US3193267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous gas diffusion
Assignee: BTU Engineering Corp
•
Filing: 1961-07-31
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Granted: 1965-07-06
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Beck Jacob Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:34
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/06; C30B31/10; C30B31/106; Y; Y10; Y10S; Y10S118/00; Y10S118/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A CONTINUOUS GAS DIFFUSION FURNACE COMPRISING MEANS DEFINING TWO PARALLEL ELONGATED FURNACE CHAMBERS AND A PASSAGEWAY CONNECTING SAID CHAMBERS FOR THE FULL LENGTH THEREOF, MEANS FOR HEATING SAID SECTIONS TO DIFFERENT TEMPERATURES, A PLURALITY OF HOLLOW HEATING TUBES, MEANS FOR SUPPORTING SAID PLURALITY OF HEATING TUBES IN TRANSVERSE RELATION TO SAID ELONGATED CHAMBERS, MEANS FOR TRANSPORTING SAID TUBE SUPPORTING MEANS ALONG THE FULL LENGTH OF SAID CHAMBERS WHEREBY A PORTION OF EACH OF THE
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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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |