Pacific Bell

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 4443
 
  
 
H04M TELEPHONIC COMMUNICATION 2161
 
  
 
H04J MULTIPLEX COMMUNICATION 1124

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
5452206 Method for generating documentation for computer softwareSep 19, 91Sep 19, 95[G06F]
5386525 System for providing application programs with direct addressability into a shared dataspaceOct 29, 91Jan 31, 95[G06F]
5357556 System and method for telephone network testingAug 10, 92Oct 18, 94[H04M]
5327485 Telephone lottery play systemDec 01, 92Jul 05, 94[H04M, G06F]
5295261 Hybrid database structure linking navigational fields having a hierarchial database structure to informational fields having a relational database structureJul 27, 90Mar 15, 94[G06F]
5216668 Modulated nonblocking parallel banyan networkAug 19, 91Jun 01, 93[H04J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5848144 Switch cutover with paced transitionExpiredOct 03, 96Dec 08, 98[H04M]
5216853 Telephone enclosureExpiredJul 12, 90Jun 08, 93[E04H]
5132965 Nonblocking parallel Banyan networkExpiredMay 03, 90Jul 21, 92[H04J]
5124943 Digital network utilizing telephone linesExpiredAug 22, 88Jun 23, 92[G06F]
5093600 Piezo-electric relayExpiredSep 18, 87Mar 03, 92[H01L]
5065394 Packet routing switchExpiredAug 03, 89Nov 12, 91[H04Q]
5062104 Digital service unit for connecting data processing equipment to a telephone system based computer networkExpiredSep 26, 88Oct 29, 91[H04L, H04Q]
5058163 Interface unit for transferring digital data between time-domain multiplexed communication linksExpiredOct 12, 88Oct 15, 91[H04L, G06F, H04J]
5023612 Illegal sequence detection and protection circuitExpiredJul 13, 89Jun 11, 91[H03M]
RE33474 Optical fiber bandwidth limiting methodExpiredMar 20, 89Dec 04, 90[H04B]
4946244 Fiber optic distribution system and method of using sameExpiredMar 13, 89Aug 07, 90[H04B, G02B, G02F]
4924460 Office control unit apparatus for use in a digital networkExpiredOct 05, 88May 08, 90[H04J]
4916349 Latching piezoelectric relayExpiredMay 10, 88Apr 10, 90[H01L]
4909895 System and method for providing a conductive circuit pattern utilizing thermal oxidationExpiredApr 11, 89Mar 20, 90[C03C, C23F, B44C]
4907253 Cross-connected switch having means for removing switching modules without interrupting serviceExpiredSep 07, 88Mar 06, 90[H04M]
4898648 Method for providing a strengthened conductive circuit patternExpiredNov 15, 88Feb 06, 90[C25D, B05D]
4899340 Error correcting code and error correcting circuit using the sameExpiredJun 28, 88Feb 06, 90[G06F]
4893340 Multijunction unit apparatus for use in a digital networkExpiredOct 05, 88Jan 09, 90[H04L]
4890279 Multiplexer and computer network using the sameExpiredSep 26, 88Dec 26, 89[H04Q]
4871225 Fiber optic distribution networkExpiredApr 02, 87Oct 03, 89[G02B, G02F]

View all patents..

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!.