US4771215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device with a biochemical luminous reaction system
Assignee: Canon Inc
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Filing: 1986-07-29
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Granted: 1988-09-13
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Expires: 2006-07-29
Abstract
Abstract A display device is provided which comprises a medium includng a biochemical luminous reaction system and an electrode which controls electrochemically the concentration of at least one of reactants participating in said reaction system in a cell. The luminous reaction system may include an enzyme, and the electrode may be modified with a polymer.
Inventors
- 👤 Hirohide Munakata
- 👤 Satoshi Yuasa
- 👤 Yoko Yoshinaga
- 👤 Masahiro Haruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:52
CPC Classifications
F; F21; F21K; F21K2/00; F21K2/06; F21K2/08; C; C09; C09K; C09K11/00; C09K11/06; C09K11/07; G; G09; G09F; G09F9/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
101 words
A display device comprising a cell containing a reaction medium for a biochemcial luminous reaction system involving at least two reactants, an electrode in contact with said reaction medium, a counter-electrode spaced from said electrode an in contact with said reaction medium, means for applying a potential across said electrodes, and at least two reactants; said reactants individually being in the reaction medium or releasably incorporated in said electrode; said electrode being capable of electrochemically controlling the concentration of at least one reactant in said reaction medium by reversibly releasing said at least one reactant in response to an applied potential.
Claim 2
Dependent Claim
101 words
A display device comprising a cell containing a reaction medium for a biochemcial luminous reaction system involving at least two reactants, an electrode in contact with said reaction medium, a counter-electrode spaced from said electrode an in contact with said reaction medium, means for applying a potential across said electrodes, and at least two reactants; said reactants individually being in the reaction medium or releasably incorporated in said electrode; said electrode being capable of electrochemically controlling the concentration of at least one reactant in said reaction medium by reversibly releasing said at least one reactant in response to an applied potential.
Claim 3
Dependent Claim
15 words
A display device according to claim 1, wherein said medium is water containing an enzyme.
Claim 4
Dependent Claim
16 words
A display device according to claim 1, wherein said medium is an electrolyte containing an enzyme.
Claim 5
Dependent Claim
14 words
A display device according to claim 1, wherein said electrode comprises a metal oxide.
Claim 6
Dependent Claim
21 words
A display device according to claim 1, wherein said electrode comprises a conductor modified with a polymer film on its surface.
Claim 7
Dependent Claim
26 words
A display device according to claim 5, wherein said polymer is selected from the group consisting of polypyrrole, polythienylene, polyacetylene, poly-p-phenylene, poly-m-phenylene sulfide, polyindole and polyfuran.
Claim 8
Dependent Claim
23 words
A display device according to claim 5, wherein said polymer film has a thickness within the range of from 1μm to 100 μm.
Claim 9
Dependent Claim
87 words
A display device according to claim 1, wherein said luminous reaction is a reaction in which a nucleotide compound having the formula shown below participates: ##STR3## (wherein R 1 represents a heterocyclic base selected from adenine, guanine, cytosine, uracil and thymine, R 2 represents hydrogen, nicotinamide nucleotide or its reduced derivative, or riboflavin or its reduced derivative, R 3 represents --OH, --H or ##STR4## and n represents an integer of 1 to 3), said nucleotide compound being doped into said electrode or released from within said electrode.
Claim 10
Dependent Claim
14 words
A display device according to claim 1, wherein said reaction medium comprises a catalyst.
Claim 11
Dependent Claim
19 words
A display device according to claim 1, wherein said at least two reactants are flavin monomucleotde (FMN) and luciferase.
Claim 12
Dependent Claim
20 words
A display device according to claim 1, wherein said reaction medium comprises a reduced form of nicotinamide adenine dinucleotide (NAD).
Claim 13
Dependent Claim
14 words
A display device according to claim 1, wherein sadi reaction medium comprises an aldehyde.
Claim 14
Dependent Claim
22 words
A display device according to claim 1, wherein said reaction medium is a solution saturated with oxygen prepared by bubbling oxygen thereinto.
Claim 15
Dependent Claim
26 words
A display device according to claim 1, wherein said reaction medium comprises luciferase, flavin mononucleotide, a reduced form of nicotinamide adenine dinucleotide, an aldehyde, and oxygen.
Claim 16
Dependent Claim
108 words
A display device comprising a cell containing a reaction medium for a biochemical luminous reaction system involving an enzyme and at least one other reactant, an enzyme in said reaction medium, a polymer-modified electrode in contact with said reaction medium, a counter-electrode spaced from said electrode an in contact with said reaction medium, means for applying a potential across said electrodes, and at least one reactant; said reactant being in the reaction medium or releaseably incorporated in said polymer-modified electrode; said polymer-modified electrode being capable of electrochemically controlling the concentration of said reactant in said reaction medium by reversibly releasing said reactant in response to an applied potential.
Claim 17
Dependent Claim
108 words
A display device comprising a cell containing a reaction medium for a biochemical luminous reaction system involving an enzyme and at least one other reactant, an enzyme in said reaction medium, a polymer-modified electrode in contact with said reaction medium, a counter-electrode spaced from said electrode an in contact with said reaction medium, means for applying a potential across said electrodes, and at least one reactant; said reactant being in the reaction medium or releaseably incorporated in said polymer-modified electrode; said polymer-modified electrode being capable of electrochemically controlling the concentration of said reactant in said reaction medium by reversibly releasing said reactant in response to an applied potential.
Claim 18
Dependent Claim
15 words
A display device according to claim 15, wherein said medium is water containing an enzyme.
Claim 19
Dependent Claim
16 words
A display device according to claim 15, wherein said medium is an electrolyte containing an enzyme.
Claim 20
Dependent Claim
26 words
A display device according to claim 15, wherein said polymer is selected from the group consisting of polypyrrole, polythienylene, polyacetylene, poly-p-phenylene, poly-m-phenylene sulfide, polyindole and polyfuran.
Claim 21
Dependent Claim
24 words
A display device according to claim 15, wherein said polymer film has a thickness within the range of from 1 μm to 100 μm.
Claim 22
Dependent Claim
87 words
A display device according to claim 15, wherein said luminescent reaction is a reaction in which a nucleotide compound having the formula shown below participates: ##STR5## (wherein R 1 represents a heterocyclic base selected from adenine, guanine, cytosine, uracil and thymine, R 2 represents hydrogen, nicotinamide nucleotide or its reduced derivative, or riboflavin or its reduced derivative, R 3 represents --OH, --H or ##STR6## and n represents an integer of 1 to 3), said nucleotide compound being doped into said electrodes or released from within said electrodes.
Claim 23
Dependent Claim
14 words
A display device according to claim 15, wherein said reaction medium comprises a catalyst.
Claim 24
Dependent Claim
19 words
A display device according to claim 15, wherein said at least two reactants are flavin monomucleotide (FMN) and luciferase.
Claim 25
Dependent Claim
20 words
A display device according to claim 15, wherein said reaction medium comprises a reduced form of nicotinamide adenine dinucleotide (NAD).
Claim 26
Dependent Claim
14 words
A display device according to claim 15, wherein said reaction medium comprises an aldehyde.
Claim 27
Dependent Claim
22 words
A display device according to claim 15, wherein said reaction medium is a solution saturated with oxygen prepared by bubbling oxygen thereinto.
Claim 28
Dependent Claim
26 words
A display device according to claim 15, wherein said reaction medium comprises luciferase, flavin mononucleotide, a reduced form of nicotinamide adenine dinucleotide, an aldehyde, and oxygen.
References Cited (Backward Citations)
US3213440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |