US 9422260
Process for the synthesis of 4,5,6,7-tetrachloro-3′,6′-dihydroxy-2′,4′,5′,7′-tetraiodo-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one(Rose Bengal) and related xanthenes
granted A61PA61P1/00A61P1/02
Quick answer
US patent 9422260 (Process for the synthesis of 4,5,6,7-tetrachloro-3′,6′-dihydroxy-2′,4′,5′,7′-tetraiodo-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one(Rose Bengal) and related xanthenes) held by Provectus Pharmatech, Inc. expires Mon Aug 18 2036 00:00:00 GMT+0000 (Coordinated Universal Time). Status: granted.
Key facts
- Applicant
- Provectus Pharmatech, Inc.
- Grant date
- Tue Aug 23 2016 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Aug 18 2036 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 11
- CPC classes
- A61P, A61P1/00, A61P1/02, A61P11/00, A61P13/00