| 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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| 06/27/1989 | US4841775 Vibratory transducer |
| 06/13/1989 | US4838084 Density measuring instrument |
| 06/13/1989 | CA1255798A1 Method and apparatus for testing the outflow from hydrocarbon wells on site |
| 05/30/1989 | US4835390 Apparatus and method for measuring bulk density using positron scattering and annihilation |
| 05/24/1989 | EP0317340A2 Improvements in single vibrating tube transducers |
| 05/16/1989 | US4830126 Apparatus for the automatic measurement of the apparent weight of a sludge contained in a liquid and system for automatically measuring the PONSAR index of such a sludge, using the apparatus |
| 05/10/1989 | EP0315201A2 Method and apparatus for carrying out measurements in a foaming liquid |
| 05/09/1989 | US4827746 Sampling method for oscillatory densimeter |
| 04/27/1989 | DE3734192A1 Verfahren zum automatischen messen der fadendichte pro laengeneinheit, zb cm, von bewegten warenbahnen A method for automatically measuring the thread density per laengeneinheit, eg cm, were moving tracks |
| 04/26/1989 | CN2036667U Floating air-blown type differential densimeter |
| 04/25/1989 | CA1253011A1 Apparatus for determining the volume of colostrum to be fed to a calf |
| 04/12/1989 | EP0311238A1 Gas flow correction sensor |
| 04/11/1989 | US4820919 Method of determining the density of substrata |
| 04/05/1989 | CN2035476U Continuous detecting device for pulp specific gravity |
| 03/29/1989 | EP0308493A1 Thickness/density measuring apparatus. |
| 03/28/1989 | US4817122 Apparatus for radiation analysis |
| 03/28/1989 | US4815536 Analysis of multi-phase mixtures |
| 03/28/1989 | US4815323 Ultrasonic fuel quantity gauging system |
| 03/21/1989 | US4813283 Density measuring apparatus |
| 03/14/1989 | US4811592 Of a liquid |
| 03/14/1989 | CA1251278A1 Device for rapid determination of the humidity rate of a material |
| 03/07/1989 | US4809499 Densimeter |
| 03/01/1989 | EP0305133A2 Improvements in or relating to devices for measuring fluid density |
| 02/23/1989 | WO1989001618A1 Method and apparatus for monitoring the specific gravity of a liquid |
| 02/22/1989 | CN2033120U Liquid araeometer |
| 02/14/1989 | US4803867 Fluid measurement apparatus providing flow tube strain relief |
| 02/08/1989 | CN2032321U Fluid density sensor |
| 02/07/1989 | US4802360 Vibrating spool densitometer immune to cabling effects |
| 01/24/1989 | CA1249363A1 Biological fluid specific gravity monitor with ultrasonic sensor circuit |
| 01/11/1989 | CN2030720U 数字式液体比重计 Digital hydrometer |
| 01/10/1989 | US4796468 Apparatus for measuring fluid density |
| 01/04/1989 | EP0297237A2 Material layer volume determination with correction band |
| 01/04/1989 | CN2030321U Coal density determining apparatus |
| 01/03/1989 | US4795903 Analysis of fluids |
| 12/21/1988 | EP0296029A1 Apparatus for automatic measurement of the apparent weight of a mud suspended in a liquid and system for automatic measurement of the ponsar's index of such a mud, using the apparatus |
| 12/21/1988 | EP0295771A2 Apparatus and method for obtaining a rapid hematocrit |
| 11/30/1988 | CN88212839U Densimeter for edible plant oil |
| 11/15/1988 | US4783987 System for sustaining and monitoring the oscillation of piezoelectric elements exposed to energy-absorptive media |
| 11/08/1988 | CA1244549A1 Pipeline inspection |
| 11/03/1988 | WO1988008517A1 Fluid measurement apparatus providing flow tube strain relief |
| 10/25/1988 | US4779462 Apparatus for the automatic measurement of the apparent density of the mud in a liquid, system for the automatic measurement of the ponsar index of such a mud using the apparatus and process for measuring said index |
| 10/19/1988 | CN88211396U Multifunctional floating meter |
| 10/18/1988 | CA1243429A1 Analysis of fluids |
| 10/12/1988 | EP0286419A2 Method and apparatus for analysing liquid properties |
| 10/12/1988 | CN87216778U Flux dosing controller |
| 10/06/1988 | WO1988007671A1 Thickness/density measuring apparatus |
| 10/05/1988 | CN87212618U Temp. compensation densimeter |
| 10/04/1988 | US4775943 Method and apparatus for determining polymer molecular weight distribution parameters |
| 10/04/1988 | US4774965 Material layer volume determination with correction band |
| 09/28/1988 | EP0284250A2 Apparatus for use with a densitometer |
| 09/28/1988 | CN87216736U Pressure sampling device of differential pressure transmitter |
| 09/28/1988 | CN87214404U Test unit of electro-liquid specific gravity of accumulator |
| 09/27/1988 | US4773257 Method and apparatus for testing the outflow from hydrocarbon wells on site |
| 09/27/1988 | US4773253 Method and apparatus for measuring fluid density |
| 09/22/1988 | WO1988007188A1 Liquid/gas ratio control in pipes |
| 09/21/1988 | EP0283047A2 Method and device for contactless aquisition of data for the spatial resolution of density and temperature in a volume sample |
| 09/14/1988 | EP0282251A2 Fluid transducer |
| 09/13/1988 | US4770041 Apparatus for determining specific gravity and density |
| 09/06/1988 | US4769830 Apparatus and method for measuring bulk density of solid particles |
| 08/30/1988 | US4766964 Apparent density measuring device |
| 08/25/1988 | DE3715495A1 Apparatus for determining the density, in particular for the determination of the antifreeze content, of aqueous solutions |
| 08/11/1988 | DE3801115A1 Method and apparatus for determining the density of a fibre strand in the tobacco processing industry |
| 08/09/1988 | US4762422 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 |
| 07/27/1988 | CN87216841U Automatic surveying system for density of human body |
| 07/27/1988 | CN87215185U Buoyancy densimeter |
| 07/20/1988 | EP0274522A1 Bone densitometer |
| 07/19/1988 | US4757709 Flowmeter for use in a hydrocarbon well |
| 07/13/1988 | EP0273957A1 Process and device for measuring gas properties. |
| 07/07/1988 | DE3744325A1 Method for pre-estimating the final oscillation period of oscillating araeometers (hydrometers) |
| 07/06/1988 | EP0273074A1 Coolant line hydrometer |
| 07/05/1988 | USH490 Determination of the density of a hydrocarbon liquid at elevated pressure |
| 07/05/1988 | US4754639 Device for testing suspensions |
| 06/22/1988 | CN86108558A Quick solid density (specific gravity) measurer |
| 06/09/1988 | DE3723437A1 Flow channel with radiometric density measurement for flowable media |
| 06/08/1988 | CN87210110U Jar (or case) type vaccum device for measuring real density of powder substance |
| 06/07/1988 | US4750143 Apparatus for the rapid determination of the moisture content of a material |
| 05/31/1988 | US4747308 Method and apparatus for nondestructively determining the density of a plurality of contiguous segments of a nonhomogeneous specimen |
| 05/24/1988 | US4745807 Density meter for continuous fluid flow |
| 05/11/1988 | EP0266810A2 System for the assembly of a metal joining-piece and a high-pressure composite material tube - notably applications for equipment used in the oil industry |
| 05/05/1988 | DE3723523A1 Method and device for measuring the density profile of flowable flowing media |
| 04/27/1988 | CN87207832U Density measuring device for electrolyte of marine storage battery |
| 04/21/1988 | WO1988002853A1 Apparatus and methods for measuring the density of an unknown fluid using a coriolis meter |
| 04/20/1988 | CN87214002U Fluid density interface monitor |
| 04/19/1988 | US4738655 Apparatus and method for obtaining a rapid hematocrit |
| 04/12/1988 | US4736628 Testing device for car battery and radiator |
| 04/12/1988 | US4736627 Steam profile liquid/vapor separator |
| 04/07/1988 | DE3733200A1 Method for the rapid determination of ternary solution compositions |
| 04/06/1988 | CN87214417U Density type liquid concentration gauge |
| 03/31/1988 | DE3632019A1 Device for monitoring and/or measuring the density of a liquid |
| 03/31/1988 | DE3631884A1 Device for monitoring the density of a liquid |
| 03/30/1988 | CN87212066U High-speed liquid density meter |
| 03/29/1988 | US4734609 Gas density transducer |
| 03/22/1988 | US4733080 Textile structure measurment |
| 03/17/1988 | DE3630078A1 Appliance for the conversion of gas quantities |
| 03/16/1988 | CN87203739U New type electrolytic gravimeter |
| 03/16/1988 | CN87106743A Industry fuel densitometer by optical fiber technique |
| 03/09/1988 | CN87207108U Standard floating ball for determing density |
| 02/24/1988 | CN87206775U Double sheath connection hydrometer device |
| 02/16/1988 | CA1232775A1 Fluid density measurement apparatus and method |
| 02/02/1988 | CA1232153A1 Centrifugometric mass analysis/thermocentrifugometric analysis |