Patent US2992131A successfully refreshed from Google Patents.
US2992131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of metal surfaces
Assignee: Jenolite Ltd
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Filing: 1958-03-11
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Granted: 1961-07-11
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Expires: 1978-03-11
Abstract
No abstract record available.
Inventors
- 👤 Bricknell Frank Stubbs
- 👤 Cork Harry Augustus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:12
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; E; E04; E04C; E04C5/00; E04C5/01; E04C5/015; E04C5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE METHOD OF MAKING A STRUCTURAL ARTICLE COMPOSED OF FERROUS METAL ENCASED AT LEAST PARTIALLY IN CONCRETETYPE CEMENTITIOUS MATERIAL WHICH COMPRISES REMOVING SCALE AND OXIDE FROM THE FERROUS METAL OF SUCH ARTICLE, DEPOSITING A WATER-INSOLUBLE NON-CONDUCTIVE COATING OF A HEAVY METAL PHOSPHATE ON THE THUS-TREATED FERROUS METAL, COVERING THE PHOSPHATE-COATED FERROUS METAL WITH A NONSAPONIFIABLE ORGANIC FILM-FORMING COMPOSITION AND THEN APPLYING THERETO AT LEAST PARTIALLY A CONCRETE-TYPE CEMENTITIOUS CASING TO PRODUCE A STRUCTURAL ARTICLE IN WHICH THERE IS A HIGH BOND STRENGTH BETWEEN SAID COMPOSITION AND SAID PHOSPHATED FERROUS METAL AND BETWEEN SAID COMPOSITION AND SAID CASING AND IN WHICH THE COMPOSITION IS RESISTANT TO ATTACK FROM CEMENTITIOUS CASING IN CONTACT THEREWITH.
Claim 2
Independent Claim
112 words
THE METHOD OF MAKING A STRUCTURAL ARTICLE COMPOSED OF FERROUS METAL ENCASED AT LEAST PARTIALLY IN CONCRETETYPE CEMENTITIOUS MATERIAL WHICH COMPRISES REMOVING SCALE AND OXIDE FROM THE FERROUS METAL OF SUCH ARTICLE, DEPOSITING A WATER-INSOLUBLE NON-CONDUCTIVE COATING OF A HEAVY METAL PHOSPHATE ON THE THUS-TREATED FERROUS METAL, COVERING THE PHOSPHATE-COATED FERROUS METAL WITH A NONSAPONIFIABLE ORGANIC FILM-FORMING COMPOSITION AND THEN APPLYING THERETO AT LEAST PARTIALLY A CONCRETE-TYPE CEMENTITIOUS CASING TO PRODUCE A STRUCTURAL ARTICLE IN WHICH THERE IS A HIGH BOND STRENGTH BETWEEN SAID COMPOSITION AND SAID PHOSPHATED FERROUS METAL AND BETWEEN SAID COMPOSITION AND SAID CASING AND IN WHICH THE COMPOSITION IS RESISTANT TO ATTACK FROM CEMENTITIOUS CASING IN CONTACT THEREWITH.
References Cited (Backward Citations)
US2611945A
Cited
US2700622A
Cited
US2725310A
Cited
US2832706A
Cited
US2887404A
Cited
US2774701A
Cited
US2930106A
Cited
US2854370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |