Patent US1270851A successfully refreshed from Google Patents.
Patent US2761768A successfully refreshed from Google Patents.
US2761768A
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Circulation nitrating apparatus
Assignee: POUDERIES REUNIS DE BELGIQUES
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Filing: 1953-03-18
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Granted: 1956-09-04
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Expires: 1973-03-18
Abstract
No abstract record available.
Inventors
- 👤 Diels Albert
- 👤 Orth Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:35
CPC Classifications
C; C07; C07B; C07B43/00; C07B43/02; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; B01J19/18; B01J19/1812; B01J19/1837; B01J19/24; B01J19/2415; B01J19/2425; B01J19/2455; B01J19/2465; C07C; C07C201/00; C07C201/06; C07C201/08; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
APPARATUS FOR CONTINUOUS NITRATION OF ORGANIC SUBSTANCES COMPRISING A VERTICAL CIRCULATING PIPE OF RELATIVELY LARGE DIAMETER, AN IMPELLER THEREIN FOR CAUSING LIQUID TO FLOW DOWNWARDLY THEREIN, MEANS FOR INTRODUCING ORGANIC SUBSTANCES AND NITRATING ACID INTO THE UPPER PART OF SAID PIPE, A JACKET FOR COOLING FLUID ABOUT SAID PIPE, A VERTICAL COOLING CHAMBER ADJACENT TO SAID PIPE, A CONNECTION FOR THE FLOW OF LIQUID FROM THE TOP OF SAID CHAMBER TO THE UPPER PART OF SAID PIPE AND A CONNECTION FOR THE FLOW OF LIQUID FROM THE LOWER END OF SAID PIPE TO THE LOWER END OF SAID CHAMBER, AN OVERFLOW IN SAID TOP CONNECTION FOR NITRATED SUBSTANCES, SAID CHAMBER CONSISTING OF A PLURALITY OF PARALLEL VERTICAL TUBES RELATIVELY SMALL DIAMETER, A JACKET FOR COOLING FLUID ABOUT SAID PLURALITY OF TUBES, THE ENDS OF SAID TUBES EXTENDING BEYOND SAID JACKET AND OPENING INTO THE UPPER AND LOWER SECTIONS OF SAID VERTICAL CIRCULATING PIPE RESPECTIVELY.
Claim 2
Dependent Claim
154 words
APPARATUS FOR CONTINUOUS NITRATION OF ORGANIC SUBSTANCES COMPRISING A VERTICAL CIRCULATING PIPE OF RELATIVELY LARGE DIAMETER, AN IMPELLER THEREIN FOR CAUSING LIQUID TO FLOW DOWNWARDLY THEREIN, MEANS FOR INTRODUCING ORGANIC SUBSTANCES AND NITRATING ACID INTO THE UPPER PART OF SAID PIPE, A JACKET FOR COOLING FLUID ABOUT SAID PIPE, A VERTICAL COOLING CHAMBER ADJACENT TO SAID PIPE, A CONNECTION FOR THE FLOW OF LIQUID FROM THE TOP OF SAID CHAMBER TO THE UPPER PART OF SAID PIPE AND A CONNECTION FOR THE FLOW OF LIQUID FROM THE LOWER END OF SAID PIPE TO THE LOWER END OF SAID CHAMBER, AN OVERFLOW IN SAID TOP CONNECTION FOR NITRATED SUBSTANCES, SAID CHAMBER CONSISTING OF A PLURALITY OF PARALLEL VERTICAL TUBES RELATIVELY SMALL DIAMETER, A JACKET FOR COOLING FLUID ABOUT SAID PLURALITY OF TUBES, THE ENDS OF SAID TUBES EXTENDING BEYOND SAID JACKET AND OPENING INTO THE UPPER AND LOWER SECTIONS OF SAID VERTICAL CIRCULATING PIPE RESPECTIVELY.
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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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |