US5041224A
Expired / Lapsed
US
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Ion permeable membrane and ion transport method by utilizing said membrane
Assignee: Canon Inc
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Filing: 1989-03-28
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Granted: 1991-08-20
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Expires: 2009-03-28
Abstract
Abstract An ion permeable membrane, comprising two or more groups of substances having different sensitive wavelength regions in a lipid membrane, is provided.
Inventors
- 👤 Junji Ohyama
- 👤 Harumi Iwashita
- 👤 Kinya Kato
- 👤 Nobuko Yamamoto
- 👤 Masanori Sakuranaga
- 👤 Tsunehiro Kanno
- 👤 Yasuko Tomida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:40
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
50 words
An ion permeable membrane, comprising two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 2
Dependent Claim
50 words
An ion permeable membrane, comprising two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 3
Dependent Claim
17 words
The ion permeable membrane according to claim 1, wherein said substances are photoreceptive proteins and derivatives thereof.
Claim 4
Dependent Claim
19 words
The ion permeable membrane according to claim 1, wherein said substances perform an ion active transport on light irradiation.
Claim 5
Dependent Claim
17 words
The ion permeable membrane according to claim 2, wherein said photoreceptive protein is rhodopsin, porphyropsin or iodopsin.
Claim 6
Dependent Claim
16 words
The ion permeable membrane according to claim 2, wherein said photoreceptive protein is bacteriorhodopsin or halorhodopsin.
Claim 7
Dependent Claim
28 words
The ion permeable membrane according to claim 1, wherein said substances are oriented in the lipid membrane so that the ion may become permeable in the same direction.
Claim 8
Dependent Claim
30 words
The ion permeable membrane according to claim 1, wherein said substances are oriented in the lipid membrane so that a kind of substance may transport ion in the same direction.
Claim 9
Dependent Claim
35 words
The ion permeable membrane according to claim 1, wherein said substances are oriented in the lipid membrane so that a kind of substance may transport ion in the opposite direction to another kind of substance.
Claim 10
Dependent Claim
19 words
The ion permeable membrane according to claim 1, wherein said ion permeable membrane is formed on a porous substrate.
Claim 11
Dependent Claim
23 words
The ion permeable membrane according to claim 9, wherein said porous substrate is paper or fabric made of collagen, cellulose, or porous glass.
Claim 12
Dependent Claim
52 words
An ion permeable membrane, comprising ionophore and two or more group of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 13
Dependent Claim
52 words
An ion permeable membrane, comprising ionophore and two or more group of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 14
Dependent Claim
17 words
The ion permeable membrane according to claim 11, wherein said substances are photoreceptive proteins and derivatives thereof.
Claim 15
Dependent Claim
19 words
The ion permeable membrane according to claim 11, wherein said substances perform an ion active transport on light irradiation.
Claim 16
Dependent Claim
17 words
The ion permeable membrane according to claim 12, wherein said photoreceptive protein is rhodopsin, porphyropsin or iodopsin.
Claim 17
Dependent Claim
16 words
The ion permeable membrane according to claim 12, wherein said photoreceptive protein is bacteriorhodopsin or halorhodopsin.
Claim 18
Dependent Claim
28 words
The ion permeable membrane according to claim 11, wherein said substances are oriented in the lipid membrane so that the ion may become permeable in the same direction.
Claim 19
Dependent Claim
30 words
The ion permeable membrane according to claim 11, wherein said substances are oriented in the lipid membrane so that a kind of substance may transport ion in the same direction.
Claim 20
Dependent Claim
35 words
The ion permeable membrane according to claim 11, wherein said substances are oriented in the lipid membrane so that a kind of substance may transport ion in the opposite direction to another kind of substance.
Claim 21
Dependent Claim
19 words
The ion permeable membrane according to claim 11, wherein said ion permeable membrane is formed on a porous substrate.
Claim 22
Dependent Claim
23 words
The ion permeable membrane according to claim 19, wherein said porous substrate is paper or fabric made of collagen, cellulose, or porous glass.
Claim 23
Dependent Claim
19 words
The ion permeable membrane according to claim 11, wherein said ionophore is selected from oligopeptides, polycorals, polyetherpolyamines or cyclams.
Claim 24
Dependent Claim
39 words
An ion transport method utilizing an ion permeable membrane, which comprises varying the ion permeability of said ion permeable membrane by irradiating a light on the ion permeable membrane of claim 1 by selecting the wavelength of said light.
Claim 25
Dependent Claim
39 words
An ion transport method utilizing an ion permeable membrane, which comprises varying the ion permeability of said ion permeable membrane by irradiating a light on the ion permeable membrane of claim 11 by selecting the wavelength of said light.
Claim 26
Dependent Claim
65 words
An ion transport device, comprising an ion permeable membrane, which comprises two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a means for sensing an ion concentration change, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 27
Dependent Claim
65 words
An ion transport device, comprising an ion permeable membrane, which comprises two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a means for sensing an ion concentration change, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 28
Dependent Claim
68 words
An ion transport device, comprising an ion permeable membrane, which comprises an ionophore and two or more group of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a means for sensing an ion concentration change, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 29
Dependent Claim
68 words
An ion transport device, comprising an ion permeable membrane, which comprises an ionophore and two or more group of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a means for sensing an ion concentration change, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 30
Dependent Claim
68 words
An ion transport device, comprising an ion permeable membrane, which comprises two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a vessel containing a solution for dipping said ion permeable membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 31
Dependent Claim
68 words
An ion transport device, comprising an ion permeable membrane, which comprises two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a vessel containing a solution for dipping said ion permeable membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 32
Dependent Claim
71 words
An ion transport device, comprising an ion permeable membrane, which comprises an ionophore and two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a vessel containing a solution for dipping said ion permeable membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
Claim 33
Dependent Claim
71 words
An ion transport device, comprising an ion permeable membrane, which comprises an ionophore and two or more groups of substances having selected different sensitive wavelength regions and being capable of transporting ions upon absorption of light in a lipid membrane and a vessel containing a solution for dipping said ion permeable membrane, whereby ion permeability of said membrane is controlled by irradiating said membrane with a light having a selected wavelength.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |