US3553094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cathodically protecting a metal pipe
Assignee: Reynolds Metals Co
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Filing: 1968-04-22
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Granted: 1971-01-05
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Expires: 1988-04-22
Abstract
Abstract THIS DISCLOSURE RELATES TO A DEVICE FOR CATHODICALLY PROTECTING COATED METAL PIPE WHICH COMPRISES A SACRIFICIAL ANODE IN COMBINATION WITH SIMPLE MEANS ENABLING SUCH ANODE TO BE READILY ELECTRICALLY CONNECTED TO SUCH PIPE IN THE FIELD WITHOUT REQUIRING SPECIAL TOOLS OR EQUIPMENT.
Inventors
- 👤 Irvin C Scott Jr
- 👤 Layle B Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:43
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/20; C23F13/18; C23F2213/00; C23F2213/30; C23F2213/32
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |