US3457253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5',5'-di-(ara)-nucleoside phosphates
Assignee: Pharmacia and Upjohn Co
•
Filing: 1965-06-01
•
Granted: 1969-07-22
•
Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 William J Wechter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:46
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/16; C07H19/20; C07H19/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
1-B-D-ARABINOFURANOSYLCYTOSIN - 5'' - YL 1 -B -DARABINOFURANOSYLURACIL - 5'' - YL PHOSPHATE.
Claim 2
Dependent Claim
13 words
1-B-D-ARABINOFURANOSYLCYTOSIN - 5'' - YL 1 -B -DARABINOFURANOSYLURACIL - 5'' - YL PHOSPHATE.
References Cited (Backward Citations)
US3208997A
Cited
US3284440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |