SNF SA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 2123
 
  
 
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

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6797785 Methods for synthesizing polyvinyl amine (PVA) type flocculating and coagulating agents, novel agents thus obtained, uses thereof and improved paper types thus obtainedDec 31, 01Sep 28, 04[C08F]
6579417 Flocculation method for making a paper sheetMar 09, 01Jun 17, 03[D21H]
5925714 Surfactant for self-inverting polyacrylmidesMar 04, 94Jul 20, 99[C08F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0283,232 PAPER AND PAPERBOARD PRODUCTION PROCESS AND CORRESPONDING NOVEL RETENTION AND DRAINAGE AIDS, AND PAPERS AND PAPERBOARDS THUS OBTAINEDAbandonedJul 28, 09Nov 19, 09[C08F, D21H]
2006/0243,407 Paper and paperboard production process and corresponding novel retention and drainage aids, and papers and paperboards thus obtainedAbandonedJan 25, 06Nov 02, 06[D21H]
7026511 Synthesis of N-vinylformamideExpiredFeb 27, 04Apr 11, 06[C07C]
2006/0025,630 Synthesis on N-vinyl formamideAbandonedSep 19, 05Feb 02, 06[C07C]
6964745 Use of superabsorbent polymers for treating raw skins, corresponding compositions and methods and resulting treated skinsExpiredMar 06, 00Nov 15, 05[C09K]
6965052 Synthesis of N-vinyl formamideExpiredAug 29, 03Nov 15, 05[C07C]
2005/0150,622 Paper and paperboard production process and corresponding novel retention aids, and papers and paperboards thus obtainedAbandonedMar 09, 05Jul 14, 05[D21H]
2004/0040,683 Paper and paperboard production process and corresponding novel retention and drainage aids, and papers and paperboards thus obtainedAbandonedSep 03, 03Mar 04, 04[D21H]
2004/0028,637 Use as thickeners in cosmetics of neutralized copolymers comprising weak acid units and strong acid units, and cosmetic compositions comprising sameAbandonedAug 03, 03Feb 12, 04[A61K]
2004/0030,039 High molecular weight cationic polymers, preparation method and uses thereofAbandonedAug 05, 03Feb 12, 04[C08K]
2003/0150,575 Paper and paperboard production process and corresponding novel retention and drainage aids, and papers and paperboards thus obtainedAbandonedAug 27, 02Aug 14, 03[D21H]
4329500 Catalysts for the hydration of nitriles to amidesExpiredAug 07, 78May 11, 82[C07C]
4237303 Removal of oxazole from acrylonitrileExpiredApr 30, 79Dec 02, 80[C07D, C07C]

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