Patent US2515672A successfully refreshed from Google Patents.
US2515672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer
Assignee: Individual
•
Filing: 1945-07-25
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Granted: 1950-07-18
•
Expires: 1965-07-25
Abstract
No abstract record available.
Inventors
- 👤 Frank J Sowa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:02
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN A PROCESS FOR HEAT TRANSFER, THE STEPS COMPRISING HEATING A FLUID CONSISTING ESSENTIALLY OF AT LEAST ONE MONOFLUORO ALKYL SILANE IN WHICH THE SUM OF THE CARBON ATOMS IN THE ALKYL GROUPS EXCEEDS SEVEN AND BRINGING SAID HEATED FLUID INTO HEAT-EXCHANGE RELATION WITH ANOTHER MATERIAL.
Claim 2
Dependent Claim
46 words
IN A PROCESS FOR HEAT TRANSFER, THE STEPS COMPRISING HEATING A FLUID CONSISTING ESSENTIALLY OF AT LEAST ONE MONOFLUORO ALKYL SILANE IN WHICH THE SUM OF THE CARBON ATOMS IN THE ALKYL GROUPS EXCEEDS SEVEN AND BRINGING SAID HEATED FLUID INTO HEAT-EXCHANGE RELATION WITH ANOTHER MATERIAL.
References Cited (Backward Citations)
US2007007A
Cited
US2185639A
Cited
US2248494A
Cited
US2335012A
Cited
US2384384A
Cited
US2397727A
Cited
US2413513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |