US3130137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of selenium rectifier cell
Assignee: NEC Corp
•
Filing: 1960-09-27
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Granted: 1964-04-21
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Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Araki Tsuneo
- 👤 Imai Shuzaburo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:23
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/042; C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE METHOD OF MANUFACTURING A BASE PLATE FOR A SELENIUM RECTIFIER CELL COMPRISING THE STEPS OF ELECTROPLATING A METAL BASE PLATE IN AN AQUEOUS SOLUTION OF SIGNIFICANT AMOUNTS OF A NICKEL SALT AND SELENIUM OXIDE WITH THE BASE PLATE FORMING THE CATHODE WHEREBY A NICKEL SELENIDE LAYER IS FORMED ON SAID PLATE.
Claim 2
Independent Claim
52 words
THE METHOD OF MANUFACTURING A BASE PLATE FOR A SELENIUM RECTIFIER CELL COMPRISING THE STEPS OF ELECTROPLATING A METAL BASE PLATE IN AN AQUEOUS SOLUTION OF SIGNIFICANT AMOUNTS OF A NICKEL SALT AND SELENIUM OXIDE WITH THE BASE PLATE FORMING THE CATHODE WHEREBY A NICKEL SELENIDE LAYER IS FORMED ON SAID PLATE.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |