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Class Information
Number: 434/283
Name: Education and demonstration > Science > Means demonstrating physical property (e.g., osmotic pressure, solubility, etc.) of substance
Description: Subject matter illustrating a physical characteristic of a material, e.g., the tendency of a substance to diffuse through a semipermeable membrane or the amount of a substance that will dissolve in a given amount of another substance.

Patents under this class:

Patent Number Title Of Patent Date Issued
8118635 Enclosed vapor pressure oscillation device Feb. 21, 2012
7905728 Device and method for generating vortex Mar. 15, 2011
7686667 Internal displacement vapor pressure rotation device Mar. 30, 2010
7344378 Scientific phenomena evaluation device, educational tool for scientific experiments and manufacturing method of the device and tool Mar. 18, 2008
7316569 Evaluation apparatus of scientific phenomena, educational tool for scientific experiments and method of manufacturing the same Jan. 8, 2008
7210937 Method and apparatus for microfluidics education May. 1, 2007
7150670 Enclosed vapor pressure rotation device Dec. 19, 2006
6769916 Methods and apparatus for demonstrating laws of physical chemistry Aug. 3, 2004
6737274 Comparator for time-temperature indicator May. 18, 2004
6027344 Simulant training kit for recognizing hazardous materials Feb. 22, 2000
5876212 Apparatuses and kits for teaching mathematics Mar. 2, 1999
5742290 Molecular orbital modeling system with an improved function processor Apr. 21, 1998
5720618 Vacuum teaching device Feb. 24, 1998
5299938 Display apparatus Apr. 5, 1994
5090643 Force generating system Feb. 25, 1992
5055259 Bloodless blood typing training kit Oct. 8, 1991
4133124 Display device Jan. 9, 1979

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