Patent US2802236A successfully refreshed from Google Patents.
US2802236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling and handling of petroleum pitches
Assignee: Phillips Petroleum Co
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Filing: 1953-07-27
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Granted: 1957-08-13
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Martin E Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:04
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/24; C; C01; C01B; C01B17/00; C01B17/02; C01B17/0237; C10; C10C; C10C3/00; C10C3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR FORMING GRANULAR SOLID PRODUCTS FROM HOT LIQUID PRODUCTS WHICH COMPRISES COATING A COOLED MASS OF SOLID FRAGMENTARY HEAT TRANSFER MATERIAL WITH A HOT LIQUID PRODUCT; AGITATING SAID SOLID HEAT TRANSFER MATERIAL SO AS TO REMOVE THEREFROM THE COATING OF SOLID PRODUCT IN GRANULAR FORM; AND SEPARATING SAID HEAT TRANSFER MATERIAL FROM SAID PRODUCT.
Claim 2
Dependent Claim
56 words
A PROCESS FOR FORMING GRANULAR SOLID PRODUCTS FROM HOT LIQUID PRODUCTS WHICH COMPRISES COATING A COOLED MASS OF SOLID FRAGMENTARY HEAT TRANSFER MATERIAL WITH A HOT LIQUID PRODUCT; AGITATING SAID SOLID HEAT TRANSFER MATERIAL SO AS TO REMOVE THEREFROM THE COATING OF SOLID PRODUCT IN GRANULAR FORM; AND SEPARATING SAID HEAT TRANSFER MATERIAL FROM SAID PRODUCT.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |