US2836500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic composition
Assignee: EIDP Inc
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Filing: 1955-03-17
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Granted: 1958-05-27
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Expires: 1975-03-17
Abstract
No abstract record available.
Inventors
- 👤 Weidman Verne Wesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:03
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A MIXTURE COMPOSED ESSENTIALLY OF 4% TO 50% BY WEIGHT OF A SUBSTANCE FROM THE GROUP CONSISTING OF NAF:B2O3 AND NAF:B2O3 5H2O IN WHICH THE MOLE RATIO OF NAF TO B2O3 VARIES BETWEEN 4:4.68 AND 4:5.80, AND 50% TO 96% BY WEIGHT OF A FINELY DIVIDED HEAT CONDUCTIVE REFRACTORY MATERIAL, WITH SUFFICIENT ADDED WATER TO INDUCE IN THE MIXTURE THE DESIRED PLASTICITY.
Claim 2
Dependent Claim
62 words
A MIXTURE COMPOSED ESSENTIALLY OF 4% TO 50% BY WEIGHT OF A SUBSTANCE FROM THE GROUP CONSISTING OF NAF:B2O3 AND NAF:B2O3 5H2O IN WHICH THE MOLE RATIO OF NAF TO B2O3 VARIES BETWEEN 4:4.68 AND 4:5.80, AND 50% TO 96% BY WEIGHT OF A FINELY DIVIDED HEAT CONDUCTIVE REFRACTORY MATERIAL, WITH SUFFICIENT ADDED WATER TO INDUCE IN THE MIXTURE THE DESIRED PLASTICITY.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |