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| Number | Title | Issue Date |
| 4641083 | Method and apparatus for supervising charges in blast furnace using electromagnetic waves A method and apparatus for supervising a descending speed, thickness of a layer, particle size, and so on of charges in a blast furnace. Coke and ore composing the charges are detected by radiating an electromagnetic wave into the blast furnace. An electr... | 02/03/1987 |
| 4613832 | Fluid filled microwave cavity oscillator for a discontinuity detector system A microwave cavity oscillator comprises a waveguide blocked at both ends, an active device enclosed in the waveguide and a dielectric powder or other fluid filling the remaining space in the waveguide. The microwave cavity oscillator is useful, for exampl... | 09/23/1986 |
| 4607212 | Method and apparatus for detection of knots or the like in sawn lumber A method and an apparatus for detection of knots in lumber by means of microwave radiation. Radiation from a transmitter is directed toward a piece of lumber and the radiation reflected from and/or passed through the piece of lumber is detected by means o... | 08/19/1986 |
| 4532939 | Noncontacting, hyperthermia method and apparatus for destroying living tissue in vivo A noncontacting method and apparatus which uses heat to destroy tumor cells in living tissue. A bidirectionally focused beam of electromagnetic energy, having a pair of electrically and thermally related, spaced focal regions, is positioned so that one of... | 08/06/1985 |
| 4510437 | Apparatus and method for measuring the permittivity of a substance A novel apparatus and method for time-domain tracking of high-speed chemical reactions. The apparatus of the present invention includes an RF heating system for heating a reaction zone and a probe system in the reaction zone for measuring the complex perm... | 04/09/1985 |
| 4506209 | Tracking impedance measuring system A tracking impedance measuring system for measuring the impedance between a signal source such as a radio transmitter and a load such as an antenna includes a directional coupler that obtains a sample of the forward voltage and the reflected voltage. A fi... | 03/19/1985 |
| 4500835 | Method and apparatus for detecting grain direction in wood, particularly in lumber A method and apparatus for detecting grain direction in wood particularly in lumber by means of high frequency radio energy like microwave radiation. The grain direction in lumber can be detected so that knots will cause no significant error to the measur... | 02/19/1985 |
| 4499418 | Water cut monitoring means and method A water cut monitor includes a microwave transmitter which transmits microwave energy through a fluid mixture containing water. An indicator connected to the microwave transmitter and receiving the microwave energy transmitted through the emulsion provide... | 02/12/1985 |
| 4492915 | Method and apparatus for the electronic measurement of the thickness of very thin electrically conductive films on a nonconductive substrate The invention concerns a method for measuring the thickness of very thin, electrically conducting films of the order of 1 to 1000 nanometers and measuring apparatus for performing the method. The thickness of the electrically conducting films is measured ... | 01/08/1985 |
| 4484133 | Microwave moisture sensor Microwave moisture measuring apparatus for on-line monitoring of a paper web in which a source of radiation is measured and directed towards the web. Detectors measure the transmitted and reflected energy, and a microcomputer, also having inputs in accord... | 11/20/1984 |
| 4453125 | Microwave alcohol fuel sensor A microwave alcohol fuel sensor comprises a microwave oscillator, a microwave receiver, and a microwave transmission circuit connected to the oscillator and the receiver. The microwave transmission circuit comprises a dielectric substrate and, a strip lin... | 06/05/1984 |
| 4408156 | Sheet articles of non-conductive material marked for identification purposes, and method and apparatus for identifying such articles A method of producing an identification signal for a sheet article of non-conductive material, which article is marked for identification purposes by the incorporation therein of a small quantity of very thin conductive fibers which are capable of absorbi... | 10/04/1983 |
| 4274048 | Three-dimensional measurement of radiant energy scattering characteristics with a turntable-type scanning interferometer A method and apparatus for measuring radiant energy scattering characteristics of a test panel of dielectric material over a sphere are disclosed. The test panel is supported on a turntable at a position on the axis of the turntable. The turntable has a f... | 06/16/1981 |
| 4255702 | Measurement of radiant energy scattering characteristics with a turntable-type scanning apparatus A method and apparatus for measuring radiant energy scattering characteristics of a test panel of dielectric material over a circular arc are disclosed. The test panel is supported on a turntable at a position on the axis of the turntable. The turntable h... | 03/10/1981 |
| 4070619 | Microstrip configuration with inductive pickup loop for VSWR meter A VSWR meter unit for detecting and measuring the forward and reflected RF voltage wave signals on a coaxial transmission line. The unit is adapted to be electrically inserted in a tubular or coaxial transmission line, having an outer conductor with a coa... | 01/24/1978 |
