US2951789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservative composition for cellulosic materials comprising heavy metal soaps
Assignee: Pan American Petroleum Corp
•
Filing: 1955-12-27
•
Granted: 1960-09-06
•
Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 James F Mccants
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
A; A01; A01N; A01N61/00; B; B27; B27K; B27K3/00; B27K3/16; B27K3/22; B27K3/34; B27K3/36; B27K3/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
AS A NEW COMPOSITION OF MATTER HEAVY METAL SOAPS OF AN ACID FRACTION PRODUCED IN THE SYNTHESIS OF HYDROCARBONS BY THE REACTION OF HYDROGEN WITH CARBON MONOXIDE IN THE PRESENCE OF A FLUIDIZED BED OF ALKALI-PROMOTED IRON CATALYST WHEREIN THE ACID COMPONENT OF SAID FRACTION CONSISTS ESSENTIALLY OF C13 AND HIGHER MOLECULAR WEIGHT ACIDS AND IS CONTAMINATED WITH FROM ABOUT 25 TO ABOUT 60 PERCENT OF HIGH BOILING HYDROCARBONS PRODUCED IN SAID SYNTHESIS AND BOILING SUBSTANTIALLY IN THE SAME RANGE AS THE ACIDS IN SAID FRACTION, SAID ACIDS FRACTION HAVING BEEN OBTAINED BY SUBJECTING THE FREE ACIDS PRESENT IN THE OIL PHASE, PRODUCED IN SAID SYNTHESIS, TO DISTIALLATION TO FORCE OVERHEAD A MIXTURE CONSISTING ESSENTIALLY OF THE C12 AND LOWER MOLECULAR WEIGHT ACIDS AND LEAVING A RESIDUE OF C13 AND HIGHER MOLECULAR WEIGHT ACIDS TOGETHER WITH SAID CONTAMINATING HYDROCARBONS, SAID HEAVY METALS BEING SELECTED FROM THE GROUP CONSISTING OF COPPER, ZINC AND LEAD.
Claim 2
Dependent Claim
153 words
AS A NEW COMPOSITION OF MATTER HEAVY METAL SOAPS OF AN ACID FRACTION PRODUCED IN THE SYNTHESIS OF HYDROCARBONS BY THE REACTION OF HYDROGEN WITH CARBON MONOXIDE IN THE PRESENCE OF A FLUIDIZED BED OF ALKALI-PROMOTED IRON CATALYST WHEREIN THE ACID COMPONENT OF SAID FRACTION CONSISTS ESSENTIALLY OF C13 AND HIGHER MOLECULAR WEIGHT ACIDS AND IS CONTAMINATED WITH FROM ABOUT 25 TO ABOUT 60 PERCENT OF HIGH BOILING HYDROCARBONS PRODUCED IN SAID SYNTHESIS AND BOILING SUBSTANTIALLY IN THE SAME RANGE AS THE ACIDS IN SAID FRACTION, SAID ACIDS FRACTION HAVING BEEN OBTAINED BY SUBJECTING THE FREE ACIDS PRESENT IN THE OIL PHASE, PRODUCED IN SAID SYNTHESIS, TO DISTIALLATION TO FORCE OVERHEAD A MIXTURE CONSISTING ESSENTIALLY OF THE C12 AND LOWER MOLECULAR WEIGHT ACIDS AND LEAVING A RESIDUE OF C13 AND HIGHER MOLECULAR WEIGHT ACIDS TOGETHER WITH SAID CONTAMINATING HYDROCARBONS, SAID HEAVY METALS BEING SELECTED FROM THE GROUP CONSISTING OF COPPER, ZINC AND LEAD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |