US2719844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing nucleosides by chemical processing
Assignee: Individual
•
Filing: 1952-10-16
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Granted: 1955-10-04
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Expires: 1972-10-16
Abstract
No abstract record available.
Inventors
- 👤 Dimroth Karl
- 👤 Kurt Georg V Holle
- 👤 Hamm Reiner
- 👤 Jaenicke Lothar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:12
CPC Classifications
C; C07; C07H; C07H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS FOR THE PRODUCTION OF NUCLEOSIDES BY HYDROLYTIC CLEAVAGE OF A NUCLEIC ACID BY HEATING THE NUCLEIS ACID IN AN AQUEOUS SOLUTION THE IMPROVEMENTS CONSISTING IN ADJUSTING THE AQUEOUS SOLUTION OF THE NUCLEIC ACID TO A PH-VALUE OF ABOUT 6.5 TO 7.5 AND THEN HEATING THE SAME IN THE PRESENCE OF 10 TO 20 TIMES THE AMOUNT BY WEIGHT, CALCULATED ON NUCLEIC ACID, OF A 1 TO 7 TIMES MOLAR BUFFERING COMPOUND, AND HEREWITH MAINTAINING THE PH-VALUE AT 6.5 TO 7.5 BY BUFFERING THE PHOSPHORIC ACID SPLIT OFF DURING HYDROLYSIS.
Claim 2
Dependent Claim
92 words
IN A PROCESS FOR THE PRODUCTION OF NUCLEOSIDES BY HYDROLYTIC CLEAVAGE OF A NUCLEIC ACID BY HEATING THE NUCLEIS ACID IN AN AQUEOUS SOLUTION THE IMPROVEMENTS CONSISTING IN ADJUSTING THE AQUEOUS SOLUTION OF THE NUCLEIC ACID TO A PH-VALUE OF ABOUT 6.5 TO 7.5 AND THEN HEATING THE SAME IN THE PRESENCE OF 10 TO 20 TIMES THE AMOUNT BY WEIGHT, CALCULATED ON NUCLEIC ACID, OF A 1 TO 7 TIMES MOLAR BUFFERING COMPOUND, AND HEREWITH MAINTAINING THE PH-VALUE AT 6.5 TO 7.5 BY BUFFERING THE PHOSPHORIC ACID SPLIT OFF DURING HYDROLYSIS.
References Cited (Backward Citations)
US2152662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |