US 8530675
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 8530675 (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 Pharmaceuticals, Inc. expires Mon Sep 05 2033 00:00:00 GMT+0000 (Coordinated Universal Time). Status: granted.
Key facts
- Applicant
- Provectus Pharmaceuticals, Inc.
- Grant date
- Tue Sep 10 2013 00:00:00 GMT+0000 (Coordinated Universal Time)
- Expiration
- Mon Sep 05 2033 00:00:00 GMT+0000 (Coordinated Universal Time)
- Claims
- 83
- CPC classes
- A61P, A61P1/00, A61P1/02, A61P11/00, A61P13/00