WANGNER SYSTEMS CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
D03D WOVEN FABRICS; METHODS OF WEAVING; LOOMS231
 
  
 
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON128

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5857497 Woven multilayer papermaking fabric having increased stability and permeabilityJul 09, 93Jan 12, 99[D03D]
5254398 Woven multilayer papermaking fabric having increased stability and permeability and methodMay 18, 92Oct 19, 93[D03D, D21F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6415045 Papermaking fabric analysis reportExpiredMay 10, 99Jul 02, 02[G06K]
5492601 Laser apparatus and method for monitoring the de-watering of stock on papermaking machinesExpiredJul 29, 94Feb 20, 96[G01N, D21F]
5366798 Multi-layered papermaking fabric having stabilized stacked weft yarnExpiredNov 30, 93Nov 22, 94[D03D]
5297590 Papermaking fabric of blended monofilamentsExpiredFeb 11, 93Mar 29, 94[D03D]
5228482 Papermaking fabric with diagonally arranged pocketsExpiredJul 06, 92Jul 20, 93[D03D]
5202170 Papermaking felt with a non-spiralled machine direction fiber battExpiredApr 08, 91Apr 13, 93[D21F, B32B]
H001073 Spiral dryer fabricExpiredOct 18, 90Jul 07, 92[D21F]
5114777 Woven multilayer papermaking fabric having increased stability and permeability and methodExpiredAug 05, 85May 19, 92[D03D, D21F]
5066532 Woven multilayer papermaking fabric having increased stability and permeability and methodExpiredJul 16, 87Nov 19, 91[D03D, D21F, B32B]
4878278 Method for manufacture of paper making fabricsExpiredApr 29, 88Nov 07, 89[D04H]
4649964 Paper making fabric having a reduced permeability profileExpiredSep 24, 84Mar 17, 87[D03D]
4632716 Woven low permeability fabric and methodExpiredJun 08, 83Dec 30, 86[B32B]
4500590 Dryer fabric having reduced permeability in the area of the pintle jointExpiredJun 25, 84Feb 19, 85[D21F, D04H]
4490925 Low permeability spiral fabric and methodExpiredJun 08, 83Jan 01, 85[F26B]
4381612 Dryer fabric for papermaking machine and methodExpiredJun 03, 81May 03, 83[F26B]
4364421 Woven textile dryer fabric and seam and weaving methodExpiredMay 18, 79Dec 21, 82[D03D]

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