US4325846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbent materials for oils and fats
Assignee: KIMURA MARI LORRAINE
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Filing: 1980-01-30
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Granted: 1982-04-20
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Expires: 2000-01-30
Abstract
Abstract A porous adsorbent material for oils and fats consisting essentially of a sintered product of a basic composition consisting of a mixture of silica and clay having an infinite number of continuous, open pores formed therein, and a hydrophobic treatment thereon.
Inventors
- 👤 Kozo Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:38
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
A porous adsorbent material for oils and fats which consists of a sintered product produced by admixing with water a mixture composed of about 65-35 parts by weight of silica, and about 35 to 65 parts by weight of clay at such a proportion as the total is 100 parts by weight and pore-forming material capable of being burnt off at a temperature of not more than a sintering temperature for silica and clay, the water being 300-450 parts by weight, thereby making a mud-formed mixture, molding the mud-formed mixture to a desired-shape, drying the molded shape, sintering the dried shape at the sintering temperature, whereby continuous open pores are formed, and treating the sintered product with a silicone-based water repellent agent.
Claim 2
Dependent Claim
122 words
A porous adsorbent material for oils and fats which consists of a sintered product produced by admixing with water a mixture composed of about 65-35 parts by weight of silica, and about 35 to 65 parts by weight of clay at such a proportion as the total is 100 parts by weight and pore-forming material capable of being burnt off at a temperature of not more than a sintering temperature for silica and clay, the water being 300-450 parts by weight, thereby making a mud-formed mixture, molding the mud-formed mixture to a desired-shape, drying the molded shape, sintering the dried shape at the sintering temperature, whereby continuous open pores are formed, and treating the sintered product with a silicone-based water repellent agent.
Claim 3
Dependent Claim
30 words
A porous adsorbent material in accordance with claim 1 wherein clay having a content of SiO 2 three times or less than that of Al 2 O 3 is utilized.
Claim 4
Dependent Claim
25 words
A porous adsorbent material in accordance with claim 2 wherein clay having 40% each of the SiO 2 and Al 2 O 3 is utilized.
Claim 5
Dependent Claim
17 words
A porous adsorbent material in accordance with claim 1 wherein sawdust is utilized as a pore-forming material.
Claim 6
Dependent Claim
33 words
A porous adsorbent material in accordance with claim 1 wherein said mixture is admixed with 100 to 140 parts by weight of sawdust and adding 300 to 450 parts by weight of water.
Claim 7
Dependent Claim
38 words
A porous adsorbent material in accordance with claim 5 wherein said mixture is formed by mixing 50 parts by weight each of silica and clay prepared in advance and 100 parts by weight of dried sawdust with water.
Claim 8
Dependent Claim
22 words
A porous adsorbent material in accordance with claim 1 wherein the sintering temperature is in the range of 1300° to 1400° C.
Claim 9
Dependent Claim
34 words
A porous adsorbent material in accordance with claim 1, wherein the step of treating is by immersing the sintered product into an aqueous bath of the silicone-based water repellent agent and drying the product.
References Cited (Backward Citations)
US3207699A
Cited
US3484371A
Cited
US3467602A
Cited
US3526602A
Cited
US3981976A
Cited
US3862963A
Cited
US3960521A
Cited
US4039480A
Cited
US4213882A
Cited
US4206080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |