US3289753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of gold surfaces to promote dropwise condensation
Assignee: Individual
•
Filing: 1964-11-02
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Granted: 1966-12-06
•
Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Robert A Erb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/04; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10S428/937; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/12903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A HEAT TRANSFER DEVICE COMPRISING A LIQUID ZONE, A WATER VAPOR ZONE HAVING A TEMPERATURE GREATER THAN THAT OF SAID LIQUID ZONE, MEANS TO CONDUCT WATER VAPOR TO SAID WATER VAPOR ZONE, AND AN IMPERMEABLE PARTITION DISPOSED BETWEEN SAID ZONES, WHEREBY MASS TRANSFER BETWEEN SAID ZONES IS PREVENTED, SAID PARTITION HAVING A FIRST SURFACE IN CONTACT WITH SAID LIQUID ZONE AND A SECOND SURFACE IN
Claim 2
Dependent Claim
66 words
IN A HEAT TRANSFER DEVICE COMPRISING A LIQUID ZONE, A WATER VAPOR ZONE HAVING A TEMPERATURE GREATER THAN THAT OF SAID LIQUID ZONE, MEANS TO CONDUCT WATER VAPOR TO SAID WATER VAPOR ZONE, AND AN IMPERMEABLE PARTITION DISPOSED BETWEEN SAID ZONES, WHEREBY MASS TRANSFER BETWEEN SAID ZONES IS PREVENTED, SAID PARTITION HAVING A FIRST SURFACE IN CONTACT WITH SAID LIQUID ZONE AND A SECOND SURFACE IN
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |