US3212572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate type heat exchanger
Assignee: United Aircraft Products Inc
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Filing: 1961-06-21
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Granted: 1965-10-19
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Howard R Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/20; F; F28; F28D; F28D9/00; F28D9/0031; F28D9/0037; F28F; F28F3/00; F28F3/02; F28F3/025; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/373; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
FOR USE IN A PLATE TYPE HEAT EXCHANGER, A PLATE HAVING A RECESSED AREA ON ONE SIDE DEFINING MARGINAL LANDS ALONG OPPOSING SIDE EDGES OF THE PLATE ON SAID ONE SIDE THEREOF, THE ENDS OF SAID PLATE BEING TURNED OVER AT RIGHT ANGLES TO SAID PLATE TO EXTEND THROUGH AND BEYOND THE PLANE OF THE OPPOSITE SIDE OF THE PLATE, SAID RECESSED AREA OPENING THROUGH THE TURNED OVER EDGES OF THE PLATE IN
Claim 2
Dependent Claim
73 words
FOR USE IN A PLATE TYPE HEAT EXCHANGER, A PLATE HAVING A RECESSED AREA ON ONE SIDE DEFINING MARGINAL LANDS ALONG OPPOSING SIDE EDGES OF THE PLATE ON SAID ONE SIDE THEREOF, THE ENDS OF SAID PLATE BEING TURNED OVER AT RIGHT ANGLES TO SAID PLATE TO EXTEND THROUGH AND BEYOND THE PLANE OF THE OPPOSITE SIDE OF THE PLATE, SAID RECESSED AREA OPENING THROUGH THE TURNED OVER EDGES OF THE PLATE IN
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |