NOVEL POLYVALENT CARBOXYLIC ACID ESTERS AND THEIR USE IN PLASTIC LENS COMPOSITIONS

Details for Australian Patent Application No. 2002236257 (hide)

Owner SHOWA DENKO K. K.

Inventors TAJIMA, Tsuneo; KAI, Kazufumi; UCHIDA, Hiroshi; OOGA, Kazuhiko

Pub. Number AU-A-2002236257

PCT Pub. Number WO2002/079140

Priority 2001-266914 04.09.01 JP; 2001-086538 26.03.01 JP; 60/279,452 29.03.01 US; 2001-124038 23.04.01 JP

Filing date 7 March 2002

Wipo publication date 15 October 2002

International Classifications

C07C 069/78 Esters of carboxylic acids

C07C 069/67 Esters of carboxylic acids

G02B 001/04 Optical elements characterised by the material of which they are made - made of organic materials, e.g. plastics

Event Publications

3 April 2003 Application Open to Public Inspection

  Published as AU-A-2002236257

19 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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