US2851405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanate rectifiers
Assignee: GTE Sylvania Inc
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Filing: 1953-07-03
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Granted: 1958-09-09
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Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Dymon
- 👤 Edward B Saubestre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:21
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/26; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A PROCESS FOR THE MANUFACTURE OF RECTIFIERS INCLUDING THE STEPS OF FORMING A BODY OF TITANATES OF THE ALKALINE EARTH METALS, PARTIALLY REDUCING SAID BODY THE ANODE IN AN BODY SEMICONDUCTIVE, MAKING SAID BODY THE ANODE IN AN ELECTROLYTE CONTAINING A CATHODE AND A METALLIC SALT CAPABLE OF PRODUCING A METALLIC OXIDE, APPLYING A CURRENT TO SAID ANODE AND INCREASING SAID CURRENT UNTIL A SHARP RISE OCCURS IN THE VOLTAGE BETWEEN SAID ANODE AND CATHODE, THEREAFTER OPERATING AT THE INCREASED CURRENT AND THE CORRESPONDING VOLTAGE FOR A PERIOD SUFFICIENT TO CONDITION SAID SURFACE TO RECEIVE A LAYER OF SAID METALLIC OXIDE, REDUCING THE VOLTATE AND THE CORRESPONDING CURRENT BETWEEN SAID ANODE AND CATHODE TO ESTABLISH OPERATING VALUES FOR PLATING A LAYER OF SAID METALLIC OXIDE ONTO SAID SURFACE, AND OPERATING AT THE REDUCED VOLTAGE AND THE CORRESPONDING CURRENT FOR A PERIOD SUFFICIENT TO PLATE A LAYER OF SAID METALLIC OXIDE OF A PRESCRIBED THICKNESS ONTO SAID SURFACE.
Claim 2
Dependent Claim
157 words
A PROCESS FOR THE MANUFACTURE OF RECTIFIERS INCLUDING THE STEPS OF FORMING A BODY OF TITANATES OF THE ALKALINE EARTH METALS, PARTIALLY REDUCING SAID BODY THE ANODE IN AN BODY SEMICONDUCTIVE, MAKING SAID BODY THE ANODE IN AN ELECTROLYTE CONTAINING A CATHODE AND A METALLIC SALT CAPABLE OF PRODUCING A METALLIC OXIDE, APPLYING A CURRENT TO SAID ANODE AND INCREASING SAID CURRENT UNTIL A SHARP RISE OCCURS IN THE VOLTAGE BETWEEN SAID ANODE AND CATHODE, THEREAFTER OPERATING AT THE INCREASED CURRENT AND THE CORRESPONDING VOLTAGE FOR A PERIOD SUFFICIENT TO CONDITION SAID SURFACE TO RECEIVE A LAYER OF SAID METALLIC OXIDE, REDUCING THE VOLTATE AND THE CORRESPONDING CURRENT BETWEEN SAID ANODE AND CATHODE TO ESTABLISH OPERATING VALUES FOR PLATING A LAYER OF SAID METALLIC OXIDE ONTO SAID SURFACE, AND OPERATING AT THE REDUCED VOLTAGE AND THE CORRESPONDING CURRENT FOR A PERIOD SUFFICIENT TO PLATE A LAYER OF SAID METALLIC OXIDE OF A PRESCRIBED THICKNESS ONTO SAID SURFACE.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |