YORKSHIRE GROUP PLC
Patent Owner
Stats
- 1 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Apr 04, 2000 most recent publication
Details
- 1 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 106 Total Citation Count
- Jan 09, 1985 Earliest Filing
- 12 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Recent Publications
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Recent Patents
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Title
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
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]
4851516 Dyes from diazotized sulfonylaminoalkylphosphonic acids and naphtholdisulfonic acidsExpiredNov 20, 87Jul 25, 89[C09B, D06P]
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]
4654045 Process for preparation of concentrated anionic red dye solutionsExpiredJan 30, 86Mar 31, 87[C09B]
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