US2963349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of measuring corrosion rates
Assignee: Pure Oil Co
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Filing: 1957-12-23
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Granted: 1960-12-06
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
- 👤 Orrin C Holbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:58
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF DETERMINING THE RATE OF CORROSION OF A METALLIC TEST SPECIMEN IN CONTACT WITH A CORROSIVE ATOMSPHERE WHICH COMPRISES MAINTAINING A BODY OF COLORED DYE CAPABLE OF ABSORPTION BY CORROSION PRODUCTS OF THE TEST SPECIMEN, BUT NOT CAPABLE OF SUBSTANTIAL ABSORPTION BY SAID TEST SPECIMEN WHEN UNCORRODED, IN CONTACT WITH SAID TEST SPECIMEN AND DETERMINING THE CHANGE IN DYE CONCENCENTRATION WITH THE PASSAGE OF TIME.
Claim 2
Independent Claim
67 words
THE METHOD OF DETERMINING THE RATE OF CORROSION OF A METALLIC TEST SPECIMEN IN CONTACT WITH A CORROSIVE ATOMSPHERE WHICH COMPRISES MAINTAINING A BODY OF COLORED DYE CAPABLE OF ABSORPTION BY CORROSION PRODUCTS OF THE TEST SPECIMEN, BUT NOT CAPABLE OF SUBSTANTIAL ABSORPTION BY SAID TEST SPECIMEN WHEN UNCORRODED, IN CONTACT WITH SAID TEST SPECIMEN AND DETERMINING THE CHANGE IN DYE CONCENCENTRATION WITH THE PASSAGE OF TIME.
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |