PAPERCHINE INC.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON920
 
  
 
B65H HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES277
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 1137
 
  
 
C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR 134
 
  
 
D21G CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES 112
 
  
 
D21H PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR 137
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0334,021 AIR SEAL DEVICE FOR A SPRAY APPARATUS IN A PAPERMAKING MACHINEDec 10, 14Nov 17, 16[D21H, F16J]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9708766 Cover device for a drainage apparatus for a papermaking machineJan 30, 13Jul 18, 17[D21F]
9422665 Headbox apparatusSep 04, 12Aug 23, 16[D21F]
9404588 Vacuum control valve for vacuum drainage systemApr 29, 11Aug 02, 16[F16K]
8795473 Tube bank apparatus for distributing stockOct 21, 09Aug 05, 14[D21F]
8353219 Dryer felt tension indicator apparatusJul 31, 09Jan 15, 13[G01N]
8141810 Apparatus for winding a paper webDec 22, 08Mar 27, 12[B65H]
8075737 Headbox apparatus for a papermaking machineDec 18, 07Dec 13, 11[D21F]
7955474 Tube bank apparatus for distributing stockDec 11, 08Jun 07, 11[D21F]
7897016 Headbox apparatus for a papermaking machineJan 31, 08Mar 01, 11[D21F]
7897816 Tetramine compound and organic EL deviceJan 15, 10Mar 01, 11[C07C]

View all patents..

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0139,391 Transfer apparatusAbandonedDec 10, 09Jun 16, 11[D21F]
2007/0214,984 Rod holder deviceAbandonedMar 20, 07Sep 20, 07[B41F]
2007/0180,729 Blow box apparatusAbandonedJan 26, 07Aug 09, 07[F26B]
5263623 Tensioning apparatus for a web threading endless ropeExpiredOct 28, 91Nov 23, 93[B65H]

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