US3870613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of mineral salts from milk
Assignee: Snow Brand Milk Products Co Ltd
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Filing: 1974-02-28
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Granted: 1975-03-11
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Expires: 1994-02-28
Abstract
Abstract Milk or milk products of aqueous liquid form are desalted by ion exchange membrane electrodialysis apparatus which comprises dispersing gas bubbles continuously or intermittently into said milk or milk products in the dilution compartments, simultaneously passing the said milk or milk products through therein at a linear velocity of above 5 cm./sec. and also reversing the polarities of the electrodes intermittently each other so as to effect the above said desalting without any trouble caused by the adherence of proteins and also the deposit of calcium phosphate on the surface of the said membranes.
Inventors
- 👤 Tsutomu Nakamura
- 👤 Kensuke Itoh
- 👤 Hajime Murata
- 👤 Makoto Ishikawa
- 👤 Eiichi Furuichi
- 👤 Yasuhiro Arakawa
- 👤 Shinichi Taneya
- 👤 Hiroji Motomura
- 👤 Katsutoshi Yoshimoto
- 👤 Hisao Tomokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:15
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; A; A23; A23C; A23C9/00; A23C9/14; A23C9/144; B01D61/52; B01D2321/00; B01D2321/18; B01D2321/22; B01D2321/223
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
77 words
A process for the removal of mineral salts from milk or milk products of aqueous liquid by ion exchange membrane electrodialysis apparatus having dilution compartments and concentration compartments which comprises dispersing gas bubbles continuously or intermittently into the above said milk or its products in the dilution-compartments, while simultaneously passing the above said milk or its products through said dilution compartments at a linear velocity of above 5 cm./sec. and reversing the polarities of the electrodes intermittently.
Claim 2
Dependent Claim
77 words
A process for the removal of mineral salts from milk or milk products of aqueous liquid by ion exchange membrane electrodialysis apparatus having dilution compartments and concentration compartments which comprises dispersing gas bubbles continuously or intermittently into the above said milk or its products in the dilution-compartments, while simultaneously passing the above said milk or its products through said dilution compartments at a linear velocity of above 5 cm./sec. and reversing the polarities of the electrodes intermittently.
Claim 3
Dependent Claim
77 words
A PROCESS FOR THE REMOVAL OF MINERAL SALTS FROM MILK OR MILK PRODUCTS OF AQUEOUS LIQUID BY ION EXCHANGE MEMBRANE ELECTRODIALYSIS APPARATUS HAVING DILUTION COMPARTMENTS AND CONCENTRATION COMPARTMENTS WHICH COMPRISES DISPERSING GAS BUBBLES CONTINUOUSLY OR INTERMITTENTLY INTO THE ABOVE SAID MILK OR ITS PRODUCTS IN THE DILUTION-COMPARTMENTS, WHILE SIMULTANEOUSLY PASSING THE ABOVE SAID MILK OR ITS PRODUCTS THROUGH SAID DILUTION COMPARTMENTS AT A LINEAR VELOCITY OF ABOVE 5 CM./SEC. AND REVERSING THE POLARITIES OF THE ELECTRODES INTERMITTENTLY.
Claim 4
Dependent Claim
77 words
A PROCESS FOR THE REMOVAL OF MINERAL SALTS FROM MILK OR MILK PRODUCTS OF AQUEOUS LIQUID BY ION EXCHANGE MEMBRANE ELECTRODIALYSIS APPARATUS HAVING DILUTION COMPARTMENTS AND CONCENTRATION COMPARTMENTS WHICH COMPRISES DISPERSING GAS BUBBLES CONTINUOUSLY OR INTERMITTENTLY INTO THE ABOVE SAID MILK OR ITS PRODUCTS IN THE DILUTION-COMPARTMENTS, WHILE SIMULTANEOUSLY PASSING THE ABOVE SAID MILK OR ITS PRODUCTS THROUGH SAID DILUTION COMPARTMENTS AT A LINEAR VELOCITY OF ABOVE 5 CM./SEC. AND REVERSING THE POLARITIES OF THE ELECTRODES INTERMITTENTLY.
Claim 5
Dependent Claim
18 words
The process according to claim 1, wherein said milk is cow''s milk, goat''s milk, or other cattle''s milk.
Claim 6
Dependent Claim
21 words
The process according to claim 1, wherein said milk product of aqueous liquid form is non-fat milk, whey, or butter milk.
Claim 7
Dependent Claim
13 words
The process according to claim 1, wherein said gas is nitrogen or air.
Claim 8
Dependent Claim
32 words
The process according to claim 1, wherein the volume of the gas to be blown is one-half to one-twentieth volume based on the volume of milk or its products to be treated.
Claim 9
Dependent Claim
32 words
The process according to claim 1, wherein the volume of the gas to be blown is one-fifth to one-tenth volume based on the volume of milk or its products to be treated.
Claim 10
Dependent Claim
21 words
The process according to claim 1, wherein said linear velocity of milk is in a range of 5 - 30 cm./sec.
Claim 11
Dependent Claim
37 words
The process according to claim 1, wherein the polarities of the electrodes are reversed for a period of from 30 seconds to 3 minutes once every interval of from 30 minutes to 3 hours during the operation.
Claim 12
Dependent Claim
21 words
The process according to claim 1, wherein, as ion exchange membranes, cation and anion exchange membranes are used in alternative arrangement.
Claim 13
Dependent Claim
22 words
The process according to claim 1, wherein, as ion-exchange membranes, cation-exchange membranes are used together with neutral semipermeable membranes in alternative arrangement.
Claim 14
Dependent Claim
16 words
The process according to claim 1, wherein spacers are inserted in dilution compartments and/or concentration compartments.
Claim 15
Dependent Claim
17 words
The process according to claim 1, wherein as concentrating solution 0.01 - 1 percent NaCl-solution is used.
Claim 16
Dependent Claim
20 words
The process according to claim 1, wherein, as electrode rinse, a solution of 0.5 - 5 percent NaCl-solution is used.
Claim 17
Dependent Claim
73 words
The process according to claim 1, wherein at first a certain volume of milk or its aqueous liquid product to be treated is circulated in the said apparatus and after reaching the desired degree of demineralization continuous charging of the said milk or its product to be treated is newly started while the circulating milk or its product demineralized at a desired degree is continuously discharged in the same volume as being charged.
References Cited (Backward Citations)
US3496081A
Cited
US3767548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |