US3587730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange system with porous boiling layer
Assignee: Union Carbide Corp
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Filing: 1970-06-15
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Granted: 1971-06-28
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Expires: 1990-06-15
Abstract
Abstract A TUBE-TYPE HEAT EXCHANGER HAVING A POROUS LAYER BONDED TO ONE WALL AND CONSTRUCTED OF THERMALLY CONDUCTIVE PARTICLES INTERGRALLY BONDED TOGETHER TO FORM INTERCONNECTED PORES OF CAPILLARY SIZE.
Inventors
- 👤 Robert M Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:46
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/18; F28F13/185; F28F13/187; F25; F25J; F25J5/00; F25J5/002; F25J5/005; F25J2250/00; F25J2250/02; F25J2250/04; F25J2290/00; F25J2290/44; F28D; F28D21/00; F28D2021/0019; F28D2021/0033; F28F2255/00; F28F2255/18; Y; Y10; Y10S; Y10S159/00; Y10S159/28; Y10S165/00; Y10S165/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |