US3102079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing xanthosine by fermentation
Assignee: KH Neochem Co Ltd
•
Filing: 1961-08-02
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Granted: 1963-08-27
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Kinoshita Shukuo
- 👤 Nakayama Kiyoshi
- 👤 Suzuki Takeo
- 👤 Sato Zenroku
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:08
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/38; C12P19/40; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/828
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD OF PRODUCIG XANTHOSINE WHICH COMPRISES (A) CULTURING AT A TEMPERATURE OF FRM 20* TO 40*C. A GUANINE REQUIRING STRAIN OF AEROBACTER AEROGENES IN A CULTURE MEDIUM COMPRISING CARBON SOURCE,F NITROGEN SORUCE, INORGANIC SALT AND FROM ABOUT 30 TO 100 MILLIGRAMS PER LITER OF GUANINE, (B) MAINTAINING THE PH OF THE MEDIUM WITHIN THE RANGE OF FROM 5 TO 8 AND (C) ACCUMULATING XANTHOSINE IN SAID MEDIUM.
Claim 2
Independent Claim
68 words
A METHOD OF PRODUCIG XANTHOSINE WHICH COMPRISES (A) CULTURING AT A TEMPERATURE OF FRM 20* TO 40*C. A GUANINE REQUIRING STRAIN OF AEROBACTER AEROGENES IN A CULTURE MEDIUM COMPRISING CARBON SOURCE,F NITROGEN SORUCE, INORGANIC SALT AND FROM ABOUT 30 TO 100 MILLIGRAMS PER LITER OF GUANINE, (B) MAINTAINING THE PH OF THE MEDIUM WITHIN THE RANGE OF FROM 5 TO 8 AND (C) ACCUMULATING XANTHOSINE IN SAID MEDIUM.
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |