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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
C07C 255/00 C07D 207/00 C07D 487/00 |
| (11) | Number of the document | 3448 |
| (13) | Kind of document | B |
| (21) | Application number | IP539 |
| (22) | Date of filing the application | 1993-05-12 |
| (41) | Date of publication of the application | 1994-11-25 |
| (45) | Date of publication of patent | 1995-10-25 |
| (30) | Number | Date | Country code |
| 429100 | 1989-10-31 | US | |
| 429099 | 1989-10-31 | US | |
| 429098 | 1989-10-31 | US | |
| 429097 | 1989-10-31 | US | |
| 442798 | 1989-11-29 | US | |
| PCT/US90/05756 | 1990-10-12 | WO |
| (71) |
BioCryst Pharmaceuticals, Inc.,
1075 13th Street South, Birmingham, Alabama 35205,
US
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| (72) |
John A. MONTGOMERY, US
John A. SECRIST,III, US Mark David ERION, US Steven E. EALICK, US Wayne C. GUIDA, US Shri NIWAS, US |
| (73) |
BioCryst Pharmaceuticals, Inc.,
1075 13th Street South, Birmingham, Alabama 35205,
US
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| (74) |
Liudmila GERASIMOVIČ,
IĮ "Liudmila Gerasimovič, Patentinis patikėtinis", Vingrių g. 13-42, LT-01141 Vilnius,
LT
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| (54) | INHIBITORS OF PURINE NUCLEOSIDE PHOSPHORYLASE AND PROCESS FOR PREPARING THEREOF |
| Payment date | Validity (years) | Amount | |
| 2000-05-03 | 8 | 640.00 LTL |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 2001-05-12 |