| Cited in | International search | Type: | Non-patent literature | Publication information: | [X] DATABASE WPI Week 198817, Derwent World Patents Index; AN 1988-116655, XP002517706 | Cited in | by applicant | Type: | Non-patent literature | Publication information: | PATENT ABSTRACTS OF JAPAN vol. 1997, no. 01 31 January 1997 (1997-01-31) | Type: | Non-patent literature | Publication information: | "Optical testing and Characterization", CHARACTERIZATION AND FAILURE ANALYSIS OF PLASTICS, 2003, pages 177 - 178 |