US3261670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conispherical vessel for crystallization
Assignee: Chicago Bridge and Iron Co
•
Filing: 1965-04-21
•
Granted: 1966-07-19
•
Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Anthony N Chirico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:03
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0036; B01J; B01J2219/00; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1942; B01J2219/1946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A CHEMICAL PROCESSING CRYSTALLIZER HAVING LARGE CAPACITY COMPRISING A CONISPHERICAL VESSEL HAVING A HEMISPHERICAL TOP PORTION AND A CONICAL BOTTOM PORTION DIRECTLY CONNECTED TO SAID TOP PORTION CONVERGING TO AN APEX AT THE BOTTOM OF SAID VESSEL, THE INTERSECTION OF SAID TOP PORTION AND SAID BOTTOM PORTION BEING TANGENTIAL, AN EQUATOR BELT IN SAID TOP PORTION, A VAPOR OUTLET IN SAID TOP PORTION, FEED INLET MEANS IMMEDIATELY ADJACENT AND
Claim 2
Dependent Claim
69 words
A CHEMICAL PROCESSING CRYSTALLIZER HAVING LARGE CAPACITY COMPRISING A CONISPHERICAL VESSEL HAVING A HEMISPHERICAL TOP PORTION AND A CONICAL BOTTOM PORTION DIRECTLY CONNECTED TO SAID TOP PORTION CONVERGING TO AN APEX AT THE BOTTOM OF SAID VESSEL, THE INTERSECTION OF SAID TOP PORTION AND SAID BOTTOM PORTION BEING TANGENTIAL, AN EQUATOR BELT IN SAID TOP PORTION, A VAPOR OUTLET IN SAID TOP PORTION, FEED INLET MEANS IMMEDIATELY ADJACENT AND
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |