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US2716084A Expired / Lapsed US ⏱️ 0.0 years remaining

Production of endodextranase by aspergillus wenth

Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1953-12-01
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Granted: 1955-08-23
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Expires: 1973-12-01
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Abstract

No abstract record available.

Inventors

  • 👤 Carlson Virginia Whiteside
  • 👤 Warner W Carlson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 10:53
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2451; C12N9/2454; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/92

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 127 words
THE METHOD OF OBTAINING A FILTRATE CONTAINING ENDODEXTRANASE HAVING THE CAPACITY TO ATTACK GLUCOSIDIC LINKAGES OF LARGE DEXTRAN MOLECULES TO THEREBY SPLIT THE LARGE MOLECULES INTO RELATIVELY LOW MOLECULAR WEIGHT SEGMENTS, WHICH COMPRISES INOCULATING ASPERGILLUS WENTU INTO A NUTRIENT MEDIUM COMPRISING AN AQUEOUS COMPOSITION CONTAINING DISSOLVED METALLIC SALTS AND, PER LITER OF WATER, FROM ABOUT 2.0 GMS. TO ABOUT 6.0 GMS. OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AMINO ACIDS AND PROTEIN SOURCES OF AMINO ACIDS, AND FROM ABOUT 5.0 GMS. TO ABOUT 50.0 GMS. OF, AS SOLE CARBOHYDRATE, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF STARCH AND GLYCOGEN, INCUBATING THE CULTURE UNTIL THE ENDO-DEXTRANASE IS ELABORATED THEREIN, AND FILTERING THE CULTURE TO REMOVE THE MOLD MAT AND LEAVE A FILTRATE CONTAINING THE ENDO-DEXTRAANATE.
Claim 2
Independent Claim 127 words
THE METHOD OF OBTAINING A FILTRATE CONTAINING ENDODEXTRANASE HAVING THE CAPACITY TO ATTACK GLUCOSIDIC LINKAGES OF LARGE DEXTRAN MOLECULES TO THEREBY SPLIT THE LARGE MOLECULES INTO RELATIVELY LOW MOLECULAR WEIGHT SEGMENTS, WHICH COMPRISES INOCULATING ASPERGILLUS WENTU INTO A NUTRIENT MEDIUM COMPRISING AN AQUEOUS COMPOSITION CONTAINING DISSOLVED METALLIC SALTS AND, PER LITER OF WATER, FROM ABOUT 2.0 GMS. TO ABOUT 6.0 GMS. OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AMINO ACIDS AND PROTEIN SOURCES OF AMINO ACIDS, AND FROM ABOUT 5.0 GMS. TO ABOUT 50.0 GMS. OF, AS SOLE CARBOHYDRATE, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF STARCH AND GLYCOGEN, INCUBATING THE CULTURE UNTIL THE ENDO-DEXTRANASE IS ELABORATED THEREIN, AND FILTERING THE CULTURE TO REMOVE THE MOLD MAT AND LEAVE A FILTRATE CONTAINING THE ENDO-DEXTRAANATE.

References Cited (Backward Citations)

US2597019A Cited
US2482055A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1958-08-22 1959-02-21 1959-08-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1962-08-22 1963-02-21 1963-08-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1966-08-22 1967-02-21 1967-08-23 $7700.00 Window Closed / Lapsed

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