US3231522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermistor
Assignee: American Radiator and Standard Sanitary Corp
•
Filing: 1963-09-26
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Granted: 1966-01-25
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 William E Blodgett
- 👤 Paul I Keeling
- 👤 John M Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:57
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/4684; H; H01; H01C; H01C7/00; H01C7/02; H01C7/022; H01C7/023; H01C7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A THERMISTOR COMPOSITION CONSISTING ESSENTIALLY OF A FIRED BODY FORMED FROM A MIXTURE OF 0.998 MOLE PERCENT OF BARIUM OXIDE, 1.003 MOLE PERCENT OF TITANIUM DIOXIDE AND 0.002 MOLE PERCENT OF PRASEODYMIUM OXIDE.
Claim 2
Dependent Claim
33 words
A THERMISTOR COMPOSITION CONSISTING ESSENTIALLY OF A FIRED BODY FORMED FROM A MIXTURE OF 0.998 MOLE PERCENT OF BARIUM OXIDE, 1.003 MOLE PERCENT OF TITANIUM DIOXIDE AND 0.002 MOLE PERCENT OF PRASEODYMIUM OXIDE.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |