US3587732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger formed by modules
Assignee: Olin Corp
•
Filing: 1969-08-14
•
Granted: 1971-06-28
•
Expires: 1989-08-14
Abstract
Abstract A HEAT EXCHANGER IS FORMED OF HEAT EXCHANGER UNITS WHICH EACH HAVE A SECTION OF THE HEADER AND A POROUS MATERIAL WITH A MULTIPLICITY OF TUBES EMBEDDED THEREIN WITH THE TUBES COMMUNICATING WITH THE HEADER SECTION. THE UNITS ARE ASSEMBLED AND JOINED TOGETHER TO FORM HEADERS.
Inventors
- 👤 Frederick A Burne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:30
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/003; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1669; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/402; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |