Global patent index - EP 0896685 A4

EP 0896685 A4 2000-07-19 - 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

EP 0896685 A4 (EN)

Application

EP 97918785 A

Priority

  • US 9706776 W
  • US 1651796 P

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 (main, further and additional classification)

G02B 5/23; G02B 1/04

IPC 8 full level (invention and additional information)

G02B 5/23 (2006.01)

CPC (invention and additional information)

G02B 5/23 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9741468 A1 19971106; EP 0896685 A1 19990217; EP 0896685 A4 20000719

INPADOC legal status

2006-05-10 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20051101

2000-07-19 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20000606

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB

2000-07-19 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7G 02B 5/23 A, 7G 02B 1/04 B

1999-02-17 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19981120

1999-02-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB