US4755494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of pectin or pectin-like material in water-based ceramics
Assignee: TRUSTEES OF DARTMOUTH COLLEGE A CORP OF NEW HAMPSHIRE
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Filing: 1987-02-12
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Granted: 1988-07-05
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Expires: 2007-02-12
Abstract
Abstract The use of pectins (or pectin-like materials) as an additive to clay to provide clay compositions of enhanced plasticity and stability is disclosed.
Inventors
- 👤 George C. Ruben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:16
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
A clay composition consisting essentially of a mixture of clay and pectin having from about 25 to about 4400 sugar units, the amount of pectic material ranging from about 0.05 to about 5% by weight in relation to the clay.
Claim 2
Dependent Claim
40 words
A clay composition consisting essentially of a mixture of clay and pectin having from about 25 to about 4400 sugar units, the amount of pectic material ranging from about 0.05 to about 5% by weight in relation to the clay.
Claim 3
Dependent Claim
19 words
A clay composition of claim 1, wherein the amount of pectin is about 0.1 to about 2.0 weight percent.
Claim 4
Dependent Claim
42 words
A clay composition consisting essentially of a mixture of clay, mullite, grog and a pectin having from about 25 to about 4400 sugar units, the amount of pectic material ranging from 0.05 to about 5% by weight in relation to the clay.
Claim 5
Dependent Claim
42 words
A clay composition consisting essentially of a mixture of clay, mullite, grog and a pectin having from about 25 to about 4400 sugar units, the amount of pectic material ranging from 0.05 to about 5% by weight in relation to the clay.
Claim 6
Dependent Claim
19 words
A clay composition of claim 3, wherein the amount of pectin is about 0.1 to about 1.0 weight percent.
Claim 7
Dependent Claim
57 words
A clay composition comprising a mixture of clay and a said pectin consisting essentially of a polysaccharide chain having from 25 to about 4400 sugar units and at least four esterified or nonesterified carboxylic acid groups per ten sugar units, the amount of pectin ranging from 0.5 to about 5% by weight in relation to the clay.
Claim 8
Dependent Claim
57 words
A clay composition comprising a mixture of clay and a said pectin consisting essentially of a polysaccharide chain having from 25 to about 4400 sugar units and at least four esterified or nonesterified carboxylic acid groups per ten sugar units, the amount of pectin ranging from 0.5 to about 5% by weight in relation to the clay.
Claim 9
Dependent Claim
16 words
A clay composition of claim 5, wherein the pectin is 0.1 to aboout 1.0 weight percent.
References Cited (Backward Citations)
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Cited
US2776897A
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US4206245A
Cited
US4022633A
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US4219362A
Cited
US4333863A
Cited
US4452905A
Cited
US4520139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |