Patent US2688692A successfully refreshed from Google Patents.
Patent US3796631A successfully refreshed from Google Patents.
US3796631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for preparing polynucleotides
Assignee: Choay SA
•
Filing: 1971-11-09
•
Granted: 1974-03-12
•
Expires: 1991-11-09
Abstract
Abstract THE CORRESPONDING MUCLEOTIDES ARE POLYMERIZED IN THE PRESENCE OF A PHOSPHORYLASE POLYNUCLEOTIDE ENZYME WHICH IS ADDED TO THE MEDIUM IN SUCCESSIVE FRACTIONS AT INTERVALS OF TIME EACH CORRESPONDING SUBSTANTIALLY TO THE TIME NECESSARY FOR THE COMPLETE DEVELOPMENT OF THE PHASE OF THE REACTION WHICH FOLLOWS THE ADDITION OF THE PRECEDING ENZYME FRACTION. IT APPLIES PARTICULARLY TO THE PREPARATION OF "POLY I" AND "POLY C".
Inventors
- 👤 J Choay
- 👤 M Sakouhi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:37
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/30; C12P19/34; A; A61; A61K; A61K39/00; A61K39/39; A61K2039/555; A61K2039/55511; A61K2039/55561; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/831
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |