Patent US3294261A successfully refreshed from Google Patents.
US3294261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous drive feed for oxidationdiffusion furnace
Assignee: Individual
•
Filing: 1965-06-30
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Granted: 1966-12-27
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Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph A Cloutier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/0084; F27D2003/0034; F27D2003/0067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
IN COMBINATION WITH A CONTINUOUS OXIDATION-DIFFUSION FURNACE, WITH A CHANNEL THEREIN FOR RECEIVING QUARTZ CARRIERS FOR SEMICONDUCTOR WAFERS, WHEREBY THE SEMICONDUCTOR WAFERS MAY BE PROCESSED IN SAID FURNACE; A CONTINUOUS
Claim 2
Dependent Claim
30 words
IN COMBINATION WITH A CONTINUOUS OXIDATION-DIFFUSION FURNACE, WITH A CHANNEL THEREIN FOR RECEIVING QUARTZ CARRIERS FOR SEMICONDUCTOR WAFERS, WHEREBY THE SEMICONDUCTOR WAFERS MAY BE PROCESSED IN SAID FURNACE; A CONTINUOUS
References Cited (Backward Citations)
US3202406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |