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Attorney: Oppedahl & Larson


Number of patents: 90
Last date: June 07, 2005

1      
NumberTitleIssue Date
6903986Method and apparatus for improving the reliability of the reading of integrated circuit fuses
A system is provided for use with an on-chip fuse. If the fuse (40) is to be blown, the system blows the fuse, then performs a test read by comparing it with a larger-than-normal reference resistance (41, 42). If, even using the larger-than-normal refe...
06/07/2005
6007689Apparatus for preparing gels for use in electrophoretic separations and similar applications
An apparatus for the rapid preparation of electrophoresis gels comprises: (a) a housing; (b) a support fixture removably disposed within the housing and adapted to receive a gel holder having an internal gel compartment, the support fixture being optional...
12/28/1999
5900131Method and apparatus for automated electrophoresis using light polarization detector
Changes in polarized light incident on a detection zone within a separation matrix are used to detect optically active molecules within the separation matrix. The separation and detection of optically active molecules within the detection zone is done by ...
05/04/1999
5888731Method for identification of mutations using ligation of multiple oligonucleotide probes
A ligase-based assay which relies only upon knowledge of the wild-type sequence of a gene or gene fragment is used to detect all types of mutations, i.e., point mutations, insertions and deletions. The assay makes use of a set of oligonucleotide probes, w...
03/30/1999
5885431Microgels for use in medical diagnosis and methods of making and using same
An electrophoresis microgel is formed in a gel holder. The gel holder comprises a top substrate, a bottom substrate and a spacer disposed between the top substrate and the bottom substrate. The spacer establishes a separation of from 25 to 250 microns bet...
03/23/1999
5886548Crescent gradient coils
A high-conductivity ceramic coil form with an internal water jacket is used to simplify water cooling for 3-axis MRI gradient coil configurations on a single cylindrical coilform. Crescent-shaped, axially aligned coils are symmetrically employed on either...
03/23/1999
5874938Pointing device with reduced component count
A signal processing system for a strain-gauge pointing device has a reduced parts count and permits the use of relatively inexpensive low-tolerance components. The system can process signals from two or three or more strain gauges, permitting additional i...
02/23/1999
5860099Stored program system with protected memory and secure signature extraction
A controller contains software which, when triggered in some prearranged way such as assertion of an input to the controller, calculates a digital signature for the contents of the protected memory of the controller. The digital signature is preferably ex...
01/12/1999
5855452Method for excavating rock cavities
In a method for excavating rock cavities in the form of substantially cylindrical, vertical or low placed rock cavities for the storage of gas, fluid, solid products or for another purpose, one first, from a transport tunnel (2), excavates an upper circul...
01/05/1999
5849491Method for isolating xylanase gene sequences from soil DNA, compositions useful in such method and compositions obtained thereby
Xylanase DNA is recovered from soil by PCR amplification using degenerate primers. Because of the complexity of the soil samples, it is likely that the recovered product will include more than one species of polynucleotide. These recovered copies may be c...
12/15/1998
5844661Ophthalmic apparatus
An objective refraction measuring system of an ophthalmic apparatus measures a refractive power of an eye to be examined in an objective manner under the condition that a gazing chart of a gazing target system is fixed to the eye to be examined. An arithm...
12/01/1998
5844660Objectives refraction measuring apparatus
An objective refraction measurement apparatus includes a separate chart having a pair of charts arranged separately, an optical system for projecting the separate chart to an eye to be examined through a focusing lens and a diaphragm having a pair of thro...
12/01/1998
5834189Method for evaluation of polymorphic genetic sequences, and the use thereof in identification of HLA types
The allelic type of a polymorphic genetic locus in a sample is identified by first combining the sample with a sequencing reaction mixture containing a polymerase, nucleotide feedstocks, one type of chain terminating nucleotide and a sequencing primer to ...
11/10/1998
5829356Switching device for use in suspended conveyors
Suspended conveyor systems frequently employ threaded spindles as the drive mechanism to transport trolleys within a track. The spindle cooperates with drive blocks positioned adjacent to wheels on the trolleys. To facilitate switching and turning of the ...
11/03/1998
5829104Strap clasp
The invention relates to a clasp (1) for a band or bracelet (2) having two strips (6, 8) articulated with respect to one another by one of their ends across a common hinge (10), having a cover (3) and a base (9) detachably arranged around a common rod (11...
11/03/1998
5830657Method for single-tube sequencing of nucleic acid polymers
Sequencing of a selected region of a target nucleic acid polymer in a genomic DNA sample can be performed in a single vessel by combining the sample with a sequencing mixture containing a primer pair, a thermally stable polymerase such as Thermo Sequenase...
11/03/1998
5812985Space management system
An improved system for space management in retail stores is described. The space management system includes price display labels mounted on rails along the edges of shelves in a store. A communications link between the computer and the labels permits the ...
09/22/1998
5806406Hydraulic piston cylinder
A hydraulic cylinder, comprising a cylindric tube (10) with two end covers (11, 12). One of the end covers (11) is provided with an opening for a piston rod (13) connected to a piston (14) which is displaceable between the end covers. The end covers (11, ...
09/15/1998
5795722Method and kit for quantitation and nucleic acid sequencing of nucleic acid analytes in a sample
A method for quantitative and qualitative analysis of a nucleic acid analyte in a sample suspected to contain the nucleic acid analyte first combines the sample with a control nucleic acid, and two primer pairs, a first primer pair effective to amplify a ...
