"There is no reason anyone would want a computer in their home."
Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
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| Number | Title | Issue Date |
| 4037102 | Thin-film superconductor device A thin-film superconductor device is disclosed which includes a superconductor film having one or more channels or regions of reduced width. The channel areas define predetermined volumes of superconductive material which is switched from its superconduct... | 07/19/1977 |
| 4034222 | System for measuring radiation doses in radiotherapy apparatus A system for measuring radiation doses in radiotherapy comprises two identical metering networks energized in parallel from a common radiation source, each network including an integrating amplifier whose time constant is variable by the short-circuiting ... | 07/05/1977 |
| 4031374 | Error correction system for random access memory An error correction system is provided for a random access memory system of the magnetic core or plated wire type, and which serves to render the memory system immune to the effects of nuclear radiation, and the like. The system of the invention includes ... | 06/21/1977 |
| 4028549 | Synchronized accumulating radiodetector A synchronized accumulating radiodetector comprises a series of longitudinally connected counting tubes of equal inner volume, a plurality of switching units adapted to be synchronized with the flow speed of radioactive substance traveling with reference ... | 06/07/1977 |
| 4027661 | Pressure sensor A pressure sensor apparatus primarily for sensing pressure in a body cavity such as the cranium, bladder or vena cava of an animal or human comprising a housing having a bellows defining a chamber within the housing. Means is provided for communicating pr... | 06/07/1977 |
| 4025788 | Radiometric analyzer A radiometric analyzer for measuring the characteristic values of a sample by radiation includes a plurality of radiation measuring subsystems having different ratios of sensitivities to the elements of the sample and linearizing circuits having inverse f... | 05/24/1977 |
| 4024395 | Sample changer having modular track assembly Disclosed is an automatic sample changer for sequentially operating on a plurality of samples housed in test tubes, circulated around a continuous track, and sequentially associated with a radiation counting device by way of an elevator mechanism. The con... | 05/17/1977 |
| 4022190 | Apparatus for sensing pressure A pressure sensor apparatus primarily for sensing pressure in a body cavity such as the cranium, bladder or vena cava of an animal or human comprising a housing having a diaphragm dividing the interior of the housing into two chambers. A member containing... | 05/10/1977 |
| 4021667 | High speed pulse processing Method and apparatus for first converting energy pulses, such as from the energy-dispersive detector of an emission spectroscopy system, into multiple ramp signals, the ramps of which are parallel with the vertical distance between the ramps being proport... | 05/03/1977 |
| 4020329 | Apparatus for radiation dose measurement An apparatus for the direct measurement of total radiation dose from the difference in electrochemical potential between an unirradiated solution containing known concentrations of ceric and cerous ions and a gamma or electron irradiated solution initiall... | 04/26/1977 |
| 4019057 | Device for determining the spatial distribution of radioactivity within an object A method and apparatus designed for the purpose of determining quickly and with high resolution the spatial distribution of radioactivity within an object emitting radioactive particles, especially those of low energy. A gas-filled position sensitive dete... | 04/19/1977 |
| 4016422 | Radiation dosimetry by measurement of polarization and depolarization currents This invention provides a method of measuring exposure to radiation, particularly x-rays, gamma rays and other forms of penetrating radiation. A dielectric body is provided and is equipped with a pair of electrodes on opposite sides thereof. In accordance... | 04/05/1977 |
| 4016425 | Methods and apparatus for optimizing the response of transducers Methods and apparatus for optimizing the response of a radiation detecting device such as a cold cathode discharge tube are disclosed. The tube is energized at each instant of repeated sequences of successive time instants which are fixed in time relative... | 04/05/1977 |
| 4016419 | Non-dispersive X-ray fluorescence analyzer A non-dispersive fluorescence x-ray analyzer apparatus and method for measuring the concentration of an element contained in a sample. The apparatus has an x-ray source which directs x-rays against a sample to be analyzed and a reference sample which are ... | 04/05/1977 |
| 4006735 | Pressure sensor apparatus A pressure sensor apparatus primarily for sensing pressure in a body cavity such as the cranium, bladder or vena cava of an animal or human comprising a housing having non-radioactive fluids contained in two spaced apart regions of the housing. A radioact... | 02/08/1977 |
| 4001589 | Radiometric analyzer with plural radiation sources and detectors A radiometric analyzer for measuring characteristics of a material by radiation comprises a plurality of systems in which each consists of a radiation source and a radiation detector which are the same in number as the number of elements of the molecule o... | 01/04/1977 |
| 4001590 | Radiation flux measuring device A radiation flux measuring device is described which employs a differential pair of transistors, the output of which is maintained constant, connected to a radiation detector. Means connected to the differential pair produce a signal representing the log ... | 01/04/1977 |
| 3988587 | Method and apparatus for indicating the radioactive decay products of radium in an environment An improved method and apparatus for providing an indication of the radiation activity of the radioactive decay products of radium in an environment wherein the alpha particle activity and the beta particle activity at a test site are detected and the det... | 10/26/1976 |
| 3986029 | Method for controlling uranium enrichment systems A method for controlling the operation of uranium enrichment systems in which gaseous uranium compounds are processed. The method comprises separating at one or a plurality of precipitation points in the system the process uranium gas and/or its secondary... | 10/12/1976 |
| 3984690 | Circuitry for use with an ionizing-radiation detector An improved system of circuitry for use in combination with an ionizing-radiation detector over a wide range of radiation levels includes a current-to-frequency converter together with a digital data processor for respectively producing and measuring a pu... | 10/05/1976 |
| 3977391 | Pressure sensor apparatus A pressure sensor apparatus primarily for sensing pressure in a body cavity such as the cranium, bladder or vena cava of an animal or human comprising a Bourdon or bellows type pressure gauge connected to a flexible member such as a metallic disc or corru... | 08/31/1976 |
| 3971938 | Method of generating electricity from radiant energy called variable polarizability capacity generator The elecric capacitance of a condenser changes when electromagnetic radiation reacts with the dielectric material of the condenser causing an increase in dielectric constant of unique dielectric material. This increase is due to electron polarization incr... | 07/27/1976 |
| 3965354 | Resistive anode image converter An apparatus is disclosed for imaging soft x-ray and ultraviolet electromagnetic radiation and charged particles. The apparatus includes a pair of microchannel electron multiplier plates that are connected in a cascaded chevron configuration which interce... | 06/22/1976 |
| 3959653 | Fast charge digitizer and digital data acquisition system for measuring time varying radiation fields A radiation measuring instrument including a fast charge digitizer and a digital data acquisition system has been developed. The fast charge digitizer includes a charge integrator connected to a conventional ionization chamber which generates an output cu... | 05/25/1976 |
| 3955085 | Thin film tritium dosimetry The present invention provides a method for tritium dosimetry. A dosimeter comprising a thin film of a material having relatively sensitive RITAC-RITAP dosimetry properties is exposed to radiation from tritium, and after the dosimeter has been removed fro... | 05/04/1976 |
| 3953736 | Method of and apparatus for measuring the thickness of objects Disclosed is a method of and an apparatus for measuring the thickness of an object, usually a metal strip, by using a radiation beam and digital techniques and, more generally, a method of linearization of an exponential function which can be advantageous... | 04/27/1976 |
| 3949210 | Semiconductor gamma radiation detector A gamma radiation detector comprises a semiconductor body and two metal electrodes attached to two spaced surface zones of said semiconductor body, said detector being characterized by the combination of the following features: (a) The semiconductor body ... | 04/06/1976 |
| 3940617 | Method for nondestructive fuel assay of laser fusion targets A method for nondestructively determining the deuterium and tritium content of laser fusion targets by counting the x rays produced by the interaction of tritium beta particles with the walls of the microballoons used to contain the deuterium and tritium ... | 02/24/1976 |
| 3936636 | Method of producing a representation of a planar section of a body using scanning radiology In radiological apparatus, edge values derived by monitoring the radiation passed through a body along many co-planar paths are subjected to a transformation process, such as a convolution integral or Fourier transform process, in order to evaluate the ab... | 02/03/1976 |
| 3935457 | Dielectric material for dosimeters A dosimeter having a dielectric material such as sapphire wherein the efficiency as measured by mean drift distance and trapping efficiency is increased by making use of a dielectric material in which the total active impurity does not exceed 50 ppm and i... | 01/27/1976 |