PHASE METRICS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 18120
 
 
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS1584
 
 
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 7199
 
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 4155
 
 
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 375
 
 
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 268
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
 
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 155
 
 
 
B25J MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES 157
 
 
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6184992 Apparatus and method for measuring flying height and a real index of refractionFeb 09, 99Feb 06, 01[G01N, G01B]
6184993 Apparatus for measuring a small gap using a Savart plateFeb 09, 99Feb 06, 01[G01B]
6140661 Loader with a matching finger that loads a head gimbal assembly onto a diskSep 08, 98Oct 31, 00[G11B, G01V]
6088092 Glass substrate inspection apparatusJun 21, 99Jul 11, 00[G01N]
5986451 Low z-height loader for a head gimbal assemblyOct 30, 96Nov 16, 99[G11B, G01R]
5957588 Air bearing for a spindleDec 29, 97Sep 28, 99[F16C]
5927934 End effector for a robotic arm of a disk certifierNov 11, 98Jul 27, 99[B66C]
5903085 Piezoelectric nanopositionerJun 18, 97May 11, 99[H01L]
5893699 End effector for a robotic arm of a disk certifierOct 31, 96Apr 13, 99[B25J]
5894374 Method and apparatus for providing a clock assemblyDec 17, 96Apr 13, 99[G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5696653 Tooling for holding a head gimbal assemblyExpiredDec 13, 96Dec 09, 97[G01J, G11B]
5689329 Flying height altitude simulatorExpiredAug 16, 96Nov 18, 97[G01B]
5668470 Automatic testing system for magnetoresistive headsExpiredMar 01, 96Sep 16, 97[G01R]
5661559 Optical surface detection for magnetic disksExpiredMar 14, 96Aug 26, 97[G01B]
5658191 Burnish head for magnetic mediaExpiredDec 19, 95Aug 19, 97[B24B]
5644564 Vacuum chuck for rotating data discsExpiredMar 17, 95Jul 01, 97[G11B]
5118204 Linear slide and method of manufacture thereofExpiredDec 14, 90Jun 02, 92[F16C]
5025340 Rotary chuck for centering and retaining data discsExpiredOct 16, 89Jun 18, 91[G11B]
4881745 Mechanical plate clampExpiredApr 25, 88Nov 21, 89[B23Q]
4702101 Apparatus and method for testing the calibration of a hard disk substrate testerExpiredAug 12, 85Oct 27, 87[G01C]

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