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US2469729A
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Heat exchange method for the dropwise condensation of vapors
Assignee: Atlantic Richfield Co
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Filing: 1945-12-28
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Granted: 1949-05-10
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Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 James B Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:01
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0003; F; F28; F28F; F28F13/00; F28F13/04; Y; Y10; Y10S; Y10S165/00; Y10S165/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |