewage-treating processes, environmental waters such as rivers, and waters flowing into water purificat...	11/03/1992
5000180	Polarographic-amperometric three-electrode sensor For a potentiostatically operable, polarographic-amperometric sensor, in particular for biomedical use, wherein a working electrode (5) and a reference electrode (4) are covered by an electrolyte layer (9) which is separated from the medium to be measured...	03/19/1991
4808292	Arrangement for stabilizing a gas-reference electrode In a catheter or hollow needle type electrolytic measuring device having a measuring electrode and a gas reference electrode, an arrangement for stabilizing the operation of the gas reference electrode includes a lipophile membrane coating a part of the g...	02/28/1989
4789436	Method and apparatus for nondestructive in vivo measurement of photosynthesis A device for in situ, nondestructive measurement of photosynthesis in live plants and photosynthetic microorganisms is disclosed which comprises a Clark-type oxygen electrode having a substantially transparent cathode comprised of an optical fiber having ...	12/06/1988
4534355	Electrochemical sensor employing a gas-permeable hydrophilic polyurethane membrane A device for use in determining blood gas which employs a membrane of material permeable to blood gas to be determined characterized in that the membrane is hydrophilic polyurethane is described....	08/13/1985
4492622	Clark cell with hydrophylic polymer layer An electro-chemical cell for determining a particular property or component of a fluid includes a cathode electrode, an anode electrode spaced from the cathode, an electrolyte filling a space containing the cathode and anode electrodes, a selectively perm...	01/08/1985
4432365	Physiological sensing unit Disclosed herein is a physiological, electrically heated, thermostatically controlled sensing unit of the type used in the medical field for measuring blood contents, such as oxygen. A typical unit comprises a housing for application to the skin of a livi...	02/21/1984
4413627	Polarographic catheter probe A polarographic catheter-shaped probe for determining analytical data of logical fluids of human beings, of animals, or of plants, and having a cathode, an anode and an electrolyte connecting the two, which are surrounded by a flexible sheath sealed in t...	11/08/1983
4384936	System for determining the concentration of an L-amino acid in fermentation Electrochemical method for determining the concentration of a carbon source and L-amino acid in a fermentation medium or cultured broth by contacting a microbial electrode consisting of an oxygen-sensitive electrode or a carbon dioxide gas-sensitive elect...	05/24/1983
3966580	Novel protein-immobilizing hydrophobic polymeric membrane, process for producing same and apparatus employing same A protein-immobilizing hydrophobic polymeric membrane comprising an organic, hydrophobic polymeric substrate with a specific protein reactive group pendant therefrom in preselected concentration is disclosed. The protein reactive groups is a free group of...	06/29/1976

PatentStorm

Quotables

PatentStorm News

Class 204/403.07 - For blocking passage of macromolecules (molecular weight greater than or equal to 8,000)