US2500205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of plating
Assignee: Cleveland Graphite Bronze Co
•
Filing: 1945-04-12
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Granted: 1950-03-14
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Expires: 1965-04-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:27
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/06; C25D7/00; C25D7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A METHOD OF ELECTROPLATING A UNIFORM LAYER OF METAL OF APPROXIMATELY .005 INCH OR LESS THICK UPON THE CONCAVE SURFACE OF A SEMI-CYLINDRICAL ARTICLE, THE STEPS WHICH CONSIST OF PLACING THE PARALLEL EDGES OF THE ARTICLE AGAINST AND WITH THE CONCAVE SIDE FACING, AN INSULATING BARRIER ELEMENT HAVING A SLOT OPENING PARALLEL TO AND CENTRALLY LOCATED WITH RESPECT TO THE LATERAL EDGES OF THE ARTICLE AND BEING OTHERWISE IMPERVIOUS TO THE PASSAGE OF CURRENT, THE WIDTH OF SAID SLOT BEING APPROXIMATELY 25% OR LESS OF THE DIAMETER OF THE ARTICLE, IMMERSING THE ARTICLE AND BARRIER ELEMENT IN AN ELECTROPLATING BATH, MOUNTING AN ANODE IN THE BATH EXTERNAL TO THE ARTICLE AND PASSING A PLATING CURRENT FROM SAID ANODE TO SAID ARTICLE AS A CATHODE THROUGH SAID SLOT.
Claim 2
Dependent Claim
128 words
IN A METHOD OF ELECTROPLATING A UNIFORM LAYER OF METAL OF APPROXIMATELY .005 INCH OR LESS THICK UPON THE CONCAVE SURFACE OF A SEMI-CYLINDRICAL ARTICLE, THE STEPS WHICH CONSIST OF PLACING THE PARALLEL EDGES OF THE ARTICLE AGAINST AND WITH THE CONCAVE SIDE FACING, AN INSULATING BARRIER ELEMENT HAVING A SLOT OPENING PARALLEL TO AND CENTRALLY LOCATED WITH RESPECT TO THE LATERAL EDGES OF THE ARTICLE AND BEING OTHERWISE IMPERVIOUS TO THE PASSAGE OF CURRENT, THE WIDTH OF SAID SLOT BEING APPROXIMATELY 25% OR LESS OF THE DIAMETER OF THE ARTICLE, IMMERSING THE ARTICLE AND BARRIER ELEMENT IN AN ELECTROPLATING BATH, MOUNTING AN ANODE IN THE BATH EXTERNAL TO THE ARTICLE AND PASSING A PLATING CURRENT FROM SAID ANODE TO SAID ARTICLE AS A CATHODE THROUGH SAID SLOT.
References Cited (Backward Citations)
GB189600986A
Cited
US1603951A
Cited
US1587303A
Cited
GB255736A
Cited
US1765320A
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US1872221A
Cited
US1757671A
Cited
GB335161A
Cited
US2086226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |