Patent US4069968A successfully refreshed from Google Patents.
US4369104A
Expired / Lapsed
US
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Continuous filament graphite composite electrodes
Assignee: BP Chemicals Hitco Inc
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Filing: 1979-10-22
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Granted: 1983-01-18
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Expires: 1999-10-22
Abstract
Abstract Improved graphite composite electrodes are provided by dispersing within the matrix resin spaced, collimated graphite fibers having a diameter below 30 microns in a direction perpendicular to the face of the electrode plate. The electrodes are particularly useful in the disinfection of aqueous liquids with low power consumption and with very low ablation of the surface of the electrode.
Inventors
- 👤 Don A. Beckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C02F2001/46133; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4616; C02F2303/00; C02F2303/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
87 words
An electrode comprising a shaped member having an electrode face and a rear face defining a thickness therebetween, said electrode comprising a composite of matrix resin surrounding spaced, parallel conductive graphite fibers each having first and second ends extending between said faces and having a diameter below thirty microns said composite including from 20 to 80% by volume of fibers, the balance being matrix resin; and a metal conductive element applied to the rear face of the electrode and in electrical contact with said first fiber ends.
Claim 2
Dependent Claim
87 words
An electrode comprising a shaped member having an electrode face and a rear face defining a thickness therebetween, said electrode comprising a composite of matrix resin surrounding spaced, parallel conductive graphite fibers each having first and second ends extending between said faces and having a diameter below thirty microns said composite including from 20 to 80% by volume of fibers, the balance being matrix resin; and a metal conductive element applied to the rear face of the electrode and in electrical contact with said first fiber ends.
Claim 3
Dependent Claim
16 words
An electrode according to claim 1 in which the fibers are disposed perpendicular to said faces.
Claim 4
Dependent Claim
19 words
An electrode according to claim 2 in which the graphite fiber has a diameter from 3 to 22 microns.
Claim 5
Dependent Claim
16 words
An electrode according to claim 3 in which the graphite fiber is a pitch based fiber.
Claim 6
Dependent Claim
19 words
An electrode according to claim 4 in which the matrix resin is an oxidation and chemical resistant thermosetting resin.
Claim 7
Dependent Claim
14 words
An electrode according to claim 5 in which the resin is an epoxy resin.
Claim 8
Dependent Claim
18 words
An electrode according to claim 6 in which the epoxy resin comprises a polyether of a polyhydric phenol.
Claim 9
Dependent Claim
17 words
An electrode according to claim 7 in which the epoxy resin is an amine cured dihydric phenol.
Claim 10
Dependent Claim
15 words
An electrode according to claim 1 in which the element is a metal screen grid.
Claim 11
Dependent Claim
18 words
An electrode according to claim 9 in which the screen grid is adhesively secured to the rear face.
Claim 12
Dependent Claim
19 words
An electrode according to claim 9 in which the element is electrodeposited onto the rear face of the electrode.
Claim 13
Dependent Claim
13 words
An electrode according to claim 1 in the shape of a flat plate.
Claim 14
Dependent Claim
26 words
An electrode according to claim 12 in which the plate is formed from a cured stack of sheets of curable resin containing spaced collimated graphite fibers.
Claim 15
Dependent Claim
18 words
An electrode according to claim 1 in which the metal element is encapsulated in a coating of resin.
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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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |