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Class Information
Number: 73/78
Name: Measuring and testing > Hardness
Description: Subject matter for direct measurement of the hardness of materials.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7428455 |
Compaction indication by effective rolling radius |
Sep. 23, 2008 |
| 7373802 |
Testing fixture and method for determining toughness of molded plastic components |
May. 20, 2008 |
| 7354617 |
Fixing belt and method for evaluating it |
Apr. 8, 2008 |
| 7239150 |
Pavement material microwave density measurement methods and apparatuses |
Jul. 3, 2007 |
| 7162919 |
Blast pressure gauge |
Jan. 16, 2007 |
| 7137285 |
Method and instrument for characterizing treading surfaces, for instance for realizing synthetic turf surfaces |
Nov. 21, 2006 |
| 7121136 |
Hardness testing apparatus |
Oct. 17, 2006 |
| 7096720 |
Hardness tester |
Aug. 29, 2006 |
| 7073374 |
Soil compaction measurement on moving platform |
Jul. 11, 2006 |
| 7024942 |
Method and apparatus for non-destructive detection of pits and seed fragments in fruit |
Apr. 11, 2006 |
| 6973821 |
Compaction quality assurance based upon quantifying compactor interaction with base material |
Dec. 13, 2005 |
| 6929716 |
Method for the manufacture or treatment of a material web |
Aug. 16, 2005 |
| 6883367 |
Method for measuring elastic properties |
Apr. 26, 2005 |
| 6868718 |
Wireless tire pressure alarming system as directly powered from car cigarette-lighter receptacle |
Mar. 22, 2005 |
| 6786083 |
Apparatus and method for assessment of mattresses |
Sep. 7, 2004 |
| 6681622 |
Device for and method of determining cut resistance of a material |
Jan. 27, 2004 |
| 6668637 |
Tire air pressure estimating apparatus |
Dec. 30, 2003 |
| 6654685 |
Apparatus and method for navigation of an aircraft |
Nov. 25, 2003 |
| 6643599 |
Automated machine and method for fruit testing |
Nov. 4, 2003 |
| 6551019 |
Device for checking the compaction for vibration compaction devices |
Apr. 22, 2003 |
| 6536263 |
Gauges for testing sand in or for golf course sand bunkers |
Mar. 25, 2003 |
| 6513370 |
Wear indicator for sports balls |
Feb. 4, 2003 |
| 6457349 |
Method of testing hardness of micro region |
Oct. 1, 2002 |
| 6425686 |
Glass transition temperature measurement system |
Jul. 30, 2002 |
| 6314798 |
Cutting tool and wear resistant material |
Nov. 13, 2001 |
| 6301956 |
Hardness tester |
Oct. 16, 2001 |
| 6260419 |
Method and device for conducting a hardness test on test specimens, especially tablets or pills |
Jul. 17, 2001 |
| 6244102 |
Method and system for examination and optimal compaction of soil enbankments |
Jun. 12, 2001 |
| 6190611 |
Hardness indicator |
Feb. 20, 2001 |
| 6032517 |
Device and process for measuring the rigidity of flat mail |
Mar. 7, 2000 |
| 6026689 |
Log cutting optimization system |
Feb. 22, 2000 |
| 5971038 |
Process and device for checking the tablet parameters |
Oct. 26, 1999 |
| 5952561 |
Real time asphalt pavement quality sensor using a differential approach |
Sep. 14, 1999 |
| 5942679 |
Compaction index |
Aug. 24, 1999 |
| 5887638 |
Apparatus for measuring strength of a mold and for pressing marks on the mold |
Mar. 30, 1999 |
| 5804706 |
System and method for measuring the mar resistance of materials |
Sep. 8, 1998 |
| 5679902 |
Surface-micromachined symmetrical differential pressure sensor with electrodes patterned into multiple conducting areas |
Oct. 21, 1997 |
| 5679887 |
Method of estimating mechanical hardness of steel from its magnetic properties |
Oct. 21, 1997 |
| 5656939 |
Apparatus for measuring hardness of ultraviolet curing transformation agent comprising stain and method for the same |
Aug. 12, 1997 |
| 5563458 |
Apparatus and method for sensing surface flexure |
Oct. 8, 1996 |
| 5537862 |
Quantitative method for evaluation of the state of piano hammer felt tonal regulation |
Jul. 23, 1996 |
| 5535627 |
Roll structure acoustic gage and method |
Jul. 16, 1996 |
| 5490411 |
Testing device for surfaces subject to impact |
Feb. 13, 1996 |
| 5377697 |
Cigarette filter test apparatus and associated method for measuring filter hot collapse and tobacco consumption |
Jan. 3, 1995 |
| 5323648 |
Formation evaluation tool |
Jun. 28, 1994 |
| 5299450 |
Method for evaluating performance of aluminum alloy wiring film |
Apr. 5, 1994 |
| 5285681 |
On-line pellet durability tester |
Feb. 15, 1994 |
| 5255562 |
Measurement of interfacial strength of a composite material |
Oct. 26, 1993 |
| 5209124 |
Method and apparatus for determining the filling capacity of tobacco and the hardness of cigarettes |
May. 11, 1993 |
| 5170669 |
Hair nature measuring instrument |
Dec. 15, 1992 |
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