Assignee
RHONE POULENC FIBRES
FR70 patents
Top patents by PatentIndex Score
US6559333B1May 6, 2003
Method for purifying aliphatic aminonitriles
RHONE POULENC FIBRES85 citations98
US5908805AJun 1, 1999
Preparation of transition metal/phosphine catalysts by hydrogen reduction
RHONE POULENC FIBRES34 citations92
US4560385ADec 24, 1985
Process for the treatment of non-woven sheets and the product obtained
RHONE POULENC FIBRES28 citations92
US6518449B1Feb 11, 2003
Method for regenerating a hydrogenation catalyst, method for hydrogenating compounds comprising nitrile functions
RHONE POULENC FIBRES26 citations91
US6492525B1Dec 10, 2002
Organometallic complexes comprising cationic heterocyclic carbenes
RHONE POULENC FIBRES22 citations90
US6258916B1Jul 10, 2001
Process for spinning from solution of polyamide-imides (PAI) based on tolylene or meta-phenylene diisocyanates and fibers thus obtained
RHONE POULENC FIBRES28 citations90
US5756635AMay 26, 1998
Process for spinning from solution of polyamide-imides (PAI) based on tolylene or met-phenylene diisocyanates and fibres thus obtained
RHONE POULENC FIBRES43 citations90
US5300626AApr 5, 1994
Process for obtaining modified polyethylene terephthalate pilling-free fibres originating from the polymer thus modified
RHONE POULENC FIBRES62 citations90
US5118550AJun 2, 1992
Substrate based on a nonwoven sheet made of chemical textile
RHONE POULENC FIBRES84 citations90
US5478909ADec 26, 1995
Process for obtaining modified polyethylene terephthalate pilling-free fibres originating from the polymer thus modified
RHONE POULENC FIBRES37 citations86
US6521779B1Feb 18, 2003
Hemihydrogenation method for dinitriles
RHONE POULENC FIBRES28 citations85
US5442903AAug 22, 1995
Thermoset twist composed of synthetic monofilaments
RHONE POULENC FIBRES29 citations84
US4710535ADec 1, 1987
Masterbatches for delustring polyamides
RHONE POULENC FIBRES38 citations84
US6469194B2Oct 22, 2002
Production of nitriles via hydrocyanation of ethylenically unsaturated organic compounds
RHONE POULENC FIBRES18 citations81
US6384283B1May 7, 2002
Method for preparing aminonitrile and diamine
RHONE POULENC FIBRES11 citations74
US6787669B1Sep 7, 2004
Method for separating and purifying adipic acid
RHONE POULENC FIBRES10 citations73
US6559339B1May 6, 2003
Method for crystallizing carboxylic acid
RHONE POULENC FIBRES7 citations73
US6147256ANov 14, 2000
Co/Cr catalyzyed oxidation of cyclohexane
RHONE POULENC FIBRES8 citations73
US6005145ADec 21, 1999
Metallic compounds useful as catalysts
RHONE POULENC FIBRES10 citations73
US5763655AJun 9, 1998
Preparation of pentenoic acids via hydroxycarbonylation of butadiene
RHONE POULENC FIBRES9 citations73
US5431782AJul 11, 1995
Synthetic papers based on thermally stable fibres, pulp and binder and process for obtaining them
RHONE POULENC FIBRES16 citations73
US5095070AMar 10, 1992
Polyamide-imide solutions and the process for obtaining them
RHONE POULENC FIBRES10 citations73
US6312578B1Nov 6, 2001
Method for extracting amine compounds from a liquid medium
RHONE POULENC FIBRES12 citations72
US6083869AJul 4, 2000
Method for preparing ammoxidation catalysts
RHONE POULENC FIBRES10 citations72
US6072070AJun 6, 2000
Vanadium/antimony/titanium mixed oxide and process of use in vapor phase ammoxidation of an alkane
RHONE POULENC FIBRES7 citations72
US5981790ANov 9, 1999
Method for partially hydrogenating dinitriles to aminonitriles
RHONE POULENC FIBRES9 citations72
US5900506AMay 4, 1999
Method of processing reaction mixtures obtained from the oxidation of cyclohexane
RHONE POULENC FIBRES7 citations72
US5723603AMar 3, 1998
Process for the preparation of lactams
RHONE POULENC FIBRES9 citations72
US5684119ANov 4, 1997
Solutions of polyamideimides in γ-butyrolactone, process for obtaining them and the yarns thus obtained
RHONE POULENC FIBRES13 citations72
US5663392ASep 2, 1997
Preparation of VSba aTib Ox ammoxidation catalysts
RHONE POULENC FIBRES10 citations72
US4950700AAug 21, 1990
Polyamide-imide solutions and a process for obtaining them
RHONE POULENC FIBRES16 citations72
US6232488B1May 15, 2001
Method for hydrogenating dinitriles
RHONE POULENC FIBRES12 citations71
US6100396AAug 8, 2000
Method for purifying lactams
RHONE POULENC FIBRES11 citations71
US6069246AMay 30, 2000
Method for treating lactams
RHONE POULENC FIBRES8 citations71
US4518658AMay 21, 1985
Waterproof membrane with fuse bonded non-woven reinforcement
RHONE POULENC FIBRES8 citations71
US6478968B1Nov 12, 2002
Method for filtering a three-phased reaction mixture
RHONE POULENC FIBRES7 citations69
US6613939B2Sep 2, 2003
Purified sulfonated organophosphorus compounds and catalysis of organic reactions therewith
RHONE POULENC FIBRES11 citations68
US5238637AAug 24, 1993
Process for obtaining polyamide yarns with better output efficiency
RHONE POULENC FIBRES6 citations68
US6482297B1Nov 19, 2002
Method for distilling ammonia
RHONE POULENC FIBRES8 citations67
US5336709AAug 9, 1994
Undrawn pre-oriented pet yarns with improved production efficiency
RHONE POULENC FIBRES10 citations66
US5207959AMay 4, 1993
Process for obtaining pet yarns with an improved production efficiency
RHONE POULENC FIBRES12 citations66
US4834577AMay 30, 1989
Process and means for the protection of roadway dressings against crack initiation
RHONE POULENC FIBRES19 citations66
US5159052AOct 27, 1992
Polyamide-imide based filaments, and a process for obtaining them
RHONE POULENC FIBRES7 citations65
US6635151B1Oct 21, 2003
Lactam dehydration method
RHONE POULENC FIBRES10 citations64
US6677448B1Jan 13, 2004
Method for reactivating a catalyst for cyclizing hydrolysis of an aminonitrile into a lactam and use of the regenerated catalyst for making lactams
RHONE POULENC FIBRES4 citations62
US6214190B1Apr 10, 2001
Method for separating a catalyst by membrane electrodialysis
RHONE POULENC FIBRES4 citations62
US4628682ADec 16, 1986
Spun fibre yarn and method for its manufacture
RHONE POULENC FIBRES13 citations62
US6563001B1May 13, 2003
Method for separating and purifying carboxylic acid derived from the direct oxidation of a hydrocarbon
RHONE POULENC FIBRES3 citations61
US6538156B1Mar 25, 2003
Method for purifying adipic acid by crystallization
RHONE POULENC FIBRES3 citations61
US5679237AOct 21, 1997
Electrochemical synthesis of transition metal/phosphine catalyst compounds
RHONE POULENC FIBRES6 citations61
Showing the top 50 of 70 patents by PatentIndex Score.