Patent US2697673A successfully refreshed from Google Patents.
US2697673A
Expired / Lapsed
US
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Method of cleansing metal
Assignee: Cyrus Wm Rice & Co Inc
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Filing: 1951-03-17
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Granted: 1954-12-21
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Expires: 1971-03-17
Abstract
No abstract record available.
Inventors
- 👤 James K Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:00
CPC Classifications
C; C25; C25F; C25F1/00; C25F1/02; C23; C23G; C23G1/00; C23G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE METHOD OF REMOVING AN INORGANIC COATING FROM A METALLIC SURFACE AND SIMULTANEOUSLY TESTING THE EFFECTIVENESS OF A PICKLING SOLUTION, SAID METHOD COMPRISING THE STEPS OF IMMERSING A MEMBER HAVING AT LEAST A PORTION OF ITS SURFACE BEARING A SUBSTANTIAL COATING OF THE TYPE TO BE REMOVED BY SAID PICKLING SOLUTION AND DEFINING FIRST ELECTRODE MEANS; IMMERSING SUBSTANTIALLY UNCOATED SECOND ELECTRODE MEANS INTO SAID PICKLING SOLUTION; SAID PICKLING SOLUTION ACTING AS AN ELECTROLYTE AND DEFINING WITH SAID ELECTRODE MEANS AT LEAST ONE CELL; LINKING SAID ELECTRODE MEANS SOLELY TO THEMSELVES BY CURRENT CONDUCTIVE MEANS AND A POTENTIAL MEASURING DEVICE TO DEFINE AT LEAST ONE CLOSED CIRCUIT CELL; AND MEASURING WITH RESPECT TO TIME THE DROP IN POTENTIAL AS THE COATING IS REMOVED FROM SAID FIRST ELECTRODE MEANS.
Claim 2
Independent Claim
127 words
THE METHOD OF REMOVING AN INORGANIC COATING FROM A METALLIC SURFACE AND SIMULTANEOUSLY TESTING THE EFFECTIVENESS OF A PICKLING SOLUTION, SAID METHOD COMPRISING THE STEPS OF IMMERSING A MEMBER HAVING AT LEAST A PORTION OF ITS SURFACE BEARING A SUBSTANTIAL COATING OF THE TYPE TO BE REMOVED BY SAID PICKLING SOLUTION AND DEFINING FIRST ELECTRODE MEANS; IMMERSING SUBSTANTIALLY UNCOATED SECOND ELECTRODE MEANS INTO SAID PICKLING SOLUTION; SAID PICKLING SOLUTION ACTING AS AN ELECTROLYTE AND DEFINING WITH SAID ELECTRODE MEANS AT LEAST ONE CELL; LINKING SAID ELECTRODE MEANS SOLELY TO THEMSELVES BY CURRENT CONDUCTIVE MEANS AND A POTENTIAL MEASURING DEVICE TO DEFINE AT LEAST ONE CLOSED CIRCUIT CELL; AND MEASURING WITH RESPECT TO TIME THE DROP IN POTENTIAL AS THE COATING IS REMOVED FROM SAID FIRST ELECTRODE MEANS.
References Cited (Backward Citations)
US945865A
Cited
US1811765A
Cited
US1845231A
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US2212588A
Cited
US2166583A
Cited
US2374088A
Cited
US2367811A
Cited
US2314369A
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US2621673A
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US2626620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |