US2989421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas plating of inert compounds on quartz crucibles
Assignee: Union Carbide Corp
•
Filing: 1957-06-18
•
Granted: 1961-06-20
•
Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Leo J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:06
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5025; C04B41/5031; C04B41/80; C04B41/81; C04B41/85; C04B41/87
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR GAS PLATING ALUMINA ON A REFRACTORY SILICA SUBSTRATE MATERIAL, SAID PROCESS CONSISTING OF HEATING THE SUBSTRATE TO BE PLATED WITH ALUMINA TO A TEMPERATURE OF 1200*F. WHICH THERMALLY DECOMPOSES A HEAT-DECOMPOSABLE GASEOUS ORGANO COMPOUND OF ALUMINUM BROUGHT IN CONTACT THEREWITH, AND CONTACTING THE THUS HEATED SILICA SUBSTRATE MATERIAL WITH SAID GASEOUS COMPOUND OF
Claim 2
Dependent Claim
56 words
A PROCESS FOR GAS PLATING ALUMINA ON A REFRACTORY SILICA SUBSTRATE MATERIAL, SAID PROCESS CONSISTING OF HEATING THE SUBSTRATE TO BE PLATED WITH ALUMINA TO A TEMPERATURE OF 1200*F. WHICH THERMALLY DECOMPOSES A HEAT-DECOMPOSABLE GASEOUS ORGANO COMPOUND OF ALUMINUM BROUGHT IN CONTACT THEREWITH, AND CONTACTING THE THUS HEATED SILICA SUBSTRATE MATERIAL WITH SAID GASEOUS COMPOUND OF
References Cited (Backward Citations)
US2612442A
Cited
US2619433A
Cited
US2694377A
Cited
US2772654A
Cited
US2784115A
Cited
US2831780A
Cited
US2824828A
Cited
US2847320A
Cited
US2972555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |