US2779729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic protection assembly
Assignee: Dow Chemical Co
•
Filing: 1950-07-01
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Granted: 1957-01-29
•
Expires: 1970-07-01
Abstract
No abstract record available.
Inventors
- 👤 Roy C Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:03
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A COMBINED COMPRESSION AND ELECTRICAL RESISTANCE MEMBER COMPRISING A BODY OF ELECTRICALLY INSULATING MATERIAL CONSISTING OF A TUBULAR CENTRAL PORTION HAVING AN ANNULAR COLLAR CENTRAL THEREON AND AT LEAST ONE BOSS PROTRUDING FROM EACH PLANE SURFACE OF THE COLLAR, A PAIR OF METAL WASHERS FITTING OVER THE TUBE, AND SEATING ON OPPOSITE SIDES OF THE COLLAR WITH THEIR OUTER FACES FLUSH WITH THE ENDS OF THE TUBE, EACH WASHER BEING PROVIDED WITH A HOLE ENCIRCLING EACH BOSS AND ELECTRICAL RESISTOR MEANS EMBEDDED IN THE COLLAR AND ELECTRICALLY INTERCONNECTING THE WASHERS.
Claim 2
Dependent Claim
90 words
A COMBINED COMPRESSION AND ELECTRICAL RESISTANCE MEMBER COMPRISING A BODY OF ELECTRICALLY INSULATING MATERIAL CONSISTING OF A TUBULAR CENTRAL PORTION HAVING AN ANNULAR COLLAR CENTRAL THEREON AND AT LEAST ONE BOSS PROTRUDING FROM EACH PLANE SURFACE OF THE COLLAR, A PAIR OF METAL WASHERS FITTING OVER THE TUBE, AND SEATING ON OPPOSITE SIDES OF THE COLLAR WITH THEIR OUTER FACES FLUSH WITH THE ENDS OF THE TUBE, EACH WASHER BEING PROVIDED WITH A HOLE ENCIRCLING EACH BOSS AND ELECTRICAL RESISTOR MEANS EMBEDDED IN THE COLLAR AND ELECTRICALLY INTERCONNECTING THE WASHERS.
References Cited (Backward Citations)
US757687A
Cited
US901809A
Cited
US841232A
Cited
DE621746C
Cited
FR749636A
Cited
US2375178A
Cited
US2486871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |