US2808236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystallizing apparatus
Assignee: Diamond Shamrock Corp
•
Filing: 1953-04-29
•
Granted: 1957-10-01
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Dickinson Calvin Lafayette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
C; C07; C07C; C07C25/00; C07C25/18; C07C25/20; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN APPARATUS FOR USE IN CRYSTALLIZING DDT COMPRISING A SUPPORT, AN ENDLESS, SUBSTANTIALLY FLAT, IMPERMEABLE BELT FOR RECEIVING SAID DDT, SAID BELT MOVABLY MOUNTED ON SAID SUPPORT AND ADAPTED TO TRAVEL CONTINUOUSLY TOWARD A DDT DISCHARGE ZONE, MEANS FOR DRIVING SAID BELT, A HEAT EXCHANGER ADAPTED TO COOL SAID BELT, AN AGITATOR POSITIONED ADJACENT SAID BELT SO THAT LIQUID DDT ON SAID BELT CAN BE AGITATED BY MOTION OF SAID AGITATOR, SAID AGITATOR COMPRISING A SERIES OF ELEMENTS SPACED APART AND ADAPTED TO BE HEATED INTERNALLY, SAID ELEMENTS ADAPTED TO PERMIT TRANSPORT OF DDT THEREBETWEEN BY SAID BELT.
Claim 2
Independent Claim
98 words
AN APPARATUS FOR USE IN CRYSTALLIZING DDT COMPRISING A SUPPORT, AN ENDLESS, SUBSTANTIALLY FLAT, IMPERMEABLE BELT FOR RECEIVING SAID DDT, SAID BELT MOVABLY MOUNTED ON SAID SUPPORT AND ADAPTED TO TRAVEL CONTINUOUSLY TOWARD A DDT DISCHARGE ZONE, MEANS FOR DRIVING SAID BELT, A HEAT EXCHANGER ADAPTED TO COOL SAID BELT, AN AGITATOR POSITIONED ADJACENT SAID BELT SO THAT LIQUID DDT ON SAID BELT CAN BE AGITATED BY MOTION OF SAID AGITATOR, SAID AGITATOR COMPRISING A SERIES OF ELEMENTS SPACED APART AND ADAPTED TO BE HEATED INTERNALLY, SAID ELEMENTS ADAPTED TO PERMIT TRANSPORT OF DDT THEREBETWEEN BY SAID BELT.
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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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |