Patent US2921335A successfully refreshed from Google Patents.
US2921335A
Expired / Lapsed
US
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Apparatus for granulating molten solids
Assignee: Phillips Petroleum Co
•
Filing: 1956-08-27
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Granted: 1960-01-19
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Expires: 1976-08-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Bowers
- 👤 Jr Joseph D Stafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
C; C05; C05C; C05C1/00; C05C1/02; Y; Y10; Y10S; Y10S425/00; Y10S425/803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US6460A
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US1837869A
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US2633604A
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US2510574A
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US2528407A
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US2714224A
Cited
DE932246C
Cited
US2770008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |