US2511216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making electrical resistors
Assignee: RCA Corp
•
Filing: 1946-08-01
•
Granted: 1950-06-13
•
Expires: 1966-08-01
Abstract
No abstract record available.
Inventors
- 👤 William A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:51
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043; Y; Y10; Y10S; Y10S264/00; Y10S264/25; Y10S264/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE METHOD OF PRODUCING AN ELECTRICAL RESISTANCE COMPRISING THE STEPS OF COMPRESSING A QUANTITY OF PURE TITANIUM DIOXIDE IN A PELLET, FIRING SAID PELLET IN A VACUUM FURNACE AT 1300*C. AND THEN FIRING SAID PELLET IN AN ATMOSPHERE CONTAINING AN INERT GAS OF THE GROUP CONSISTING OF HELIUM, NEON AND ARGON.
Claim 2
Independent Claim
51 words
THE METHOD OF PRODUCING AN ELECTRICAL RESISTANCE COMPRISING THE STEPS OF COMPRESSING A QUANTITY OF PURE TITANIUM DIOXIDE IN A PELLET, FIRING SAID PELLET IN A VACUUM FURNACE AT 1300*C. AND THEN FIRING SAID PELLET IN AN ATMOSPHERE CONTAINING AN INERT GAS OF THE GROUP CONSISTING OF HELIUM, NEON AND ARGON.
References Cited (Backward Citations)
US648518A
Cited
US1774607A
Cited
US1947692A
Cited
US2140228A
Cited
US2330950A
Cited
US2289211A
Cited
US2371660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |