Wandel & Goltermann GmbH & Co.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5877619 Battery-operated hand field-strength meter and method of null balancing sameOct 02, 96Mar 02, 99[G01R]
5446621 Platform module system for a larger electronic systemApr 28, 94Aug 29, 95[H05K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5444806 Adaptor and plug portion for attainment of an optical plug connectionExpiredSep 23, 94Aug 22, 95[G02B]
5166514 Optical plug system for optical measuring deviceExpiredMar 08, 91Nov 24, 92[H01J]
5163057 Method of and circuit arrangement for determining a cell loss and/or a cell insertion during traversal of a cell oriented transmission device by cell structured signalsExpiredApr 17, 90Nov 10, 92[H04J]
5120943 Method of and apparatus for setting a measuring instrumentExpiredJun 18, 90Jun 09, 92[G06F]
4996699 Digitally settable frequency divider, especially for a frequency synthesizerExpiredJul 11, 89Feb 26, 91[G06F]
4986621 Optical head adapted to receive a light guide plugExpiredAug 15, 89Jan 22, 91[G02B]
4974234 Method of and circuit for the measurement of jitter modulation of zero-related digital signalsExpiredOct 02, 89Nov 27, 90[H04B]
4884180 Regulated direct-current converterExpiredNov 18, 88Nov 28, 89[H02M]
4733395 Digital word generatorExpiredApr 15, 86Mar 22, 88[G01R]
4697156 Digitally controlled variable frequency synthesizerExpiredDec 12, 86Sep 29, 87[H03L]
4514705 Low-noise digitally tunable phase-locked loop frequency generatorExpiredDec 08, 81Apr 30, 85[H03L]
4428076 Method of and system for evaluating bit errors in testing a signal pathExpiredDec 14, 81Jan 24, 84[H04L, H04B]
4380731 System for monitoring the operation of individual connectors in a multipath coupling networkExpiredMar 05, 80Apr 19, 83[G01R]
4370617 Synchronization extractor responsive to digital signalsExpiredAug 15, 80Jan 25, 83[H03K, H03B]
4325024 System for measuring signal levelsExpiredJul 11, 80Apr 13, 82[G01R]
4287469 Process and circuit arrangement for the measuring of coefficients of message-transmission equipmentExpiredJun 12, 79Sep 01, 81[G01R]
4275348 Method of and system for measuring the transmission characteristics of four-terminal networksExpiredJan 26, 79Jun 23, 81[G01R]
4220849 Circuit arrangement for the control of a digitally settable loadExpiredMay 24, 78Sep 02, 80[G06M]
4214843 Subsea grout distributorExpiredJan 03, 79Jul 29, 80[E02B]
4191930 Digitally settable frequency generatorExpiredSep 13, 78Mar 04, 80[H03B]

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