Patent US5792055A successfully refreshed from Google Patents.
US3282804A
Expired / Lapsed
US
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Method and apparatus for analyzing metals, alloys and semiconductors
Assignee: Individual
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Filing: 1963-04-25
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Granted: 1966-11-01
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Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert F Stearn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:11
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/20; G01N33/202; G01N33/2028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD FOR MAKING ANALYTICAL EXAMINATIONS OF COMPOSITIONS OF MATTER HAVING THE CHARACTERISTIC OF METALS, ALLOYS AND SEMI-CONDUCTORS, COMPRISING APPLYING AN ALTERNATE CURRENT ACTION ACROSS TWO GALVANICALLY DISSIMILAR ELECTRODES BRIDGED BY AN ELECTROLYTE, ONE OF WHICH IS THE UNKNOWN SPECIMEN, TO PRODUCE CORROSIVE EFFECTS ON THE SKIN OF SAID SPECIMEN, AND MANIFESTING THE SAID EFFECTS GRAPHICALLY WITH AN OSCILLOSCOPE.
Claim 2
Independent Claim
59 words
A METHOD FOR MAKING ANALYTICAL EXAMINATIONS OF COMPOSITIONS OF MATTER HAVING THE CHARACTERISTIC OF METALS, ALLOYS AND SEMI-CONDUCTORS, COMPRISING APPLYING AN ALTERNATE CURRENT ACTION ACROSS TWO GALVANICALLY DISSIMILAR ELECTRODES BRIDGED BY AN ELECTROLYTE, ONE OF WHICH IS THE UNKNOWN SPECIMEN, TO PRODUCE CORROSIVE EFFECTS ON THE SKIN OF SAID SPECIMEN, AND MANIFESTING THE SAID EFFECTS GRAPHICALLY WITH AN OSCILLOSCOPE.
References Cited (Backward Citations)
US2531747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |