Guzik Technical Enterprises

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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
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 14145
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 1299
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 456
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 4202
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 4281
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 2360
 
  
 
H03F AMPLIFIERS 281
 
  
 
F16F SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION158
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES1108

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9842981 Hermetically sealed piezoelectric actuator assemblyNov 28, 16Dec 12, 17[H01L]
9773515 HGA loader with optical alignment for automated magnetic head testingMar 25, 16Sep 26, 17[G10H, G11B, G01R]
9748967 Periodic signal averaging with a time interleaving analog to digital converterMar 02, 17Aug 29, 17[H03M, G06F, H03H]
9641191 Digital down converter with equalizationAug 05, 16May 02, 17[H03M]
9634679 Digital down converter with equalizationAug 19, 16Apr 25, 17[H03M]
9627602 Driving circuit for a piezoelectric actuatorJun 21, 16Apr 18, 17[H01L, H02N, G11B]
9506951 Method and apparatus for data acquisition with waveform triggerJan 11, 16Nov 29, 16[G01R]
9450598 Two-stage digital down-conversion of RF pulsesJan 11, 16Sep 20, 16[H03M, H04B, G01S]
9443542 Head gimbal assembly (HGA) mounting apparatus for a magnetic head and disk testerMar 25, 16Sep 13, 16[G11B]
9344301 Acquisition device with multistage digital equalizationMay 29, 15May 17, 16[H04L, H04B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7151393 High-speed write driverExpiredNov 05, 04Dec 19, 06[H03K]
6661607 Method and apparatus for electromagnetic interference reduction in magnetic recording devicesExpiredJan 07, 02Dec 09, 03[G11B]
2002/0168,067 Copy protection method and system for a field-programmable gate arrayAbandonedMay 08, 01Nov 14, 02[H04L]
6242910 Magnetic head and disk tester with yaw correctionExpiredFeb 01, 99Jun 05, 01[G11B, G01R]
6229303 Spinstand for testing magnetic heads and disksExpiredMar 19, 98May 08, 01[G01R]
6229304 Apparatus for air flow stabilization in spinstands with a shroud assembly and a shell assemblyExpiredAug 06, 99May 08, 01[G01R]
6219194 MR head read amplifier with improved write to read recovery timeExpiredApr 09, 99Apr 17, 01[G11B]
6219683 Radially distributed transverse filterExpiredJul 29, 98Apr 17, 01[G06F]
6064261 Write amplifier with improved switching performance, output common-mode voltage, and head current controlExpiredApr 23, 99May 16, 00[H03F]
5872451 System for locating and fixing a headstack assembly on headstack testerExpiredMay 09, 97Feb 16, 99[G11B, G01R]
5825180 Magnetic disk test apparatus having heads moveable along substantially parallel axesExpiredDec 11, 96Oct 20, 98[B24B, G01R]
5796541 Servo track writing measurement of gapped initial clock track to write full clock trackExpiredNov 21, 95Aug 18, 98[G11B]
5760982 Method and apparatus for testing magnetic heads and disksExpiredFeb 02, 96Jun 02, 98[G11B, G01R]
5491413 Positioning device for magnetic head and disk tester with rotating tool supportExpiredSep 27, 93Feb 13, 96[G11B, G01R]
5355261 Method and apparatus for measuring error rate of magnetic recording devices having a partial response maximum likelihood data detection channelExpiredDec 20, 93Oct 11, 94[G11B]
5257093 Apparatus for measuring nanometric distances employing frustrated total internal reflectionExpiredNov 12, 91Oct 26, 93[G01B]
5254946 Magnetic head and disk tester with head centrally mounted on radially-moving, rotatable platform that surrounds diskExpiredFeb 25, 92Oct 19, 93[G01R]
5220408 Method and apparatus for calibration of optical flying-height testersExpiredDec 10, 91Jun 15, 93[G01J, G01B]
4958839 Disc clamp employing resilient cone for spreading ballsExpiredJul 12, 88Sep 25, 90[B23B, G11B]
4902971 Magnetic head and disc tester employing pivot arm on linearly movable slideExpiredSep 14, 88Feb 20, 90[G11B, G01R]

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