Patent US3250322A successfully refreshed from Google Patents.
US3250322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosive fluid heat exchanger
Assignee: Texas Instruments Inc
•
Filing: 1964-02-07
•
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 13:01
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.
References Cited (Backward Citations)
GB285151A
Cited
US2479540A
Cited
US2611585A
Cited
US2726072A
Cited
US2650801A
Cited
US2721730A
Cited
FR1078019A
Cited
US2821369A
Cited
US2849860A
Cited
GB901176A
Cited
US2941962A
Cited
US2914424A
Cited
GB866813A
Cited
US3100688A
Cited
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 |