US3288780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 5'-ribonucleotides
Assignee: Ajinomoto Co Inc
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Filing: 1964-02-25
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Granted: 1966-11-29
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Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Tsuchiya Yoshio
- 👤 Takenishi Tadao
- 👤 Kato Testsuya
- 👤 Muramatsu Nobutoshi
- 👤 Mori Hisao
- 👤 Yoshikawa Masaharu
- 👤 Ichikawa Takehiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
C; C07; C07H; C07H1/00; C07H1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR PREPARING A 5'' RIBONUCLEOTIDE WHICH COMPRISES: 8A) DISSOLVING A 2''3''-O-SUBSTITUTED RIBONUCLEOSIDE IN A MEDIUM MAINLY CONSISTING OF PHOSPHORYL CHLORIDE, (1) THE SUBSTITUENT IN SAID RIBONCUCLEOSIDE BEING SELECTED FROM THE GROUP CONSISTING OF THE DIVALENT ALKYLIDENE AND CYCLOALKYLIDENE RADICALS; (B) MAINTAINING THE RESULTING SOLUTION AT A TEMPERATURE BETWEEN 0*C. AND 30*C. UNTIL THE CORRESPONDING 2'',3''-O-SUBSTITUTED RIBONUCLEOSIDE-5''-PHOSPHORODICHLORIDATE IS FORMED; AND (C) HYDROLYZING SAID 2'',3''-O-SUBSTITUTED RIBONUCLEOSIDE5''-PHOSPHORODICHLORIDATE TO THE CORRESPONDING NUCLEOTIDE.
Claim 2
Dependent Claim
70 words
A PROCESS FOR PREPARING A 5'' RIBONUCLEOTIDE WHICH COMPRISES: 8A) DISSOLVING A 2''3''-O-SUBSTITUTED RIBONUCLEOSIDE IN A MEDIUM MAINLY CONSISTING OF PHOSPHORYL CHLORIDE, (1) THE SUBSTITUENT IN SAID RIBONCUCLEOSIDE BEING SELECTED FROM THE GROUP CONSISTING OF THE DIVALENT ALKYLIDENE AND CYCLOALKYLIDENE RADICALS; (B) MAINTAINING THE RESULTING SOLUTION AT A TEMPERATURE BETWEEN 0*C. AND 30*C. UNTIL THE CORRESPONDING 2'',3''-O-SUBSTITUTED RIBONUCLEOSIDE-5''-PHOSPHORODICHLORIDATE IS FORMED; AND (C) HYDROLYZING SAID 2'',3''-O-SUBSTITUTED RIBONUCLEOSIDE5''-PHOSPHORODICHLORIDATE TO THE CORRESPONDING NUCLEOTIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |