GB9827596D0 - Photochromic 2H-naphtho[1,2-b]pyrans - Google Patents

Photochromic 2H-naphtho[1,2-b]pyrans

Info

Publication number
GB9827596D0
GB9827596D0 GBGB9827596.9A GB9827596A GB9827596D0 GB 9827596 D0 GB9827596 D0 GB 9827596D0 GB 9827596 A GB9827596 A GB 9827596A GB 9827596 D0 GB9827596 D0 GB 9827596D0
Authority
GB
United Kingdom
Prior art keywords
pyrans
naphtho
photochromic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
GBGB9827596.9A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
James Robinson Speciality Ingredients Ltd
Original Assignee
James Robinson Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by James Robinson Ltd filed Critical James Robinson Ltd
Priority to GBGB9827596.9A priority Critical patent/GB9827596D0/en
Publication of GB9827596D0 publication Critical patent/GB9827596D0/en
Priority to EP99954094A priority patent/EP1140892A1/en
Priority to PCT/GB1999/003578 priority patent/WO2000035902A1/en
Ceased legal-status Critical Current

Links

GBGB9827596.9A 1998-12-15 1998-12-15 Photochromic 2H-naphtho[1,2-b]pyrans Ceased GB9827596D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GBGB9827596.9A GB9827596D0 (en) 1998-12-15 1998-12-15 Photochromic 2H-naphtho[1,2-b]pyrans
EP99954094A EP1140892A1 (en) 1998-12-15 1999-10-29 Photochromic substiituted 2h-naphtho[1,2-b]pyrans
PCT/GB1999/003578 WO2000035902A1 (en) 1998-12-15 1999-10-29 PHOTOCHROMIC SUBSTITUTED 2H-NAPHTHO[1,2-b]PYRANS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9827596.9A GB9827596D0 (en) 1998-12-15 1998-12-15 Photochromic 2H-naphtho[1,2-b]pyrans

Publications (1)

Publication Number Publication Date
GB9827596D0 true GB9827596D0 (en) 1999-02-10

Family

ID=10844256

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9827596.9A Ceased GB9827596D0 (en) 1998-12-15 1998-12-15 Photochromic 2H-naphtho[1,2-b]pyrans

Country Status (3)

Country Link
EP (1) EP1140892A1 (en)
GB (1) GB9827596D0 (en)
WO (1) WO2000035902A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348604B1 (en) * 1999-09-17 2002-02-19 Ppg Industries Ohio, Inc. Photochromic naphthopyrans
US8545984B2 (en) 2003-07-01 2013-10-01 Transitions Optical, Inc. Photochromic compounds and compositions
US8698117B2 (en) 2003-07-01 2014-04-15 Transitions Optical, Inc. Indeno-fused ring compounds
US8211338B2 (en) 2003-07-01 2012-07-03 Transitions Optical, Inc Photochromic compounds
US8518546B2 (en) 2003-07-01 2013-08-27 Transitions Optical, Inc. Photochromic compounds and compositions
US7521004B2 (en) 2003-09-18 2009-04-21 Tokuyama Corporation Chromene compound
US20070145337A1 (en) * 2005-12-23 2007-06-28 Anu Chopra Photochromic 2H-naphthopyrans
US8697890B2 (en) * 2006-10-20 2014-04-15 Alphamicron Incorporated Dichroic-photochromic 2H-naphtho[1,2-b]pyran compounds and devices
US9102652B2 (en) 2006-10-20 2015-08-11 Alphamicron Incorporated Dichroic-photochromic 2H-naphtho[1,2-b]pyran compounds and devices
EP2463280B1 (en) * 2009-08-04 2013-09-11 Tokuyama Corporation Chromene compound
EP2669278B1 (en) * 2011-01-27 2015-05-27 Tokuyama Corporation Chromene compound
PT2669277E (en) * 2011-01-28 2015-10-19 Tokuyama Corp Chromene compound
SG11202111035WA (en) 2019-05-13 2021-11-29 Alcon Inc Method for producing photochromic contact lenses

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200116A (en) * 1990-07-23 1993-04-06 Ppg Industries, Inc. Photochromic chromene compounds
JPH06306354A (en) * 1993-04-26 1994-11-01 Toray Ind Inc Photochromic material
US5651923A (en) * 1993-12-09 1997-07-29 Transitions Optical, Inc. Substituted naphthopyrans
US5458814A (en) * 1993-12-09 1995-10-17 Transitions Optical, Inc. Substituted naphthopyrans
JPH08295690A (en) * 1995-04-26 1996-11-12 Tokuyama Corp Chromene compound
US5656206A (en) * 1995-06-14 1997-08-12 Transitions Optical, Inc. Substituted naphthopyrans
US5658501A (en) * 1995-06-14 1997-08-19 Transitions Optical, Inc. Substituted naphthopyrans
CN1220734A (en) * 1996-07-25 1999-06-23 康宁股份有限公司 Naphthopyrans, compositions and articles containing them
US6197225B1 (en) * 1997-06-19 2001-03-06 Tokuyama Corporation Chromene compound

Also Published As

Publication number Publication date
EP1140892A1 (en) 2001-10-10
WO2000035902A1 (en) 2000-06-22

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)