Class 148/509 - Magnetic or electrical property

Subclass of Class 148 - Metal treatment
Definition: Process wherein a magnetic or electrical property is measured,
No. of patents: 36
Last issue date: 04/29/2008

Number	Title	Issue Date
7364993	Method of enhancing the photoconductive properties of a semiconductor A semiconductor material with photoconductive properties and a method of the semiconductor, wherein a base material is grown and then annealed post-growth at a temperature of 475° C. or less. It has been found that be annealing at temperatures of 475° C., or less ...	04/29/2008
7357844	Soft magnetic metallic glass alloy Disclosed is a soft magnetic Fe—B—Si-based metallic glass alloy with high glass forming ability which has a supercooled-liquid temperature interval (ΔTχ) of 40 K or more, a reduced glass-transition temperature (Tg/Tm) of 0.56 o...	04/15/2008
7354492	Method for optimising the production technology of rolled products The inventive method is used for optimising a hot and/or cold strip mill process. Said method consists in discreetly measuring the technological parameters of a strip milling and the angular rates of the working rollers of mill stands and table rollers, in defining ...	04/08/2008
7348771	Method for verifying sensor condition Sensor condition verification may be performed on electromagnetic sensors and sensor arrays mounted to a material surface. The sensors typically have a periodic winding or electrode structure that creates a periodic sensing field when driven by an electrical signal....	03/25/2008
7313485	Method of estimating oxidation progression in coated turbine components The claimed invention relates to a method for determining the extent of an oxidation reaction of a coated metallic turbine component within a turbine, comprising determining a plurality of reference oxidation rates for a plurality of locations on the turbine compone...	12/25/2007
7241349	Nondestructive evaluating method for aged deterioration in austenitic stainless steel A nondestructive evaluating method for aged deterioration in austenitic stainless steel comprises an information obtaining step for previously obtaining a relationship between an applied stress σ and the first ratio Ms/χH* between a saturation magnetiza...	07/10/2007
7238244	Nitriding of iron and steel parts in salt bath having improved corrosion resistance A new nitriding process by using a salt bath to produce iron and steel parts having excellent abrasion resistance and corrosion resistance includes forming an iron lithium complex oxide layer at the outermost surface of the iron part by immersing the iron and steel ...	07/03/2007
7196894	Method and a device for demagnetising objects The method according to the invention for demagnetization is effected in two separate steps. Firstly magnetically hard locations, such as weld seams, pressure locations etc., of an object to be demagnetized is pre-treated locally with high fields by way of choke coi...	03/27/2007
7175720	Non-destructive testing method of determining the depletion of a coating It is disclosed a method of measuring the thickness and/or the depletion of Al and Cr of a γ/γ′ MCrAlY-coating after the use in a high temperature environment, the γ/γ MCrAlY-coating exhibiting a non-equilibrium γ/γ′-microstructure at a temperature lower t...	02/13/2007
7150798	Non-destructive testing method of determining the service metal temperature of a component It is disclosed a method of determining the exposure temperature of Al and Cr of a γ/γ′ MCrAlY-coating after the use in a high temperature environment, the γ/γ′ MCrAlY-coating exhibiting a non-equilibrium γ/γ′-microstructure at a temperature lower than t...	12/19/2006
6956189	Alarm and indication system for an on-site induction heating system An induction heating system having a fluid cooling unit, a power source, an induction heating device, a controller, and an alarm system to place the system in a safe condition when an improper operating condition is detected. The induction heating system may have a ...	10/18/2005
6551422	Method and apparatus for treating metal An apparatus for treating metal which is capable of selectively monitoring and controlling various aspects of a multi-staged metal treatment process to more accurately and reliably administer treatment. The apparatus comprises a first stage for cleaning a...	04/22/2003
6338765	Ultrasonic impact methods for treatment of welded structures This invention provides methods of treatment for work products of materials such as steel, bronze, plastic, etc. and particularly welded steel bodies by pulse impact energy, preferably ultrasonic, to relax fatigue and aging and extend expectant life. The ...	01/15/2002
6176944	Method of making low magnetic permeability cobalt sputter targets The present invention provides a high purity cobalt sputter target having a single phase h.c.p. structure and a magnetic permeability less than the intrinsic magnetic permeability of the material. Substantially pure cobalt is cast and slowly cooled, such ...	01/23/2001
5698988	Method and device of detecting a deterioration A method and device of readily detecting deterioration of a sample at low cost, which do not require any maintenance and monitoring of the sensor properties, and accordingly can decrease a load assigned to a system side. A conductive sensor having a pair ...	12/16/1997
5527377	Manufacturing method of metal or alloy Conductivity distribution on the cross section of metal or alloy is measured by an eddy current type conductivity meter and conductivity distribution contour map is prepared. Based on the pattern of this conductivity distribution contour map, heat history...	06/18/1996
5458703	Tool steel production method A tool steel production method and a tool steel are disclosed in this invention. The method consists of following two steps: 1. Toughness (Ch) of the tool steel is evaluated from a formula: Ch=f(Vp, H, T) after estimating Vp, a square sum of output voltage of total...	10/17/1995
5443665	Method of manufacturing a copper electrical conductor, especially for transmitting audio and video signals and quality control method for such conductors A method of manufacturing an improved conductor wire, especially for use as wiring in audio/video devices is disclosed. The conductor consists of copper having a high purity of at least 99.9 wt. %. High purity copper starting material is formed as a rod w...	08/22/1995
5405459	Production process for producing hollow steel tube of high strength A production process for producing a hollow steel tube of a high strength includes the steps of a tube preparation step of producing a seamless steel tube of a heavy thickness containing flaws of less than 0.25 mm in depth in an inner periphery thereof, a...	04/11/1995
5385618	Non-magnetic alloy A non-magnetic alloy of a volume Vcu of copper and a volume Vmn of manganese. Vmn/Vcu is made equal to -Xcu/Xmn where Xcu is the susceptibility of the copper and Xmn is the susceptibility of the manganese. Vmn/Vcu is experimentally predicted to be 1.04 pe...	01/31/1995
5250776	Apparatus and method of measuring temperature A method and apparatus for measuring the temperature and heating rate of a workpiece during the induction heating cycle by inducing and detecting a plurality of eddy current pulses at varying frequencies during a short power interruption to the induction ...	10/05/1993
5190600	Method of monitoring a heat treatment with carbon penetration A probe (14) comprises a tubular electrical conductor (15) supported by a sleeve of insulating material (16). The two ends of the conductor are connected to couplings (23, 24) for the circulation of a reducing gas through the entire length of the conducto...	03/02/1993
5174832	Method for contactless digital measuring of the displacement or position of a movable piece A method for manufacturing a device for contactless and digital measurement of a linear or angular condition of a first piece with respect to a second piece. A series of ferromagnetic encoding marks are provided onto a non-magnetic substrate of one of the...	12/29/1992
5055144	Methods of monitoring precipitates in metallic materials A method and apparatus are provided for monitoring in situ the transformation of some fraction of a starting material to another material during the course of a thermal treatment. The starting material is heated to a preselected temperature and its resist...	10/08/1991
5035142	Method for vibratory treatment of workpieces and a device for carrying same into effect A method for vibratory treatment of workpieces involves repeatedly exiting a workpiece at its resonant frequencies of various harmonics by an unbalance vibration exciter connected to an electric motor. The race of one of the bearings of the motor armature...	07/30/1991
5013370	Method for localization of tensile residual stress and product produced thereby A metallic object is treated to produce tensile residual stress in a known localized area of the metallic object. A metallic object having at least one portion substantially free of tensile residual stress is provided, and a localized area adjacent to or ...	05/07/1991
4675057	Method of heat treating using eddy current temperature determination A method and apparatus for the heat treating of quench hardenable ferrous alloy workpieces utilizing periodic eddy current excitation and reflection to determine the in-line cooling rate from the critical temperature of the workpiece material and comparin...	06/23/1987
4595427	Annealing process control method and apparatus A method and an arrangement for following and controlling the progress of heat treatment of cold worked metals in an annealing furnace uses the changing electrical resistivity of the cold worked metal during the annealing process as a process control para...	06/17/1986
4428782	Production of aluminium alloy strip In the heat treatment of aluminium alloy strip, in which hardening of the material is effected by heat treatment to dissolve pre-existing precipitates in the metal matrix followed by quenching and ageing, the electrical conductance of the strip after quen...	01/31/1984
4427463	Method of and device for controlling and cooling of a continuous rolled member, e.g. a wire The temperature of hot-rolled wire is controlled by passing the wire through a primary coil and a secondary coil continuously while energizing the primary coil with a high frequency alternating current (preferably 100 kHz) so that a temperature-control vo...	01/24/1984
4407682	Method of plastic working of metal materials Method of thermal plastic working of metal materials whereby a material is heated or cooled with measurements being made of variations in the metallographical condition of the material which may occur as the temperature of the material is varied due to th...	10/04/1983
4396886	Document authentication by means of exchange-anisotropic magnetic material A process for authenticating recording media which are to be safeguarded against falsification and which possess discrete regions of an exchange-anisotropic magnetic material, by comparison of the polarity of a residual magnetization which is left over, b...	08/02/1983
4394193	Method and device for the continuous, contactless monitoring of the structure state of cold strip Internal structure of a metal strip is monitored by applying cyclically varying magnetic flux to the strip and sensing the flux induced in the strip. Signals corresponding to the magnetic field intensity of the applied cyclically varying field and to the ...	07/19/1983
4338145	Chrome-tantalum alloy thin film resistor and method of producing the same A chrome-tantalum thin film resistor having a chrome-tantalum alloy thin film containing 10 to 95 atomic % of chrome. By subjecting this chrome-tantalum alloy thin film to heat treatment at temperatures not higher than 900° C., a stable resistor can be o...	07/06/1982
4240878	Method of forming a platinum layer on tantalum A method of platinizing and heat treating tantalum metal is described. The platinizing of tantalum is accomplished by placing a piece of conductive corrosion resistant metal and a tantalum workpiece as electrodes in a platinizing solution. The electrodes ...	12/23/1980
4042427	Process for controlling fused salt nitridation of metals with a solid electrolyte electrode A process for controlling the nitriding effect of a nitriding bath of a salt melt containing alkali cyanate for the nitridation of iron and iron alloys wherein the nitriding effect of the bath is maintained in a specific range by determining the voltage o...	08/16/1977

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Class 148/509 - Magnetic or electrical property