Patent US3170303A successfully refreshed from Google Patents.
US3170303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sublimator
Assignee: RTX Corp
•
Filing: 1963-08-20
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Granted: 1965-02-23
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Expires: 1983-08-20
Abstract
No abstract record available.
Inventors
- 👤 George C Rannenberg
- 👤 John S Lovell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:18
CPC Classifications
F; F25; F25B; F25B19/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
THE PROCESS OF COOLING A FLUID OR SURFACE COMPRISING THE STEPS OF CONDUCTING A REFRIGERANT HAVING A TRIPLE POINT TO A POROUS PLATE HAVING A PORE SIZE IN THE ORDER OF 1/2 MICRON PERVIOUS TO SAID REFRIGERANT, PASSING THE REFRIGERANT THROUGH SAID POROUS PLATE, SUBJECTING SAID REFRIGERANT TO A PRESSURE AT OR BELOW THE TRIPLE POINT OF SAID REFRIG-
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |