HP HOLDINGS THREE, INC.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 7152
 
  
 
H04B TRANSMISSION 2208

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5995914 Method and apparatus for asynchronously measuring frequency shifted signalsJan 19, 96Nov 30, 99[G01R]
5818240 Method and system for measuring signal transfer characteristics in the presence of WOW, flutter and intermodulation distortionDec 12, 96Oct 06, 98[G01R]
5748001 Method and apparatus for fast response and distortion measurementDec 12, 96May 05, 98[G01R]
5749047 Method and apparatus for recognizing a test signal and determining signal transfer characteristics therefromApr 05, 95May 05, 98[G01R]
5649304 Method and apparatus for communicating auxiliary information in a measurement signalApr 07, 95Jul 15, 97[H04B]
5475315 Method and apparatus for fast response and distortion measurementJul 23, 93Dec 12, 95[H04B, G01R]
5420516 Method and apparatus for fast response and distortion measurementJul 23, 93May 30, 95[G01R]
5336989 AC mains test apparatus and methodSep 19, 91Aug 09, 94[G01R]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5265201 Master-slave processor human interface systemExpiredAug 24, 92Nov 23, 93[G06F]
5247458 Method and apparatus for testing a digital system for the occurrence of errorsExpiredSep 11, 90Sep 21, 93[G06F]
5136267 Tunable bandpass filter system and filtering methodExpiredDec 26, 90Aug 04, 92[H03H]
5089981 Hybrid form digital filterExpiredApr 24, 89Feb 18, 92[G06F]
4631522 Method and circuit for compensation of a multiplying digital-to-analog converterExpiredApr 12, 85Dec 23, 86[H03K]
4614914 Low-distortion transformer-coupled circuitExpiredApr 12, 85Sep 30, 86[H03F]
4563652 Dual-stage filter with feedbackExpiredApr 12, 85Jan 07, 86[H03F]

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.