US2929733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of heat stabilizing and plasticizing paste compositions
Assignee: NL Industries Inc
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Filing: 1957-12-16
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Granted: 1960-03-22
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Leonard M Kebrich
- 👤 Alfred W Stroebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:38
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR PREPARING A FLUSHED PASTE HAVING HEAT STABILIZING AND PLASTICIZING PROPERTIES FOR RESINOUS COMPOSITIONS WHICH COMPRISES AGITATING AN AQUEOUS FILTER CAKE OF A BASIC LEAD SALT WITH A LIQUID WATER-IMMISCIBLE ORGANIC PLASTICIZER IN THE PRESENCE OF ABOUT 0.5% TO ABOUT 5% BY WEIGHT, BASED ON THE WEIGHT OF SAID PLASTICIZER, OR A SATURATED FATTY ACID HAVING FROM 6 TO 22 CARBON ATOMS, THEREBY DISPERSING SAID BASIC LEAD SALT IN SAID ORGANIC PLASTICIZER WHILE AVOIDING ANY SUBSTANTIAL SAPONIFICATION OF SAID PLASTICIZER WITH SAID BASIC LEAD SALT, AND SEPARATING THE WATER PORTION OF SAID AQUEOUS FILTER CAKE FROM SAID ORGANIC PLASTICIZER AND SAID LEAD SALT THEREIN DISPERSED.
Claim 2
Dependent Claim
107 words
A PROCESS FOR PREPARING A FLUSHED PASTE HAVING HEAT STABILIZING AND PLASTICIZING PROPERTIES FOR RESINOUS COMPOSITIONS WHICH COMPRISES AGITATING AN AQUEOUS FILTER CAKE OF A BASIC LEAD SALT WITH A LIQUID WATER-IMMISCIBLE ORGANIC PLASTICIZER IN THE PRESENCE OF ABOUT 0.5% TO ABOUT 5% BY WEIGHT, BASED ON THE WEIGHT OF SAID PLASTICIZER, OR A SATURATED FATTY ACID HAVING FROM 6 TO 22 CARBON ATOMS, THEREBY DISPERSING SAID BASIC LEAD SALT IN SAID ORGANIC PLASTICIZER WHILE AVOIDING ANY SUBSTANTIAL SAPONIFICATION OF SAID PLASTICIZER WITH SAID BASIC LEAD SALT, AND SEPARATING THE WATER PORTION OF SAID AQUEOUS FILTER CAKE FROM SAID ORGANIC PLASTICIZER AND SAID LEAD SALT THEREIN DISPERSED.
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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |