Patent US4260741A successfully refreshed from Google Patents.
US4260741A
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Low-density xanthan gums
Assignee: Monsanto Co
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Filing: 1979-06-22
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Granted: 1981-04-07
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Expires: 1999-06-22
Abstract
Abstract A form of xanthan gum is disclosed which is less dense than regular xanthan gum and which exhibits an increased hydration rate.
Inventors
- 👤 Harry R. Schuppner, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:03
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0024; C08B37/0033; C08L; C08L5/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
16 words
A form of xanthan gum wherein the retained liquid is at least 84% lower alkyl alcohol.
Claim 2
Dependent Claim
16 words
A form of xanthan gum wherein the retained liquid is at least 84% lower alkyl alcohol.
Claim 3
Dependent Claim
13 words
A gum of claim 1 where the gum is low calcium xanthan gum.
Claim 4
Dependent Claim
15 words
A gum of claim 2 where the gum is low calcium, smooth flow xanthan gum.
Claim 5
Dependent Claim
18 words
A gum of claims 1 or 2 where the retained liquid is at least 91% lower alkyl alcohol.
Claim 6
Dependent Claim
10 words
A gum of claim 4 where the alcohol is isopropanol.
Claim 7
Dependent Claim
14 words
A gum of claim 4 where the retained liquid is at least 97.5% isopropanol.
Claim 8
Dependent Claim
46 words
In a process for preparing xanthan gums from fermentation beer which comprises precipitation with lower alkyl alcohol, drying, and milling, the improvement which comprises increasing the lower alkyl alcohol content of the retained liquid of said gums to at least 84% prior to drying and milling.
Claim 9
Dependent Claim
46 words
In a process for preparing xanthan gums from fermentation beer which comprises precipitation with lower alkyl alcohol, drying, and milling, the improvement which comprises increasing the lower alkyl alcohol content of the retained liquid of said gums to at least 84% prior to drying and milling.
Claim 10
Dependent Claim
18 words
The process of claim 7 where the alcohol content is at least 91% and the alcohol is isopropanol.
Claim 11
Dependent Claim
13 words
The process of claim 8 where the alcohol content is at least 97.5%.
References Cited (Backward Citations)
US2231283A
Cited
US4053699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |