US2961378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing phosphomannan by saccharide fermentation
Assignee: Individual
•
Filing: 1959-02-03
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Granted: 1960-11-22
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Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Robert G Benedict
- 👤 Allene R Jeanes
- 👤 Lynferd J Wickerham
- 👤 Rogovin Seymour Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:30
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF PRODUCING A PHOSPHOMANNAN HAVING CROSS-LINKED REPEATING UNITS OF ANHYDROMANNOSE, SAID UNITS BEARING ONE MONO-POTASSIUM PHOSPHATE RADICAL PER EVERY FIFTH SAID UNIT, SAID METHOD COMPRISING THE STEPS OF FERMENTING A WHOLE CULTURE OF A STRAIN OF HANSENULA HOLSTII YEAST SELECTED FROM THE GROUP CONSISTING OF HANSENULA HOLSTII NRRL Y-2448, NRRL Y-2154, AND NRRL Y-2155 FOR ABOUT 96 HOURS UNDER AEROBIC CONDITIONS AT 28*C. IN AN AQUEOUS MEDIUM CONTAINING 6 PERCENT GLUCOSE, CORN STEEP LIQUOR, TRYPTONE, POTASSIUM DIHYDROGEN PHOSPHATE, AND TRACE ELEMENTS.
Claim 2
Independent Claim
83 words
A METHOD OF PRODUCING A PHOSPHOMANNAN HAVING CROSS-LINKED REPEATING UNITS OF ANHYDROMANNOSE, SAID UNITS BEARING ONE MONO-POTASSIUM PHOSPHATE RADICAL PER EVERY FIFTH SAID UNIT, SAID METHOD COMPRISING THE STEPS OF FERMENTING A WHOLE CULTURE OF A STRAIN OF HANSENULA HOLSTII YEAST SELECTED FROM THE GROUP CONSISTING OF HANSENULA HOLSTII NRRL Y-2448, NRRL Y-2154, AND NRRL Y-2155 FOR ABOUT 96 HOURS UNDER AEROBIC CONDITIONS AT 28*C. IN AN AQUEOUS MEDIUM CONTAINING 6 PERCENT GLUCOSE, CORN STEEP LIQUOR, TRYPTONE, POTASSIUM DIHYDROGEN PHOSPHATE, AND TRACE ELEMENTS.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |