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PILKINGTON BARNES HIND INC

Overview
  • Total Patents
    80
About

PILKINGTON BARNES HIND INC has a total of 80 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United States, EPO (European Patent Office) and Australia. Its main competitors in its focus markets optics, machines and macromolecular chemistry and polymers are JESSEN WESLEY CORP, CARL ZEISS VISION ITALIA S P A and BNL EUROLENS.

Patent filings per year

Chart showing PILKINGTON BARNES HIND INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Evans John M 25
#2 Legerton Jerome A 11
#3 Doshi Praful C 11
#4 Gandhi Khushroo 11
#5 Lee Chun-Shen 11
#6 Neidlinger Hermann Heinrich 9
#7 Askari Syed Hasan 8
#8 Meyers William E 8
#9 Thakrar Ashok R 8
#10 Askari Syed H 7

Latest patents

Publication Filing date Title
US6743438B2 Colored contact lenses and method of making same
US6337040B1 Colored contact lenses and method of making same
US5818573A Opthalmic lens inspection system
US5801822A Ophthalmic lens inspection system
US5965330A Methods for fabricating annular mask lens having diffraction-reducing edges
US5905561A Annular mask lens having diffraction reducing edges
US5662706A Variable transmissivity annular mask lens for the treatment of optical aberrations
CN1162999A Optically clear polymer compositions containing an interpenetrant
US5534038A Tinting hydrogel materials with vat dyes
US5482981A Optically clear polymer compositions containing an interpenetrant
WO9509878A1 Polymer compositions suitable for use as contact lens
US5494155A Incorporation of absorbents during extraction and/or hydration of hydrogel materials used as ophthalmic devices
US5771088A Contact lens designed to accommodate and correct for the effects of presbyopia
US5748282A Multifocal contact lens
JPH08507094A Materials used to make polymeric articles
US5786883A Annular mask contact lenses
US5433898A Method of manufacturing a contact lens
EP0375291A2 Lenses