Patent US3254041A successfully refreshed from Google Patents.
US3254041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable slurry of calcium carbonate and calcium stearate, and methods of making and using it
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-12-28
•
Granted: 1966-05-31
•
Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William G De Pierri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:48
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
A METHOD OF ADDING CALCIUM CARBONATE AND CALCIUM STEARATE TO A POLYOLEFIN PRODUCT TO IMPROVE THE MOLD CORROSION AND OXIDATIVE STABILITY THEREOF WHICH COMPRISES ADMIXING IN A MIXING ZONE 100 PARTS BY WEIGHT OF CALCIUM CARBONATE PARTICLES HAVING A MAXIUM SIZE OF 15 MICRONS WITH FROM 50 TO 500 PARTS OF CALCIUM STEARATE PARTICLES HAVING A MAXIMUM SIZE OF 50 MICRONS AND SUFFICIENT SOLVENT TO PRODUCE A SLURRY HAVING A MAXIMUM SOLIDS CONTENT OF 40% BY WEIGHT, SAID ADMIXING BEING CONTINUED FOR A TIME SUFFICIENT TO FORM A HOMOGENEOUS SLURRY, AND ADMIXING SAID SLURRY WITH SAID POLYOLEFIN WHICH IS RECOVERED FROM THE POLYMERIZATION REACTION AND BEFORE SAID POLYOLEFIN HAS BEEN COMPLETELY DRIED.
Claim 2
Independent Claim
112 words
A METHOD OF ADDING CALCIUM CARBONATE AND CALCIUM STEARATE TO A POLYOLEFIN PRODUCT TO IMPROVE THE MOLD CORROSION AND OXIDATIVE STABILITY THEREOF WHICH COMPRISES ADMIXING IN A MIXING ZONE 100 PARTS BY WEIGHT OF CALCIUM CARBONATE PARTICLES HAVING A MAXIUM SIZE OF 15 MICRONS WITH FROM 50 TO 500 PARTS OF CALCIUM STEARATE PARTICLES HAVING A MAXIMUM SIZE OF 50 MICRONS AND SUFFICIENT SOLVENT TO PRODUCE A SLURRY HAVING A MAXIMUM SOLIDS CONTENT OF 40% BY WEIGHT, SAID ADMIXING BEING CONTINUED FOR A TIME SUFFICIENT TO FORM A HOMOGENEOUS SLURRY, AND ADMIXING SAID SLURRY WITH SAID POLYOLEFIN WHICH IS RECOVERED FROM THE POLYMERIZATION REACTION AND BEFORE SAID POLYOLEFIN HAS BEEN COMPLETELY DRIED.
Claim 3
Independent Claim
64 words
A METHOD OF FORMING A STABLE SLURRY FOR ADDITION TO A POLYOLEFIN PRODUCT WHICH COMPRISES ADMIXING 100 PARTS OF WEIGHT OF CALCIUM CARBONATE HAVING A MAXIMUM SIZE OF 15 MICRONS WITH 50 TO 500 PARTS BY WEIGHT OF CALCIUM STEARATE HAVING A MAXIMUM PARTICLE SIZE OF 50 MICRONS, AND SUFFICIENT SOLVENT TO PRODUCE A SLURRY HAVING A MAXIMUM SOLIDS CONTENT OF 40% BY WEIGHT.
Claim 4
Independent Claim
64 words
A METHOD OF FORMING A STABLE SLURRY FOR ADDITION TO A POLYOLEFIN PRODUCT WHICH COMPRISES ADMIXING 100 PARTS OF WEIGHT OF CALCIUM CARBONATE HAVING A MAXIMUM SIZE OF 15 MICRONS WITH 50 TO 500 PARTS BY WEIGHT OF CALCIUM STEARATE HAVING A MAXIMUM PARTICLE SIZE OF 50 MICRONS, AND SUFFICIENT SOLVENT TO PRODUCE A SLURRY HAVING A MAXIMUM SOLIDS CONTENT OF 40% BY WEIGHT.
References Cited (Backward Citations)
US2863784A
Cited
US2883901A
Cited
US2985617A
Cited
US2984634A
Cited
US2990748A
Cited
US2991264A
Cited
US3160598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |