Patent US3253650A successfully refreshed from Google Patents.
US3253650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-exchange apparatus
Assignee: Individual
•
Filing: 1960-07-11
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Granted: 1966-05-31
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Frank J Mcentee Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:24
CPC Classifications
B; B02; B02C; B02C11/00; B02C11/08; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; B02C17/00; B02C17/18; B02C21/00; C; C04; C04B; C04B7/00; C04B7/36; F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16; F28D; F28D13/00; F28D7/00; F28D7/10; F28D7/12; F28D7/16; F28D7/163; F28D7/1669; F28D7/1676; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/14; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00123; F28D21/00; F28D2021/0019; F28D2021/0045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
HEAT-EXCHANGE APPARATUS FOR TREATING PULVERULENT MATERIAL COMPRISING A VESSEL TO RECEIVE THE PULVERULENT MATERIAL, THE PORTION OF THE VESSEL WHICH RECEIVES THE MATERIAL AND IN WHICH THE MATERIAL IS TREATED HAVING AN INLET ADJACENT ONE END OF THE VESSEL FOR THE INTRODUCTION OF MATERIAL TO BE TREATED AND AN OUTLET FOR TREATED MATERIAL ADJACENT THE OTHER END THEREOF FOR THE DISCHARGE OF TREATED MATERIAL, SAID DISCHARGE OUTLET INCLUDING AN UPWARDLYEXTENDING DISCHARGE CONDUIT COMMUNICATING WITH THE DISCHARGE OUTLET, AND MEANS FOR INTRODUCING A GAS INTO THE LOWER PORTION OF THE UPWARDLY-EXTENDING DISCHARGE CONDUIT TO FACILITATE FLOW OF THE PULVERULENT MATERIAL DISCHARGED FROM THE PORTION OF THE VESSEL IN WHICH IT ITS TREATED UPWARDLY THROUGH SAID CONDUIT, SAID DISCHARGE CONDUIT HAVING A DISCHARGE OUTLET ADJACENT ITS UPPER END, AT LEAST A PORTION OF THE BOTTOM OF THE VESSEL BEING GAS-PERMEABLE,
Claim 2
Dependent Claim
138 words
HEAT-EXCHANGE APPARATUS FOR TREATING PULVERULENT MATERIAL COMPRISING A VESSEL TO RECEIVE THE PULVERULENT MATERIAL, THE PORTION OF THE VESSEL WHICH RECEIVES THE MATERIAL AND IN WHICH THE MATERIAL IS TREATED HAVING AN INLET ADJACENT ONE END OF THE VESSEL FOR THE INTRODUCTION OF MATERIAL TO BE TREATED AND AN OUTLET FOR TREATED MATERIAL ADJACENT THE OTHER END THEREOF FOR THE DISCHARGE OF TREATED MATERIAL, SAID DISCHARGE OUTLET INCLUDING AN UPWARDLYEXTENDING DISCHARGE CONDUIT COMMUNICATING WITH THE DISCHARGE OUTLET, AND MEANS FOR INTRODUCING A GAS INTO THE LOWER PORTION OF THE UPWARDLY-EXTENDING DISCHARGE CONDUIT TO FACILITATE FLOW OF THE PULVERULENT MATERIAL DISCHARGED FROM THE PORTION OF THE VESSEL IN WHICH IT ITS TREATED UPWARDLY THROUGH SAID CONDUIT, SAID DISCHARGE CONDUIT HAVING A DISCHARGE OUTLET ADJACENT ITS UPPER END, AT LEAST A PORTION OF THE BOTTOM OF THE VESSEL BEING GAS-PERMEABLE,
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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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |