US3250322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosive fluid heat exchanger
Assignee: Texas Instruments Inc
•
Filing: 1964-02-07
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Granted: 1966-05-10
•
Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr James W Mccrary
- 👤 Iii Robert C Post
- 👤 John J Aylwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
F; F28; F28F; F28F7/00; F28F7/02; C; C04; C04B; C04B41/00; C04B41/80; C04B41/81; C04B41/85; C04B41/87; F28F21/00; F28F21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A HEAT EXCHANGER ELEMENT FOR TRANSFERRING THERMAL ENERGY BETWEEN AT LEAST ONE CORROSIVE FLUID AND ANOTHER FLUID COMPRISING: A THERMALLY CONDUCTIVE BODY HAVING A FLUID PASSAGEWAY EXTENDING THERETHROUGH, THE WALLS OF THE FLUID PASSAGEWAY BEING COATED BY DENSE, ESSENTIALLY FLUIDIMPREVIOUS SILICON CARBIDE.
Claim 2
Dependent Claim
42 words
A HEAT EXCHANGER ELEMENT FOR TRANSFERRING THERMAL ENERGY BETWEEN AT LEAST ONE CORROSIVE FLUID AND ANOTHER FLUID COMPRISING: A THERMALLY CONDUCTIVE BODY HAVING A FLUID PASSAGEWAY EXTENDING THERETHROUGH, THE WALLS OF THE FLUID PASSAGEWAY BEING COATED BY DENSE, ESSENTIALLY FLUIDIMPREVIOUS SILICON CARBIDE.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |