EP 0896685 A4 20000719 - ORGANIC PHOTOCHROMIC CONTACT LENS COMPOSITIONS
Title (en)
ORGANIC PHOTOCHROMIC CONTACT LENS COMPOSITIONS
Title (de)
ORGANISCHE PHOTOCHROME MISCHUNGEN FÜR KONTAKTLINSEN
Title (fr)
COMPOSITIONS POUR LENTILLES DE CONTACT PHOTOCHROMIQUES ORGANIQUES
Publication
Application
Priority
- US 9706776 W 19970421
- US 1651796 P 19960430
Abstract (en)
[origin: WO9741468A1] The invention discloses organic photochromic contact lenses. In particular, it discloses a photochromic contact lens comprising organic photochromic materials consisting of a transparent polymer having a refractive index equal to at least 1.54 and at least one photochromic dye selected from the group consisting of spirooxazines, spiropyrans, chromenes, and a mixture of these.
IPC 1-7
IPC 8 full level
G02B 5/23 (2006.01)
CPC (source: EP)
G02B 5/23 (2013.01)
Citation (search report)
- [PA] WO 9618926 A1 19960620 - CORNING INC [US], et al
- [PA] WO 9619741 A1 19960627 - CORNING INC [US], et al
- [A] EP 0605293 A1 19940706 - ESSILOR INT [FR]
- [A] US 4306780 A 19811222 - TARUMI NIRO, et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 007, no. 213 (C - 187) 20 September 1983 (1983-09-20) & DATABASE WPI Derwent World Patents Index; AN 1983-737296
- See references of WO 9741468A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9741468 A1 19971106; EP 0896685 A1 19990217; EP 0896685 A4 20000719
DOCDB simple family (application)
US 9706776 W 19970421; EP 97918785 A 19970421