US3948745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzyme electrode
Assignee: United States Department of Health and Human Services
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Filing: 1973-06-11
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Granted: 1976-04-06
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Expires: 1993-06-11
Abstract
Abstract An electrode assembly for amperometric analysis of amperometrically inactive material including an enzyme for converting the inactive material to one which is amperometrically active. The enzyme is in chemically bound form to provide improved stability and is held in contact with the electrode by means of a permeable membrane.
Inventors
- 👤 George G. Guilbault
- 👤 Glenn J. Lubrano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/002; C12Q1/005; C12Q1/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
An electrode assembly for use in amperometric analysis of a glucose solution comprising electrically insulating support means, a platinum electrode mounted in said support means and having an active exposed working face, a layer of solid polymeric material comprising a diazo derivative of polyacryclic acid covering said working face of said electrode, said polymeric material having glucose oxidase chemically bound thereto, and a cellophane membrane covering said layer of solid polymeric material and holding said layer in contact with said working face of said electrode.
Claim 2
Dependent Claim
85 words
An electrode assembly for use in amperometric analysis of a glucose solution comprising electrically insulating support means, a platinum electrode mounted in said support means and having an active exposed working face, a layer of solid polymeric material comprising a diazo derivative of polyacryclic acid covering said working face of said electrode, said polymeric material having glucose oxidase chemically bound thereto, and a cellophane membrane covering said layer of solid polymeric material and holding said layer in contact with said working face of said electrode.
References Cited (Backward Citations)
US3539455A
Cited
US3542662A
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US3536587A
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US3707455A
Cited
US3666733A
Cited
US3623960A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |