US2770573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzymatic synthesis of n-acetylglucosaminido galactose and galactosido-n-acetyl glucosamine
Assignee: Wyeth LLC
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Filing: 1953-12-10
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Granted: 1956-11-13
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Expires: 1973-12-10
Abstract
No abstract record available.
Inventors
- 👤 Gyorgy Paul
- 👤 Zilliken Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:29
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; A; A23; A23C; A23C9/00; A23C9/20; A23C9/203; C12N; C12N1/00; C12N1/20; C12N1/38; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/853
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS FOR PREPARING A MIXTURE CONTAINING NACETYL-GLUCOSAMINIDO GALACTOSE AND GALACTOSIDO-N-ACETYL GLUCOSAMINE, SAID MIXTURE HAVING HIGH ACTIVITY FOR PROMOTING THE GROWTH OF LACTOBACILLUS BIFIDUS VAR. PENN, A.T.C.C. NO. 11,863, WHICH COMPRISES REACTING LACTOSE AND N-ACETYL-D-GLUCOSAMINE IN THE PRESENCE OF AN ENZYME PRESENT IN GROWING CULTURES OF SAID LACTOBACILLUS BIFIDUS VAR. PENN MICROORGANISM AND SECURED THEREFROM BY CENTRIFUGING A GROWING CULTURE OF SAID MICROORGANISM IN ORDER THAT SAID ENZYME MAY BE SEPARATED THEREFROM, LYOPHILIZING THE SEPARATED SOLID PRODUCT, AND INTIMATELY MIXING THE DRY PRODUCT RESULTING WITH ALUMINUM OXIDE IN THE PRESENCE OF A PHOSPHATE BUFFER SOLUTION, THEREBY SECURING A SOLUTION OF SAID ENZYME.
Claim 2
Dependent Claim
102 words
THE PROCESS FOR PREPARING A MIXTURE CONTAINING NACETYL-GLUCOSAMINIDO GALACTOSE AND GALACTOSIDO-N-ACETYL GLUCOSAMINE, SAID MIXTURE HAVING HIGH ACTIVITY FOR PROMOTING THE GROWTH OF LACTOBACILLUS BIFIDUS VAR. PENN, A.T.C.C. NO. 11,863, WHICH COMPRISES REACTING LACTOSE AND N-ACETYL-D-GLUCOSAMINE IN THE PRESENCE OF AN ENZYME PRESENT IN GROWING CULTURES OF SAID LACTOBACILLUS BIFIDUS VAR. PENN MICROORGANISM AND SECURED THEREFROM BY CENTRIFUGING A GROWING CULTURE OF SAID MICROORGANISM IN ORDER THAT SAID ENZYME MAY BE SEPARATED THEREFROM, LYOPHILIZING THE SEPARATED SOLID PRODUCT, AND INTIMATELY MIXING THE DRY PRODUCT RESULTING WITH ALUMINUM OXIDE IN THE PRESENCE OF A PHOSPHATE BUFFER SOLUTION, THEREBY SECURING A SOLUTION OF SAID ENZYME.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |