US3671398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polysaccharides by fermentation
Assignee: Melle Bezons SA
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Filing: 1970-09-14
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Granted: 1972-06-20
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Expires: 1990-09-14
Abstract
Abstract A process for producing polysaccharides by fermentation of carbohydrates in a fermentation bath with microorganisms of the class Xanthomonas in which the broth is formulated to contain a source of nitrogen selected from the group consisting of lactoserum or lactoserum and cereal bran in amounts corresponding to 5 to 15 grams of lactoserum on a dry solids basis per liter of broth when used alone, or 3 to 7 grams of lactoserum and 4 to 8 grams per liter of cereal bran when both are present in the broth as a source of nitrogen.
Inventors
- 👤 Pierre Colin
- 👤 Roger Merle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:16
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/04; C12P19/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/91
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
17 words
The process as claimed in claim 1 in which the lactoserum is employed in a liquid state.
Claim 2
Dependent Claim
21 words
The process as claimed in claim 1 in which the lactoserum is employed in powder form after vaporization off of liquid.
Claim 3
Dependent Claim
38 words
The process as claimed in claim 1 in which the lactoserum, when employed alone as the nitrogen source, is present in an amount within the range of 5 to 15 grams of dry solids per liter of broth.
Claim 4
Dependent Claim
34 words
The process as claimed in claim 1 in which the lactoserum, when employed alone as the nitrogen source, is present in an amount of about 10 grams of dry solids per liter of broth.
Claim 5
Dependent Claim
47 words
The process as claimed in claim 1 in which both lactoserum and cereal bran are present in the broth in an amount within the range of 3 to 7 grams lactoserum on a dry solids basis and 4 to 8 grams cereal bran per liter of broth.
Claim 6
Dependent Claim
42 words
The process as claimed in claim 1 in which both lactoserum and cereal bran are present in the broth in an amount of about 5 grams lactoserum on a dry solids basis and about 6 grams cereal bran per liter of broth.
References Cited (Backward Citations)
US3427226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |