US3300380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diminishing toxicity of antiviral nu6-(hydroxyalkyl) adenines with 4-hydroxypyrazolo(3, 4-d) pyrimidine
Assignee: Pharmacia and Upjohn Co
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Filing: 1963-12-26
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Granted: 1967-01-24
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Jack E Gray
- 👤 Gerald E Underwood
- 👤 Kingsley M Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:37
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/519; A61K31/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PHARMACEUTICAL PREPARATION FOR REDUCING TOXICITY AND MAINTAINING ANTIVIRAL ACTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF N6-(HYDROXYMETHYL) ADENINE, N6-(2-HYDROXYETHYL)ADENINE AND THE PHYSIOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF WHICH COMPRISES (1) AN EFFECTIVE AMOUNT OF SAID MEMBER FOR REDUCING VIRUS TITERS AND (2) A MEMBER SELECTED FROM THE GROUP CONSISTING OF 4-HYDROXYPYRAZOLO-(3,4-D)PYRIMIDINE AND THE PHYSIOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF, WHEREIN THE RATIO OF THE FORMER MEMBER TO THE LATTER MEMBER IS FROM ABOUT 2.5:1 TO ABOUT 20:1.
Claim 2
Dependent Claim
80 words
A PHARMACEUTICAL PREPARATION FOR REDUCING TOXICITY AND MAINTAINING ANTIVIRAL ACTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF N6-(HYDROXYMETHYL) ADENINE, N6-(2-HYDROXYETHYL)ADENINE AND THE PHYSIOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF WHICH COMPRISES (1) AN EFFECTIVE AMOUNT OF SAID MEMBER FOR REDUCING VIRUS TITERS AND (2) A MEMBER SELECTED FROM THE GROUP CONSISTING OF 4-HYDROXYPYRAZOLO-(3,4-D)PYRIMIDINE AND THE PHYSIOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF, WHEREIN THE RATIO OF THE FORMER MEMBER TO THE LATTER MEMBER IS FROM ABOUT 2.5:1 TO ABOUT 20:1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |