US3152453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for solidifying liquids
Assignee: Pennwalt Corp
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Filing: 1961-07-18
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Granted: 1964-10-13
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Expires: 1981-07-18
Abstract
No abstract record available.
Inventors
- 👤 William H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:44
CPC Classifications
F; F25; F25C; F25C1/00; F25C1/12; F25C1/14; F25C1/142; A; A23; A23G; A23G3/00; A23G3/02; A23G3/0236; A23G3/0252; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A METHOD OF SOLIDIFYING LIQUIDS COMPRISING THE STEPS OF MOVING A SUPPORT SURFACE, COOLING SAID SURFACE, FEEDING LIQUID DROP BY DROP ON SAID SURFACE, CAUSING EACH DROP TO CONTACT BOTH ITS FEEDING MEANS AND SAID SURFACE BEFORE SEPARATING FROM ITS FEEDING MEANS, FREEZING SAID DROPS INTO DISCRETE PARTICLES OF UNIFORM SIZE AND SHAPE WHILE SAID PARTICLES ARE SUPPORTED BY SAID SURFACE, AND SEPARATING SAID PARTICLES FROM SAID SURFACE.
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |