Patent US2840515A successfully refreshed from Google Patents.
US2840515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single circuit process and a plant for producing a series of products using wood as starting material
Assignee: Individual
•
Filing: 1952-08-12
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Granted: 1958-06-24
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Expires: 1972-08-12
Abstract
No abstract record available.
Inventors
- 👤 Mora Fernando Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:33
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/02; C07; C07C; C07C51/00; C07C51/41; C07C51/412; Y; Y02; Y02E; Y02E50/00; Y02E50/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A CONTINUOUS PROCESS FOR THE PRODUCTION OF A CALCIUM ACETATE LIQUOR SUITABLE FOR THE PRODUCTION OF ACETONE THEREFROM FROM THE GASEOUS PRODUCT COLLECTED DURING THE CARBONIZATION OF WOOD, THE IMPROVEMENT WHICH COMPRISES SEPARATING INSOLUBLE TAR FROM SAID GASEOUS PRODUCT, COOLING THE REMAINING GASEOUS PRODUCT TO AN INTERMEDIATE TEMPERATURE TO SIMULTANEOUSLY CONDENSE SUBSTANTIALLY ONLY SOLUBLE TAR AND PYROLIGNEOUS ACID, PRECIPITATING SAID SOLUBLE TAR WITH SULPHURIC ACID AND NEUTRALIZING SAID PYROLIGNEOUS ACID TO PRODUCE SAID CALCIUM ACETATE LIQUOR.
Claim 2
Dependent Claim
77 words
IN A CONTINUOUS PROCESS FOR THE PRODUCTION OF A CALCIUM ACETATE LIQUOR SUITABLE FOR THE PRODUCTION OF ACETONE THEREFROM FROM THE GASEOUS PRODUCT COLLECTED DURING THE CARBONIZATION OF WOOD, THE IMPROVEMENT WHICH COMPRISES SEPARATING INSOLUBLE TAR FROM SAID GASEOUS PRODUCT, COOLING THE REMAINING GASEOUS PRODUCT TO AN INTERMEDIATE TEMPERATURE TO SIMULTANEOUSLY CONDENSE SUBSTANTIALLY ONLY SOLUBLE TAR AND PYROLIGNEOUS ACID, PRECIPITATING SAID SOLUBLE TAR WITH SULPHURIC ACID AND NEUTRALIZING SAID PYROLIGNEOUS ACID TO PRODUCE SAID CALCIUM ACETATE LIQUOR.
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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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |