Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 4571292 | Apparatus for electrochemical measurements A sensor for an electrochemically active species, such as oxygen, uses more than two electrodes, namely, at least a working electrode, counter electrode and reference electrode. The sensor preferably is substantially planar, is made using thick film or th... | 02/18/1986 |
| 4534825 | Method of making an electrochemical sensing cell An in vivo electrochemical monitoring device is formed by a catheter-like member which terminates in a closed end having a wall with a fixed opening to admit fluid to be tested, such as blood in an artery. An electrochemical sensor, such as an ISFET devic... | 08/13/1985 |
| 4492622 | Clark cell with hydrophylic polymer layer An electro-chemical cell for determining a particular property or component of a fluid includes a cathode electrode, an anode electrode spaced from the cathode, an electrolyte filling a space containing the cathode and anode electrodes, a selectively perm... | 01/08/1985 |
| 4467811 | Method of polarographic analysis of lactic acid and lactate A method of measuring lactic acid or lactate and derivatives thereof in liquids which is extremely versatile and is suitable for use in a number of areas such as the rapid measurement of lactic acid in whole blood, the ratio of lactic acid to pyruvic acid... | 08/28/1984 |
| 4432366 | Reference electrode catheter A reference electrode catheter for use for in vivo measurement of body fluids. The catheter includes a small diameter cylindrical tube having a reference electrode assembly disposed on the distal end thereof. The reference electrode assembly includes a ho... | 02/21/1984 |
| 4400258 | Measuring device for facilitating the electrical measurement of a substance A measuring device for facilitating the electro-chemical measurement of a substance such as a gas comprises a holder ring which has an opening therethrough with an inwardly extending annular resilient sealing lip extending into the opening and an end face... | 08/23/1983 |
| 4321113 | Electronic calibration of electrochemical sensors An arrangement and method is provided for electronically calibrating electrochemical sensors for determining partial pressures in physiological media. In an electrochemical sensor arrangement for sensing such partial pressures, a working electrode with an... | 03/23/1982 |
| 4269684 | Apparatus for oxygen partial pressure measurement Disclosed is apparatus and method for continuously compensating for electrode drift during the measurement of the partial pressure of oxygen by the net charge transport technique. The apparatus derives a correction factor from variations in waveforms repr... | 05/26/1981 |
| 4250738 | Method and apparatus for measuring characteristics of small quantities of liquid dropped onto a thermostatically heated transducer, utilizing a warm-up and measurement program A dish transducer unit comprising a dish-defining structure into which a drop of sample fluid is dropped for contact with the electrical or electrochemical transducer of the transducer, both the dish-defining structure and the transducer unit being thermo... | 02/17/1981 |
| 4248712 | Electrode device An electrode device having an electrolyte container separated from the test medium by a membrane member, a cathode within the electrolyte container having the shape of the end section of a precious metal conductor protruding from an insulating body and a ... | 02/03/1981 |
| 4207146 | Process for testing gases in body fluids for partial pressure and to a testing device therefor A testing device for the partial pressure testing of gases in body fluids comprises a test electrode having a platinum wire extending through a glass tubule arranged in a synthetic tube having a tip with a cellophane layer thereon. The electrode and a cou... | 06/10/1980 |
| 4180771 | Chemical-sensitive field-effect transistor The invention relates to an insulated-gate field effect transistor which is adapted for detecting and measuring various chemical properties such as ion activity in a solution. The device has a chemically sensitive layer which overlies a portion of a subst... | 12/25/1979 |
| 4012308 | Ion sensitive combination electrode An electrochemical combination electrode assembly particularly adapted for measuring the pH of body portions of a living subject, such as skin, hair, and the like, and which can be operated in any vertical, inclined or horizontal orientation. The assembly... | 03/15/1977 |
| 3985633 | Device for the polarographic measurement of oxygen pressure A platinum oxygen-pressure measuring electrode is connected with a reference electrode. An indicating device for indicating the oxygen pressure is connected with both of the electrodes, and an arrangement is interposed between the electrodes and an object... | 10/12/1976 |
