US2623814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of crystalline materials
Assignee: Phillips Petroleum Co
•
Filing: 1949-08-26
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Granted: 1952-12-30
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Expires: 1969-08-26
Abstract
No abstract record available.
Inventors
- 👤 Gray Worth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:03
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN IMPROVED PROCESS FOR THE MANUFACTURE OF CRYSTALLINE MATERIAL BY EVAPORATIVE CRYSTALLIZATION WHICH COMPRISES EVAPORATING A SOLUTION CONTAINING CRYSTALLIZABLE MATERIAL TO SUPERSATURATION, PASSING THUS PREPARED SUPERSATURATED SOLUTION TO A CRYSTALLIZATION ZONE THROUGH A BAROMETRIC LEG CONECTING SAID EVAPORATING AND SAID CRYSTALLIZATION ZONE, SID SUPERSATURATED SOLUTION BEING CONTACTED IN SAID CRYSTALLIZEATION ZONE WITH PREVIOUSLY FORMED CRYSTALS THUS RELIEVING SUPERSATURATION THEREOF AND CAUSING SAID CRYSTALS TO GROW, REMOVING CRYSTALS FROM SAD CRYSTALLIZATION ZONE AS A CRYSTAL MAGMA, AND PASSING A POR-
Claim 2
Dependent Claim
79 words
AN IMPROVED PROCESS FOR THE MANUFACTURE OF CRYSTALLINE MATERIAL BY EVAPORATIVE CRYSTALLIZATION WHICH COMPRISES EVAPORATING A SOLUTION CONTAINING CRYSTALLIZABLE MATERIAL TO SUPERSATURATION, PASSING THUS PREPARED SUPERSATURATED SOLUTION TO A CRYSTALLIZATION ZONE THROUGH A BAROMETRIC LEG CONECTING SAID EVAPORATING AND SAID CRYSTALLIZATION ZONE, SID SUPERSATURATED SOLUTION BEING CONTACTED IN SAID CRYSTALLIZEATION ZONE WITH PREVIOUSLY FORMED CRYSTALS THUS RELIEVING SUPERSATURATION THEREOF AND CAUSING SAID CRYSTALS TO GROW, REMOVING CRYSTALS FROM SAD CRYSTALLIZATION ZONE AS A CRYSTAL MAGMA, AND PASSING A POR-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |