PILKINGTON BARNES HIND, INC.

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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 1124
 
  
 
C09B ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES 142
 
  
 
D06P DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM 118

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5534038 Tinting hydrogel materials with vat dyesMay 19, 95Jul 09, 96[D06P, C09B]
5519069 Contact lenses and materials and methods of making sameJun 06, 95May 21, 96[C08F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6743438 Colored contact lenses and method of making sameExpiredNov 09, 01Jun 01, 04[A61K, A61F, B01J, B32B]
4442141 Treatment of cellulose acetate butyrate contact lensesExpiredNov 01, 82Apr 10, 84[B05D, G02B]
4338419 Process for treatment of hydrogel lens with thiolsExpiredSep 05, 80Jul 06, 82[C08F, G02C]
4313355 Method and apparatus for manufacturing plastic lensesExpiredOct 19, 79Feb 02, 82[B23B]
4291953 Ocular membrane and method for preparation thereofExpiredAug 31, 79Sep 29, 81[G03C]
4267295 Polymeric compositions and hydrogels formed therefromExpiredFeb 09, 79May 12, 81[C08F]
4245069 Polysiloxane compositionExpiredDec 28, 78Jan 13, 81[C08L]
4208364 Process for the production of contact lensesExpiredJun 12, 78Jun 17, 80[B29D]
4202226 Method and apparatus for manufacturing plastic lensesExpiredFeb 06, 78May 13, 80[B23B]
4182723 Ocular membrane and method for preparation thereofExpiredNov 04, 77Jan 08, 80[C08L]

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