Patent US3372744A successfully refreshed from Google Patents.
US3372744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate type heat exchanger
Assignee: Alfa Laval AB
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Filing: 1965-05-11
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Granted: 1968-03-12
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Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 Skoog Malte Anker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:47
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A HEAT EXCHANGE EFFECTED BY FLOWING A FIRST MEDIUM IN A PLURALITY OF FIRST PARALLEL LAYERS AND FLOWING A SECOND MEDIUM IN A PLURALITY OF SECOND LAYERS PARALLEL TO AND ALTERNATING WITH SAID FIRST LAYERS, SAID LAYERS BEING SUBSTANTIALLY COEXTENSIVE IN AREA AND EACH LAYER BEING SEPARATED FROM BUT IN HEAT EXCHANGE RELATION TO EACH ADJACENT LAYER OVER SUBSTANTIALLY ITS ENTIRE AREA, AND DIRECTING THE LAYERS OF EACH MEDIUM TO A SEPARATE OUTLET FOR SUCH MEDIUM, THE METHOD OF CONTROLLING THE OUTLET TEM-
Claim 2
Dependent Claim
84 words
IN A HEAT EXCHANGE EFFECTED BY FLOWING A FIRST MEDIUM IN A PLURALITY OF FIRST PARALLEL LAYERS AND FLOWING A SECOND MEDIUM IN A PLURALITY OF SECOND LAYERS PARALLEL TO AND ALTERNATING WITH SAID FIRST LAYERS, SAID LAYERS BEING SUBSTANTIALLY COEXTENSIVE IN AREA AND EACH LAYER BEING SEPARATED FROM BUT IN HEAT EXCHANGE RELATION TO EACH ADJACENT LAYER OVER SUBSTANTIALLY ITS ENTIRE AREA, AND DIRECTING THE LAYERS OF EACH MEDIUM TO A SEPARATE OUTLET FOR SUCH MEDIUM, THE METHOD OF CONTROLLING THE OUTLET TEM-
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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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |