US2696431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agglomerating finely divided lead
Assignee: EIDP Inc
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Filing: 1952-08-22
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Granted: 1954-12-07
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Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Thomas V Kidd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:47
CPC Classifications
C; C22; C22B; C22B13/00; B; B22; B22F; B22F1/00; B22F1/14; B22F1/148; C22B1/00; C22B1/14; C22B1/24; C22B1/242; C22B1/244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
THE PROCESS FOR AGGLOMERATING LEAD PARTICLES IN AN AQUEOUS SLURRY OF FINELY DIVIDED LEAD IN WHICH THE LEAD PARTICLES HAVE AVERAGE RADII OF LESS THAN 75 MICRONS AND ARE IN A CONCENTRATION OF FROM ABOUT 15% TO ABOUT 75% BY WEIGHT AND WHICH SLURRY HAS A PH OF FROM ABOUT 5 TO ABOUT 11, WHICH PROCESS COMPRISES MIXING SUCH SLURRY AT A TEMPERATURE OF FROM ABOUT 20* C. TO 100* C. WITH FROM ABOUT 0.2% TO ABOUT 5% BY WEIGHT BASED ON THE LEAD OF A FATTY ACID COMPOSITION WHICH IS LIQUID AT THE TEMPERATURE EMPLOYED AND WHICH IS A MEMBER OF THE GROUP CONSISTING OF MIXTURES OF FATTY ACIDS OF 16 TO 20 CARBON ATOMS OF WHICH AT LEAST 80% ARE UNSATURATED ACIDS AND 5% TO ABOUT 60% ARE DIENIC ACIDS AND WHICH MIXTURES HAVE IODINE NUMBERS GREATER THAN 80, SINGLE SATURATED FATTY ACIDS OF 10 TO 31 CARBON ATOMS, AND MIXTURES OF FATTY ACIDS OF 10 TO 31 CARBON ATOMS OF WHICH AT LEAST 80% ARE SATURATED ACIDS AND WHICH MIXTURES HAVE IODINE NUMBERS NO GREATER THAN 10; AND SUBJECTING THE MIXTURE TO VIGOROUS MECHANICAL AGITATION FOR AT LEAST 2 MINUTES; SUCH PROCESS BEING CARRIED OUT IN THE ABSENCE OF OXYGEN.
Claim 2
Dependent Claim
203 words
THE PROCESS FOR AGGLOMERATING LEAD PARTICLES IN AN AQUEOUS SLURRY OF FINELY DIVIDED LEAD IN WHICH THE LEAD PARTICLES HAVE AVERAGE RADII OF LESS THAN 75 MICRONS AND ARE IN A CONCENTRATION OF FROM ABOUT 15% TO ABOUT 75% BY WEIGHT AND WHICH SLURRY HAS A PH OF FROM ABOUT 5 TO ABOUT 11, WHICH PROCESS COMPRISES MIXING SUCH SLURRY AT A TEMPERATURE OF FROM ABOUT 20* C. TO 100* C. WITH FROM ABOUT 0.2% TO ABOUT 5% BY WEIGHT BASED ON THE LEAD OF A FATTY ACID COMPOSITION WHICH IS LIQUID AT THE TEMPERATURE EMPLOYED AND WHICH IS A MEMBER OF THE GROUP CONSISTING OF MIXTURES OF FATTY ACIDS OF 16 TO 20 CARBON ATOMS OF WHICH AT LEAST 80% ARE UNSATURATED ACIDS AND 5% TO ABOUT 60% ARE DIENIC ACIDS AND WHICH MIXTURES HAVE IODINE NUMBERS GREATER THAN 80, SINGLE SATURATED FATTY ACIDS OF 10 TO 31 CARBON ATOMS, AND MIXTURES OF FATTY ACIDS OF 10 TO 31 CARBON ATOMS OF WHICH AT LEAST 80% ARE SATURATED ACIDS AND WHICH MIXTURES HAVE IODINE NUMBERS NO GREATER THAN 10; AND SUBJECTING THE MIXTURE TO VIGOROUS MECHANICAL AGITATION FOR AT LEAST 2 MINUTES; SUCH PROCESS BEING CARRIED OUT IN THE ABSENCE OF OXYGEN.
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) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |