US2921871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing electrical resistance of gas plated nickel coatings and resulting article
Assignee: Union Carbide Corp
•
Filing: 1957-05-22
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Granted: 1960-01-19
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Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Orval J Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:46
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
IN A METHOD OF PREPARING ELECTRICAL RESISTANCE UNITS COMPRISING THE STEP OF DEPOSITING A THIN NICKEL COATING ON ELECTRICAL INSULATING MATERIAL, THE IMPROVEMENT WHICH COMPRISES DEPOSITING THE NICKEL FORMING THE CONDUCTIVE
Claim 2
Dependent Claim
31 words
IN A METHOD OF PREPARING ELECTRICAL RESISTANCE UNITS COMPRISING THE STEP OF DEPOSITING A THIN NICKEL COATING ON ELECTRICAL INSULATING MATERIAL, THE IMPROVEMENT WHICH COMPRISES DEPOSITING THE NICKEL FORMING THE CONDUCTIVE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |