US2846324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory and method
Assignee: Armco Inc
•
Filing: 1954-05-14
•
Granted: 1958-08-05
•
Expires: 1974-05-14
Abstract
No abstract record available.
Inventors
- 👤 Walter R Satterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/66; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206; C04B2235/3217; C04B2235/38; C04B2235/3817; C04B2235/3826; C04B2235/42; C04B2235/428; C04B2235/48; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5427; C04B2235/5436; C04B2235/5463; C04B2235/5472; C04B2235/70; C04B2235/74; C04B2235/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
COMPOSITION FOR THE PRODUCTION OF HIGHLY REFRACTORY CERAMIC WELD METAL RETAINING PRODUCTS CONSISTING ESSENTIALLY OF ALUMINUM OXIDE, MAGNESIUM OXIDE, SILICON DIOXIDE, SILICON CARBIDE AND RESIN IN INTIMATE ADMIXTURE IN THE PROPORTIONS BY WEIGHT OF AT LEAST 60% ALUMINUM OXIDE, ABOUT 6% TO 30% MAGNESIUM OXIDE, ABOUT 1% TO 30% SILICON DIOXIDE, UP TO ABOUT 15% SILICON CARBIDE, AND ABOUT 2% TO 15% RESIN SELECTED FROM THE GROUP CONSISTING OF PHENOL-FORMALDEHYDE, UREA-FORMALDEHYDE. MELAMINE-FORMALDEHYDE, POLYOXY ETHYLENE ESTERS, AND POLYOXY PROPYLENE ESTERS.
Claim 2
Dependent Claim
79 words
COMPOSITION FOR THE PRODUCTION OF HIGHLY REFRACTORY CERAMIC WELD METAL RETAINING PRODUCTS CONSISTING ESSENTIALLY OF ALUMINUM OXIDE, MAGNESIUM OXIDE, SILICON DIOXIDE, SILICON CARBIDE AND RESIN IN INTIMATE ADMIXTURE IN THE PROPORTIONS BY WEIGHT OF AT LEAST 60% ALUMINUM OXIDE, ABOUT 6% TO 30% MAGNESIUM OXIDE, ABOUT 1% TO 30% SILICON DIOXIDE, UP TO ABOUT 15% SILICON CARBIDE, AND ABOUT 2% TO 15% RESIN SELECTED FROM THE GROUP CONSISTING OF PHENOL-FORMALDEHYDE, UREA-FORMALDEHYDE. MELAMINE-FORMALDEHYDE, POLYOXY ETHYLENE ESTERS, AND POLYOXY PROPYLENE ESTERS.
References Cited (Backward Citations)
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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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |