US3168455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion protection
Assignee: Sinclair Research Inc
•
Filing: 1959-01-16
•
Granted: 1965-02-02
•
Expires: 1979-01-16
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Paul
- 👤 Lawrence V Collings
- 👤 Thomas O Counts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:17
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/10; C23F2213/00; C23F2213/20; C23F2213/21; C23F2213/30; C23F2213/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A CATHODIC PROTECTIN SYSTME FOR REDUCING CORROSION OF A FERROUS METAL OBJECT IN CONTACT WITH SOIL THE STEP WHICH COMPRISES PROCIDING IN THE SOIL ADJACENT TO SAID OBJECT A SMALL BUT EFFECTIVE QUANTITY OF AN ARSENATE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, MANGANESE AND THE GROUP IIA METALS TO REDUCE THE CURRENT REQUIREMENTS OF SAID CATHODIC PROTECTION SYSTEM.
Claim 2
Dependent Claim
63 words
IN A CATHODIC PROTECTIN SYSTME FOR REDUCING CORROSION OF A FERROUS METAL OBJECT IN CONTACT WITH SOIL THE STEP WHICH COMPRISES PROCIDING IN THE SOIL ADJACENT TO SAID OBJECT A SMALL BUT EFFECTIVE QUANTITY OF AN ARSENATE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, MANGANESE AND THE GROUP IIA METALS TO REDUCE THE CURRENT REQUIREMENTS OF SAID CATHODIC PROTECTION SYSTEM.
References Cited (Backward Citations)
USRE16331E
Cited
US2444174A
Cited
US2428526A
Cited
US2678291A
Cited
US2601214A
Cited
US2839462A
Cited
US2979377A
Cited
US3001919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |