US2700720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermistor
Assignee: Individual
•
Filing: 1948-12-15
•
Granted: 1955-01-25
•
Expires: 1968-12-15
Abstract
No abstract record available.
Inventors
- 👤 Julius J Torok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:31
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2453; H; H01; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49087; Y10T29/49098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A THERMISTOR-ELEMENT COMPRISING A PIECE OF SINTERED COMPOSITION-MATERIAL CONSISTING MAINLY OF SINTERED CHROMIC OXIDE, WITH A METAL-OXIDE ADDED INGREDIENT MIXED THEREWITH, SAID ADDED INGREDIENT BEING SELECTED FROM THE GROUP CONSISTING OF (A) NOT MORE THAN ABOUT 8% OF A SINTERED OXIDE OF BARIUM, (B) NOT MORE THAN ABOUT 14% OF A SINTERED OXIDE OF COBALT, (C) NOT MORE THAN ABOUT 32% OF A SINTERED OXIDE OF IRON, (D) NOT MORE THAN ABOUT 7% OF A SINTERED OXIDE OF NICKEL, (E) NOT MORE THAN 50% OF A SINTERED OXIDE OF THORIUM, (F) NOT
Claim 2
Dependent Claim
92 words
A THERMISTOR-ELEMENT COMPRISING A PIECE OF SINTERED COMPOSITION-MATERIAL CONSISTING MAINLY OF SINTERED CHROMIC OXIDE, WITH A METAL-OXIDE ADDED INGREDIENT MIXED THEREWITH, SAID ADDED INGREDIENT BEING SELECTED FROM THE GROUP CONSISTING OF (A) NOT MORE THAN ABOUT 8% OF A SINTERED OXIDE OF BARIUM, (B) NOT MORE THAN ABOUT 14% OF A SINTERED OXIDE OF COBALT, (C) NOT MORE THAN ABOUT 32% OF A SINTERED OXIDE OF IRON, (D) NOT MORE THAN ABOUT 7% OF A SINTERED OXIDE OF NICKEL, (E) NOT MORE THAN 50% OF A SINTERED OXIDE OF THORIUM, (F) NOT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |