Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 5676692 | Focussed ultrasound tissue treatment method A method of treatment of tissue with focussed ultrasound comprises placing adjacent the tissue to be treated a reflector of ultrasound or an ultrasound energy conversion device which converts received ultrasound energy to heat, stores the heat and then re... | 10/14/1997 |
| 4986814 | One-punch catheter A catheter assembly comprises a stylus including a first generally conically shaped end tapering to a point at a predetermined angle and a second end. A cannula includes a first lumen for slidably receiving the stylus. The cannula includes a first end hav... | 01/22/1991 |
| 4917095 | Ultrasound location and therapy method and apparatus for calculi in the body An apparatus and a method for non-invasively decomposing a calculus in a human body include a mechanism for, and the step of, locating the calculus, a mechanism for, and the step of, delivering to the site of the calculus a chemical species known to reduc... | 04/17/1990 |
| 4872346 | Multiple frequencies from single crystal A method and an apparatus for ultrasound imaging at different frequencies using a single ultrasound transducer. The transducer has a single characteristic frequency. The method and apparatus involve driving the transducer with pulses having different rise... | 10/10/1989 |
| 4845125 | Chemolytic EDTA-citric acid composition for dissolution of calculi An improved composition for dissolution of renal calculi is disclosed. The composition includes citric acid, preferably at about 10 to about 15% by weight, and an effective amount of a pharmacologically acceptable chelating agent such as EDTA in a sterile... | 07/04/1989 |
| 4807633 | Non-invasive tissue thermometry system and method It has been observed that attenuation of a transmitted or reflected beam of ultrasound in tissue irradiated with such a beam having a power intensity in the tissue in the non-linear range will change measurably as the tissue temperature changes. Based upo... | 02/28/1989 |
| 4664121 | Intraoperative scanner A heat-sterilizable ultrasonic surgical scanner includes an ultrasonic transducer and a permanent magnet motor for moving the transducer along an arcuate path. The scanner further includes a housing for the ultrasonic transducer and the motor. The housing... | 05/12/1987 |
| 4582061 | Needle with ultrasonically reflective displacement scale A puncturing device for insertion into the body, which has an ultrasonically coded displacement scale of gaseous inclusions regularly spaced along the length of the device. Owing to the acoustic reflectiveness of the gaseous inclusions, the precise locati... | 04/15/1986 |
| 4572200 | Intraoperative scanner A heat-sterilizable ultrasonic surgical scanner includes an ultrasonic transducer and a permanent magnet motor for moving the transducer along an arcuate path. The scanner further includes a housing for the ultrasonic transducer and the motor. The housing... | 02/25/1986 |
| 4566331 | Ultrasonic driver and receiver A system for driving an ultrasonic transducer for use in ultrasound imaging of a target includes a charging voltage generator, a first impedance for coupling the charging voltage generator to a terminal of the transducer to permit the transducer to charge... | 01/28/1986 |
| 4443816 | Digital video image splitter A digital video image splitter permits the top portion of a closed-circuit television (CCTV) display to be shifted right (delayed) or left (advanced) with respect to the stationary bottom portion of the display. The user controls the vertical level (dista... | 04/17/1984 |
| 4347850 | Direct water coupling device for ultrasound breast scanning in a supine position A direct water coupling device for ultrasound scanning of the human breast in a supine position. A tank, which has an open top and an open bottom and has a bottom edge which is shaped so as to conform to the shape of a human body about the perimeter of th... | 09/07/1982 |
| 4270388 | Method and apparatus employing zero order Raman-Nath diffraction information to visualize longitudinal character of an acoustic wave field A method and apparatus employing zero order Raman-Nath diffraction information to visualize the longitudinal character of an acoustic field. The method includes the steps of directing a first portion of a beam of coherent light at normal incidence to a re... | 06/02/1981 |
| 4235749 | Ammonia synthesis catalysts and process of making and using them The activity of conventional iron-based ammonia synthesis catalysts is enhanced by supplying alkali to the finished catalyst by vapor transpiration, either during preparation of the catalyst or during its use in synthesis operation, or during both. The ca... | 11/25/1980 |
| 4223228 | Dental x-ray aligning system A dental x-ray aligning system in which various Hall effect sensors, mounted on a dental x-ray apparatus, detect the magnetic field strength resulting from a magnet which is attached to an x-ray film plate located within the mouth of a patient. By measuri... | 09/16/1980 |
| 4074223 | Peak detector for resolution enhancement of ultrasonic visualization systems A digital electronic system for improving the resolution and dynamic range-handling capacity for received ultrasound in reflection or transmission imaging system. This system provides a means for preventing loss of structural detail in the display by mini... | 02/14/1978 |
| 4025431 | Apparatus for cleaning and aerating water within an aquarium tank A filter for an aquarium tank and apparatus for cleaning and aerating water within the tank. A pair of spaced apart but perforated walls are located above and spaced from the bottom wall of the tank forming an enclosure. Filter material is located between... | 05/24/1977 |
| 3974826 | Display circuitry for ultrasonic imaging Ultrasonic probe apparatus for real time B-mode sector scan examination of a cross section of a structure such as the human heart. A transducer is pivotally mounted near an end of an elongated housing, and linkage means are provided in the housing for osc... | 08/17/1976 |
| 3955561 | Cardioscan probe Ultrasonic probe apparatus for real time B-mode sector scan examination of a cross section of a structure such as the human heart. A transducer is pivotally mounted near an end of an elongated housing, and linkage means are provided in the housing for osc... | 05/11/1976 |
| 3951140 | Ultrasonic therapy apparatus and method An ultrasonic apparatus is used for diagnosis and therapy of patients being treated for post-myocardial infarction. The instrument administers treatment prescribed by the physician in response to signs and symptoms continuously being monitored by the diag... | 04/20/1976 |