08/18/1998
5789168Method for amplification and sequencing of nucleic acid polymers
Amplification and sequencing of a selected region of a target nucleic acid polymer are be performed in a single vessel. The sample is added to an amplification mixture containing a thermally stable polymerase and nucleoside feedstocks. Chain terminating d...
08/04/1998
5786142Electrophoresis and fluorescence detection method
An improved electrophoresis and fluorescence detection method for nucleotide sequences comprises a fluorescence sensing region along the path of nucleotide detection, coupled with amplification and integration in an integrator of output signals in the for...
07/28/1998
5776767Virtual DNA sequencer
A virtual DNA sequencer combines a plurality of individual DNA sequencers. Samples of DNA or other nucleic acid from subjects are prepared and allocated in real time to particular lanes or sets of lanes in electrophoresis plates of the individual sequence...
07/07/1998
5776737Method and composition for internal identification of samples
Patient samples are identified by adding to the sample, preferably at the time it is taken, a plurality of identification oligonucleotides. The identification oligonucleotides are co-processed and sequenced at the same time as the sample. The resulting se...
07/07/1998
5770392Method and composition for identifying inhibitors of eukaryotic cell processes
Materials can be assayed for activity as an inhibitor of post-translational protein phosphorylation by adding the material to a growing culture of a prokaryotic organism such as a streptomycete; allowing the culture to grow for a period of time in the pre...
06/23/1998
5769327Nozzle for spreading water fog
A nozzle for generating and distributing water fog through discharge orifices (18), for example for use for extinguishing fires fighting equipment. At least two of the channels converge and collide at a point outside the nozzle, which comprises an attachm...
06/23/1998
5764781Speaker and amplifier system
An improved sound reproduction system employs an amplifier system and a speaker. The system offers greatly improved bass response. The speaker provides two negative feedback signals, one indicative of the current through the speaker voice coil and a secon...
06/09/1998
5749291System for setting date wheels in a postage meter
A date-setting method for use in a postage meter having date wheels includes the steps of setting the date wheels, printing a date on a mail piece, requesting an input indicating whether the date printed on the mail piece is correct, receiving a response ...
05/12/1998
5749318Self-cleaning litter box for animals
A litter box which cleams itself automatically, and separates the soiled litter from the clean litter, storing the soiled litter in a receptacle and replacing the consumed litter by clean reserve litter. The litter box is formed from a sieve (1) configure...
05/12/1998
5746133Postage meter with rotor movement and die cover sensor
A postage meter has an improved means of monitoring the position of the cover providing access to the print rotor. A mechanical latch and associated mechanism is provided responsive to a cam on the print rotor and responsive to the movement of the cover, ...
05/05/1998
5720114Tool for positioning of vinyl corner posts
A tool for aligning vinyl corner posts during installation has a flat, generally L-shaped body member. The body member is formed from first and second leg portions which meet in a 90° angle. An aperture is formed in the interior edge of the body member w...
02/24/1998
5719381Postage meter with hollow rotor axle
A postage meter has a secure housing, an accounting register within the secure housing, and a print rotor the rotation of which defines a paper path. The rotor axle is formed of two halves, and within the two haves is a lengthwise cavity along which setti...
02/17/1998
5716812Methods and compositions for synthesis of oligosaccharides, and the products formed thereby
Mutant glycosidase enzymes are formed in which the normal nucleophilic amino acid within the active site has been changed to a non-nucleophilic amino acid. These enzymes cannot hydrolyze disaccharide products, but can still form them. Using this enzyme, o...
02/10/1998
5712542Postage meter with improved handling of power failure
A postage meter has a print rotor rotated by a motor and the motor is capable of being started and stopped under processor control. State variables are established within a nonvolatile memory. The rotor begins in its home position. When a mail piece such ...
01/27/1998
5712476Electrophoresis and fluorescence detection apparatus
An improved electrophoresis and fluorescence detection apparatus has an electromagnetic radiation sensor juxtaposed with a sensing region. The output signal from the electromagnetic radiation sensor is a current signal, and the current signal is converted...
01/27/1998
5710628Automated electrophoresis and fluorescence detection apparatus and method
Improved detection methods and apparatus which may be used individually or in various combinations enhance the ability of the electrophoresis apparatus to detect fluorophore-labeled materials in short periods of time. One such apparatus comprises a housin...
01/20/1998
5706727Postage meter with improved paper path
A postage meter has the print rotor and platen within a single secure housing, with a letter detection lever along the paper path downstream from the rotor. The letter detection lever is in a spring-loaded coupling relationship with the trigger that trigg...
01/13/1998
5708247Disposable glucose test strips, and methods and compositions for making same
An improved disposable glucose test strip for use in a test meter of the type which receives a disposable test strip and a sample of blood from a patient and performs an electrochemical analysis is made using a working formulation containing a filler, an ...
01/13/1998
5704049Subglobal area addressing for electronic price displays
An electronic price display system has uniquely addressed electronic shelf labels (ESLs) controlled by a central computer or host. To save power and communications channel bandwidth, subglobal addressing is defined which permits the central computer to ad...
12/30/1997
5698233Roll-type press for extruding a filled or a multi-layer strand of fatty compositions
Within a casing (10), on each side of a center plane (A), a feeding channel (26, 28) and a pressure channel (32, 34) are defined. The pressure channels (32, 34) are converging in the direction of a jet arrangement (40). Further, within the casing (10), on...
12/16/1997
5689098Postage meter with improved postal lock
A postage meter has a secure housing and a printing means and accounting register within the secure housing. Formed in the secure housing is postal lock. In the postal lock, a door is movable between first and second positions relative to a cavity. When t...
11/18/1997
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