Quotables
"For a list of all the ways technology has failed to improve the quality of life, please press three."
Alice Kahn
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4449537 | Respiration monitor A respiration monitor for detecting effective respiration of a patient includes circuitry for suppressing the indication of unwanted signals due to heart activity, noise and flat breathing. A first threshold circuit is provided for increasing the sensitiv... | 05/22/1984 |
| 4404845 | Thermal regulator for liquid chromatographs A thermostat arrangement for the mobile phase and the separation column in a liquid chromatograph comprises a heat exchanger through which the mobile phase passes. The heat exchanger has a heating and/or cooling element and is arranged between a sample in... | 09/20/1983 |
| 4372324 | Analog peak voltage detector in a defibrillator A circuit for detecting and holding the peak voltage of an analog signal is provided. A constant current source controlled by a digital voltage comparator charges a capacitor. The capacitor is charged to a voltage value equivalent to the peak voltage of t... | 02/08/1983 |
| 4367415 | Pulse generator circuit A pulse generator circuit comprises a pulse source and an output line having a specific characteristic impedance and having an input and an output end, the output end being connectable to a high impedance external load and the input end being connectable ... | 01/04/1983 |
| 4335350 | Apparatus for probing semiconductor wafers A two-head probe apparatus measures sheet resistivities of the thin layer on a semiconductor wafer. On one side of the wafer, a first probe head makes contact for injecting current into the wafer and measuring the voltage difference between two surface po... | 06/15/1982 |
| 4328808 | Defibrillator with means for determining patient impedance and delivered energy A defibrillator apparatus applies defibrillation a shock pulse to a patient at a selected energy level. The peak current magnitude of the pulse is sensed and processed to produce an indication of the value of transthoracic load resistance presented by the... | 05/11/1982 |
| 4283945 | Volume measuring apparatus A volumeter, in particular for use in liquid chromatography comprises a metering chamber for the volume to be measured. Another chamber is separated from the metering chamber by a resilient diaphragm and forms an electric capacitor. The capacitance of thi... | 08/18/1981 |
| 4279511 | Photometric absorption detector A photometric absorption detector, in particular for the use in liquid chromatography is provided, in which a test cell is penetrated by the rays emitted by a light source and in which the absorption of certain wave length ranges of the light by the sampl... | 07/21/1981 |
| 4249654 | Hydrogen storage apparatus A hydrogen storage container having at least one valved port is filled to about 75% of capacity with particles of low density material having a hydride forming metal coated on the surface of the particles by vapor or vacuum deposition. The density of the ... | 02/10/1981 |
| 4239623 | Apparatus for producing gradient elution in a liquid chromatographic system An aparatus for producing gradient elution in a liquid chromatographic system is diclosed. The apparatus comprises variable dosing means for at least two different solvents said dosing means including variable flow resistances for said solvents. A mixing ... | 12/16/1980 |
| 4180080 | Electrode assembly for sensing heart activity An electrode assembly for sensing heart activity from body tissue includes a flexible guide tube, a spiral retaining coil disposed in one end of the guide tube, a handle disposed at the other end of the guide tube, and twisted wires inside the tube interc... | 12/25/1979 |
| 4149528 | Electrode assembly for sensing heart activity An electrode assembly for sensing heart activity from body tissue includes a flexible guide tube, a spiral retaining coil disposed in one end of the guide tube, a handle disposed at the other end of the guide tube, and twisted wires inside the tube interc... | 04/17/1979 |
| 4140074 | System for stabilizing a floating vessel A seagoing vessel is stabilized by a passive system including tanks symmetrically disposed on the vessel below the water line. The tanks are connected by a conduit and pressurized with air to a selected pressure level. During each oscillatory roll and/or ... | 02/20/1979 |
| 4133154 | System for supporting removable posts An elongated tapered enclosure tightly receives a collar attached to the bottom of a post. A plurality of adjustable wedges at the top of the enclosure engage the post and serve to plumb the post and firmly secure it in the enclosure. The enclosure is set... | 01/09/1979 |
| 4132116 | Method for linearizing the characteristic curve of an electronic component and an apparatus for implementing the same A method for linearizing the exponential characteristic curve of an electronic component, in particular the temperature/resistance characteristic of a thermistor is provided. The output value of the component is compared with the output value of a referen... | 01/02/1979 |
| 4090500 | Cooking apparatus A cooking apparatus includes a vessel having a flue extending vertically therethrough. A gas heater is disposed beneath the flue. Food is boiled in water contained in the vessel. The bottom of the vessel is curved, and the flue is configured with a restri... | 05/23/1978 |
| 4070579 | X-ray tube transformer A compact impedance transformer increases the magnitude of a voltage pulse applied to an X-ray generator. A transmission line transformer is implemented using a variable impedance spiral delay line to achieve voltage doubling.... | 01/24/1978 |
| 4062240 | Dosing device for a liquid chromatograph A dosing device for a liquid chromatograph includes an axially movable shank. The shank is guided in packing sleeves and has a notch or cavity for receiving a sample and transferring it between a sample chamber and a high pressure chamber by axially movin... | 12/13/1977 |
| 4055791 | Self commutated SCR power supply A switching type power supply is provided which includes a first and a second SCR with a diode connected in reverse across each of them. The first SCR-diode pair in response to a clock pulse charges a capacitor which when fully charged causes the first SC... | 10/25/1977 |
| 4050911 | Gas chromatograph oven A method for cooling gas chromatograph ovens with ambient room temperature air utilizing two separate air passages through an oven door. The door remains closed during the heating and cooling cycles which take place inside the oven housing. A rotating sti... | 09/27/1977 |
| 4014354 | Dental flossing tool Dental floss is tensioned between a pair of spaced-apart, L-shaped arms attached to a handle. The configuration of the arms permits effective flossing of target areas within the mouth with minimal visual obstruction and facial distortion. The handle may b... | 03/29/1977 |
| 3992632 | Multiconfiguration ionization source This is an ion-producing source having a distinct chemical ionization configuration and a distinct electron impact configuration. In this source, a hollow chamber including an ion source and a source of sample molecules receives a hollow, slidable cylindr... | 11/16/1976 |
| 3976052 | Respiration monitor A respiration monitor for measuring the variations of the thorax impedance of a patient due to respiration activity includes circuitry for suppressing the indication of unwanted signals caused by the activity of the heart. This circuitry is connected to r... | 08/24/1976 |
| 3974493 | Cursor find system for the display of a word processing system In a keyboard entry word processing system, text is stored in a recirculating refresh memory along with a carriage return code at the end of each line. The text is displayed on a CRT screen. A cursor symbol, also displayed on the screen, may be moved by k... | 08/10/1976 |
| 3934347 | Dental prosthetic structure and method A dental implant includes a porous ceramic cup or ring filled with silicone rubber which supports an artificial tooth or other prosthetic device such as a denture. The jawbone grows into the porous ceramic to hold the implant firmly in place. The silicone... | 01/27/1976 |
