Patent US2349338A successfully refreshed from Google Patents.
US2349338A
Expired / Lapsed
US
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Noncorrosive heat-transfer liquid
Assignee: Carbide and Carbon Chemicals Corp
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Filing: 1940-06-08
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Granted: 1944-05-23
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Expires: 1960-06-08
Abstract
No abstract record available.
Inventors
- 👤 Leo J Clapsadle
- 👤 Gordon B Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:14
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/20; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-23 | 1947-11-22 | 1948-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-23 | 1951-11-22 | 1952-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-23 | 1955-11-22 | 1956-05-23 | $7700.00 | Window Closed / Lapsed |