US2979377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiological corrosion protection by germicidal zone and protective coating
Assignee: Phillips Petroleum Co
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Filing: 1956-11-07
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Granted: 1961-04-11
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Expires: 1976-11-07
Abstract
No abstract record available.
Inventors
- 👤 Donald O Hitzman
- 👤 Ralph P Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:27
CPC Classifications
C; C23; C23F; C23F15/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
A METHOD FOR PREVENTING MICROBIOLOGICAL CORROSION OF A METAL OBJECT WHICH IS TO BE AT LEAST PARTIALLY BURIED IN AN EXCAVATION IN THE EARTH, SAID CORROSION BEING DUE TO THE PRESENCE OF MICROORGANISMS IN THE SOIL FROM SAID EXCAVATION AND WHICH SOIL IS TO BE EMPLOYED AS FILL AROUND SAID OBJECT, WHICH METHOD COMPRISES: MIXING A FIRST GERMICIDE INTO A BITUMINOUS COATING MATERIAL, APPLYING A LAYER OF SAID BITUMINOUS COATING CATERIAL TO SAID METAL OBJECT TO FORM A FIRST PROTECTIVE ZONE AROUND SAID OBJECT; INCORPORATING A SECOND GERMICIDE WITH AT LEAST A PORTION OF SAID MICROOGRANISM-INFECTED SOIL IN AN AMOUNT SUFFICIENT TO EFFECTIVELY INHIBIT GROWTH OF SAID MICROORGANISMS; PLACING SAID OBJECT IN SAID EXCAVATION; AND PLACING SAID SOIL HAVING SAID GERMICIDE INCORPORATED THEREWITH INTO SAID EXCAVATION IN A MANNER SO AS TO SURROUND SAID OBJECT AND THUS ESTABLISH A SECOND ZONE OF PROTECTION AROUND SAID OBJECT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |