US3256070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desublimation using a rotating cooling drum containing particulate tumbling and grinding media
Assignee: Novartis Corp
•
Filing: 1960-10-12
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Granted: 1966-06-14
•
Expires: 1980-10-12
Abstract
No abstract record available.
Inventors
- 👤 Trickey Elwood Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:46
CPC Classifications
B; B01; B01D; B01D7/00; B01D7/02; C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
CONTINUOUS PROCESS FOR THE PREPARATION OF DESUBLIMABLE MATERIAL IN A SOLID, FINELY DIVIDED FORM WHICH COMPRISES CONTINUOUSLY PASSING SAID MATERIAL IN THE VAPOR STATE INTO A ROTATING DRUM HAVING PARTICULATE TUMBLING GRINDIG MEDIA THEREIN AT A PRESSURE AND TEMPERATURE AT WHICH DESUBLIMATION OF THE MATERIAL OCCURS SO AS TO CAUSE THE MATERIAL TO DESUBLIMATE WITHIN SAID DRUM AT SUCH A RATE THAT SAID GRINDING MEDIA COMMINUTES THE SOLID DESUBLIMABLE MATERIAL CONTINUOUSLY IN ITS INTERIOR AS SOON AS SAID MATERIAL SOLIDIFIES THEREIN, AND CONTINUOUSLY DISCHARGING ONLY THE COMMINUTED SOLID MATERIAL FROM THE DRUM.
Claim 2
Dependent Claim
92 words
CONTINUOUS PROCESS FOR THE PREPARATION OF DESUBLIMABLE MATERIAL IN A SOLID, FINELY DIVIDED FORM WHICH COMPRISES CONTINUOUSLY PASSING SAID MATERIAL IN THE VAPOR STATE INTO A ROTATING DRUM HAVING PARTICULATE TUMBLING GRINDIG MEDIA THEREIN AT A PRESSURE AND TEMPERATURE AT WHICH DESUBLIMATION OF THE MATERIAL OCCURS SO AS TO CAUSE THE MATERIAL TO DESUBLIMATE WITHIN SAID DRUM AT SUCH A RATE THAT SAID GRINDING MEDIA COMMINUTES THE SOLID DESUBLIMABLE MATERIAL CONTINUOUSLY IN ITS INTERIOR AS SOON AS SAID MATERIAL SOLIDIFIES THEREIN, AND CONTINUOUSLY DISCHARGING ONLY THE COMMINUTED SOLID MATERIAL FROM THE DRUM.
References Cited (Backward Citations)
US1331964A
Cited
US1487248A
Cited
US2219996A
Cited
US2608472A
Cited
US2743996A
Cited
US2705186A
Cited
US2925145A
Cited
US2947613A
Cited
US3070601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |