| Title of Invention | PHOTOCHROMIC BIS-NAPHTHOPYRAN COMPOUNDS AND METHODS FOR THEIR MANUFACTURE |
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| Abstract | The invention provides photochromic bis-naphthopyran compounds of formula (I), as well as methods for their manufacture and their use. The bis-naphthopyran compounds of the invention exhibit a wide range of color, i.e., from pink to purple to blue gray, upon activation by a source of UV light. Additionally, the bis-naphthopyran compounds of the present invention exhibit broad coloration ability, fast response as to both color change on activation and return to original color, and good fatigue-resistance. (FIG.NIL). |
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272-kolnp-2004-granted-abstract.pdf
272-kolnp-2004-granted-assignment.pdf
272-kolnp-2004-granted-claims.pdf
272-kolnp-2004-granted-correspondence.pdf
272-kolnp-2004-granted-description (complete).pdf
272-kolnp-2004-granted-examination report.pdf
272-kolnp-2004-granted-form 1.pdf
272-kolnp-2004-granted-form 18.pdf
272-kolnp-2004-granted-form 3.pdf
272-kolnp-2004-granted-form 5.pdf
272-kolnp-2004-granted-form 6.pdf
272-kolnp-2004-granted-gpa.pdf
272-kolnp-2004-granted-letter patent.pdf
272-kolnp-2004-granted-reply to examination report.pdf
272-kolnp-2004-granted-specification.pdf
| Patent Number | 221101 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Indian Patent Application Number | 00272/KOLNP/2004 | |||||||||
| PG Journal Number | 25/2008 | |||||||||
| Publication Date | 20-Jun-2008 | |||||||||
| Grant Date | 18-Jun-2008 | |||||||||
| Date of Filing | 01-Mar-2004 | |||||||||
| Name of Patentee | JOHNSON & JOHNSON VISION CARE, INC. | |||||||||
| Applicant Address | 7500 CENTURION PARKWAY SUITE 100, JACKSONVILLE FL 32256 | |||||||||
Inventors:
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| PCT International Classification Number | C07D 409/04 | |||||||||
| PCT International Application Number | PCT/US02/25669 | |||||||||
| PCT International Filing date | 2002-08-13 | |||||||||
PCT Conventions:
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