| Patents for G01N 9 - Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity (6,694) |
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| 08/21/1990 | CA1273082A1 Device for automatically controlling the density and viscosity of the abrasive mixture and the quantity of metallic middlings used in the sawing of granite or hard stone |
| 08/14/1990 | US4949365 Apparatus for measuring density or the like of an object having a small transmission factor |
| 08/09/1990 | DE3907617C1 Method for determining the density of laminar wooden materials |
| 08/08/1990 | EP0380759A2 Method and apparatus for measuring entrained gas bubble content of flowing fluid |
| 08/07/1990 | US4947414 Bone densitometer |
| 07/25/1990 | EP0378547A1 Method and apparatus for monitoring the specific gravity of a liquid |
| 07/24/1990 | US4943721 Method of obtaining accurate compositional information of multi-layer compositions |
| 07/17/1990 | US4941868 Optimum centrifugal separation of particles by transient analysis and feedback |
| 07/17/1990 | US4941361 Three-in-one flowmeter |
| 07/17/1990 | US4941357 Method for estimating the strength of wood |
| 07/17/1990 | US4941345 Method and apparatus for the measurement of gas properties |
| 07/04/1990 | CN2058989U Liquid specific gravity and level ineasuring device |
| 07/04/1990 | CN2058988U Small diameter floating type densimeter |
| 07/03/1990 | US4939362 Borehole fluid density well logging means and method |
| 06/20/1990 | CN2058487U Statics density detecting device |
| 06/19/1990 | US4934178 Method and apparatus for determining the density of a gas |
| 06/14/1990 | WO1990006500A1 A method and device for measuring the viscosity and/or the density of a flowing fluid |
| 06/13/1990 | EP0372631A2 A method and system for measuring a vertical density profile of a fluid |
| 05/30/1990 | EP0370245A2 Alcohol concentration sensor |
| 05/22/1990 | US4926675 Air detector for liquid-filled sensing lines |
| 05/08/1990 | US4922745 Fluid transducer |
| 04/18/1990 | EP0364217A2 Improved torsional wave fluid sensor and system |
| 04/18/1990 | EP0364168A2 System and method for ultrasonic determination of density |
| 04/18/1990 | EP0363854A2 Culture fluid concentrator |
| 04/18/1990 | CN2056249U Vibration diaphragm density sensor |
| 04/18/1990 | CN2056248U Suspended liquid specific buoyancy meter |
| 04/17/1990 | US4918712 Device for determining the mass per unit volume of an elementary volume of material |
| 04/17/1990 | CA2000733A1 Culture fluid concentrator |
| 04/10/1990 | US4914962 Vibrating strip transducer |
| 04/05/1990 | WO1990003557A1 Vibrating strip transducer |
| 04/03/1990 | US4912962 Method of detection of oscillation period for oscillatory densimeter |
| 03/28/1990 | EP0360693A1 Device for measuring the firmness of a deformable object |
| 03/22/1990 | WO1990002933A1 An improved device for determining the density of liquids and gases |
| 03/21/1990 | CN2054904U Differential pressure densimeter |
| 03/20/1990 | US4910402 Apparatus and method for measuring a property of a liquid |
| 03/20/1990 | US4909068 Device for detecting viscosity or specific gravity of liquid |
| 03/14/1990 | EP0358575A2 On-line paper sheet formation characterizing method and device |
| 03/14/1990 | EP0190067B1 Method of quantitative tomodensitometry |
| 03/06/1990 | USRE33176 Method for measuring density of a bulk material in a stockpile |
| 03/06/1990 | US4905508 In combination with a liquid cooled engine |
| 03/06/1990 | US4905499 Device for detecting viscosity or specific gravity of liquid |
| 02/28/1990 | EP0176543B1 Method, apparatus and probe for determining amount of biological material |
| 02/22/1990 | DE3827774A1 Method and device for the determination of the compactness of cohesive or non-cohesive soils |
| 02/15/1990 | DE3827293A1 Device for handling analytical samples in the mu g and mg range |
| 02/14/1990 | CN2052894U Static hydraulics balance |
| 02/14/1990 | CN1039656A Process and reagent for determination of ionic strength or specific weight of aqueous liquids |
| 02/06/1990 | US4899298 High resolution measurement of moving materials using a scintillation detector |
| 02/05/1990 | EP0274522A4 Bone densitometer. |
| 01/24/1990 | EP0352203A2 Method and apparatus for simultaneously measuring in a pipe the density, the concentration, the flowing rate, the delivery and the temperature of a liquid or a pasty fluid by ultrasonic transmission |
| 01/24/1990 | CN2051738U Rock (ore) density measuring instrument |
| 01/18/1990 | DE3908439A1 Device for determining density |
| 01/16/1990 | US4893496 Torsional wave fluid sensor and system |
| 01/11/1990 | WO1990000032A1 Apparatus and method of determining a person's body density or fat level |
| 01/10/1990 | EP0349934A2 Process for the determination of the ionic strength or the specific gravity of queous fluids |
| 01/10/1990 | EP0349843A2 Composition and method of assaying aqueous liquids for specific gravity |
| 01/03/1990 | EP0349437A1 Apparatus for the automatic measurement of the apparent weight of a mud suspended in a liquid, system for the automatic measurement of the Ponsar's index of such a mud, using the apparatus, and its use in the conduit in a plant for purifying waste water |
| 01/03/1990 | EP0348574A2 Method of simultaneously measuring thickness and composition of film and apparatus therefor |
| 01/02/1990 | US4890480 Relating to devices for measuring fluid density |
| 01/02/1990 | CA1264195A1 Ultrasonic density measurement |
| 12/28/1989 | WO1989012802A1 Mass-volume flowmeter |
| 12/27/1989 | EP0348244A2 Measurement of fluid density |
| 12/19/1989 | US4887903 Apparatus for reading height of measurement column |
| 12/14/1989 | DE3917606A1 Process and apparatus for the production of cigarettes |
| 12/06/1989 | CN2048972U Mud density measurer at site |
| 11/23/1989 | DE3815800A1 Arrangement for measuring a gas density |
| 11/16/1989 | WO1989011095A1 Method and apparatus for measuring the thickness of a coating on a substrate |
| 11/02/1989 | WO1989010062A1 A method and apparatus for ascertaining the net weight of a frozen, ice-coated product |
| 10/31/1989 | US4876880 Densimeter |
| 10/31/1989 | US4876879 Apparatus and methods for measuring the density of an unknown fluid using a Coriolis meter |
| 10/24/1989 | US4875364 Method for measuring hemoglobin |
| 10/18/1989 | EP0337831A1 Method and device for determining the density of an elementary volume of matter |
| 10/17/1989 | US4873866 Method of hydrostatic weighing and kit |
| 10/10/1989 | US4872351 Net oil computer |
| 10/10/1989 | US4872335 Vibrating type transducer |
| 10/04/1989 | CN1036079A Method for measuring hemoglobin |
| 10/04/1989 | CN1036077A Apparatus for measuring density of finely divided solid carbon-contg. fuel flow |
| 09/27/1989 | EP0333913A1 Method for measuring hemoglobin content |
| 09/27/1989 | EP0333713A1 Apparatus and methods for measuring the density of an unknown fluid using a coriolis meter. |
| 09/26/1989 | CA1261163A1 Determining amount of biological material |
| 09/21/1989 | DE3807375A1 Device to measure the density of fluids by means of vibration systems |
| 09/20/1989 | EP0333437A2 Method for measuring density of newtonian and non-newtonian fluids |
| 09/20/1989 | CN2044733U Dual-column gradiomanometer |
| 09/12/1989 | US4866428 Remote battery cell specific gravity and electrolytic level monitor using floats and optical couplers |
| 09/12/1989 | US4865054 Method of and apparatus for making and processing streams of fibrous material of the tobacco processing industry |
| 09/12/1989 | US4865052 Method of and apparatus for making a stream from particles of the tobacco processing industry |
| 09/06/1989 | EP0331538A2 Viscosity and density measuring apparatus with vibrating elements for liquids |
| 08/30/1989 | EP0330262A2 Apparatus for measuring density of a finely divided solid carbon-containing fuel flow |
| 08/29/1989 | US4861477 Tubular container for centrifugal separation |
| 08/22/1989 | US4858460 Air detector for liquid-filled sensing lines |
| 08/15/1989 | US4857792 Circular direction vibrator |
| 08/15/1989 | US4856344 Measuring flow in a pipe |
| 08/15/1989 | US4856320 Method and apparatus for measuring physical adsorption of gases based on dielectric measurements |
| 08/01/1989 | US4852388 Method for measuring density of Newtonian and non-Newtonian fluids |
| 07/19/1989 | CN1034062A Control and measuring instrument for welding flux |
| 07/18/1989 | US4849988 Apparatus and method for measuring the quality of steam |
| 07/18/1989 | US4848139 Determining amount of biological material |
| 07/05/1989 | CN1033695A Material layer volume determination with correction band |
| 07/04/1989 | US4845747 Apparatus for measuring density of vertebrae or the like |
| 07/04/1989 | US4843869 Method for measuring hemoglobin |
| 07/04/1989 | CA1257014A1 Process and apparatus for quantitative scanning |