Patent US3230286A successfully refreshed from Google Patents.
US3230286A
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Compacting of particulate materials
Assignee: Engelhard Industries Inc
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Filing: 1961-01-23
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Granted: 1966-01-18
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Alfred R Bobrowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:56
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/22; B22; B22F; B22F3/00; B22F3/02; B22F3/04; B22F3/12; B22F3/1208; B22F3/14; B22F3/15; Y; Y10; Y10S; Y10S425/00; Y10S425/005; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2648125A
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US2847708A
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US2941245A
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US3044113A
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US2995776A
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US3030661A
Cited
US3030662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |