US2942098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for heating materials by electron bombardment in a vacuum
Assignee: Stauffer Chemical Co
•
Filing: 1958-08-04
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Granted: 1960-06-21
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Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:39
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/22; C22B9/228; H; H01; H01J; H01J19/00; H01J19/68; H01J37/00; H01J37/02; H01J37/24; H01J37/241; H01J37/30; H01J37/305; H01J37/32; Y; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2423729A
Cited
US2771568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |