US3350482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing spherical solids
Assignee: Sunoco Inc
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Filing: 1962-04-18
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Granted: 1967-10-31
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Expires: 1982-04-18
Abstract
No abstract record available.
Inventors
- 👤 Rolland G Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:57
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/20; B01J2/02; B01J2/06; B01J2/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
PROCESS FOR PREPARING SOLID CTALYST PARTICLES WHICH COMPRISES: EXTRUDING PLASTIC MATERIAL COMPRISING A MIXTURE OF SOLID GRANULES OF SILICEOUS ADSORBENT MATERIAL AND A LIQUID MATERIAL IN AMOUNT 40 TO 90 WEIGHT PERCENT BASED ON TOTAL SOLID-LIQUID COMPOSITE; CUTTING THE EXTRUDED MATERIAL INTO PARTICLES HAVING SUBSTANTIALLY UNIFORM LENGTH; PASSING THE PARTICLES THROUGH A FLUID MEDUM THEREBY TO CONVERT THEM TO MORE NEARLY SPHERICAL SHAPE; AND REMOVING EXCESS LIQUID FROM THE PARTICLES TO OBTAIN DISCRETE, SELFSUSTAINING PARTICLES WITH A MINIMUM OF SHRINKAGE.
Claim 2
Dependent Claim
80 words
PROCESS FOR PREPARING SOLID CTALYST PARTICLES WHICH COMPRISES: EXTRUDING PLASTIC MATERIAL COMPRISING A MIXTURE OF SOLID GRANULES OF SILICEOUS ADSORBENT MATERIAL AND A LIQUID MATERIAL IN AMOUNT 40 TO 90 WEIGHT PERCENT BASED ON TOTAL SOLID-LIQUID COMPOSITE; CUTTING THE EXTRUDED MATERIAL INTO PARTICLES HAVING SUBSTANTIALLY UNIFORM LENGTH; PASSING THE PARTICLES THROUGH A FLUID MEDUM THEREBY TO CONVERT THEM TO MORE NEARLY SPHERICAL SHAPE; AND REMOVING EXCESS LIQUID FROM THE PARTICLES TO OBTAIN DISCRETE, SELFSUSTAINING PARTICLES WITH A MINIMUM OF SHRINKAGE.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |