YORKSHIRE GROUP PLC

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
C09B ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES 142

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6045593 Acid yellow dye and method for using sameApr 27, 99Apr 04, 00[C09B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5904738 Gas-fade inhibitionExpiredJan 28, 98May 18, 99[1./5, D06P]
5874547 Diazotization of aminesExpiredJun 05, 97Feb 23, 99[C07C]
5772699 Stable aqueous reactive dye composition and method for stabilizing an aqueous reactive dye compositionExpiredFeb 10, 97Jun 30, 98[D06P, C09B]
4853466 Water-soluble disazo reactive dyes and metals complexes (containing phosphonic acid groups) for dyeing cellulosic fibersExpiredNov 20, 87Aug 01, 89[C09B]
4851158 N-alkyl-N-(aminophenylsulfonyl)-aminoalkylphosphonic acidsExpiredNov 20, 87Jul 25, 89[C07F]
4851516 Dyes from diazotized sulfonylaminoalkylphosphonic acids and naphtholdisulfonic acidsExpiredNov 20, 87Jul 25, 89[C09B, D06P]
4840643 Trichromatic combination of dyes for nylonExpiredMar 16, 88Jun 20, 89[C09B]
4830788 Process for preparation of substituted-aminomethylphosphonic acidsExpiredNov 20, 87May 16, 89[C07F]
4813970 Method for improving the lightfasteness of nylon dyeings using copper sulfonatesExpiredFeb 10, 88Mar 21, 89[D06P]
4749784 Alkanol substituted disazo orange dye for nylonExpiredFeb 10, 87Jun 07, 88[C09B, D06P]
4654045 Process for preparation of concentrated anionic red dye solutionsExpiredJan 30, 86Mar 31, 87[C09B]
4579561 Process for trichromatic dyeing polyamide fibersExpiredJan 09, 85Apr 01, 86[C09B]

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.