Patent US2580245A successfully refreshed from Google Patents.
Patent US2838802A successfully refreshed from Google Patents.
US2838802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of compressed pellets or tablets from finely divided solid materials
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1955-11-07
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Granted: 1958-06-17
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Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Reynolds Peter William
- 👤 Bates Eric Billingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:41
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J2/00; B01J2/22; Y; Y10; Y10S; Y10S425/00; Y10S425/115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR THE PRODUCTION OF COMPRESSED PELLETS BY FEEDING FINELY DIVIDED SOLID MATERIAL INTO DIES AND COMPRESSING IT BETWEEN PUNCHES WHICH COMPRISES THE SUCCESSIVE STEPS OF PRODUCING FROM EACH DIE AT LEAST ONE PELLET OF A MATERIAL COMPRISING A LUBRICANT AND THEN PRODUCING FROM EACH DIE AT LEAST ONE PELLET OF THE DESIRED MATERIAL.
Claim 2
Dependent Claim
55 words
A PROCESS FOR THE PRODUCTION OF COMPRESSED PELLETS BY FEEDING FINELY DIVIDED SOLID MATERIAL INTO DIES AND COMPRESSING IT BETWEEN PUNCHES WHICH COMPRISES THE SUCCESSIVE STEPS OF PRODUCING FROM EACH DIE AT LEAST ONE PELLET OF A MATERIAL COMPRISING A LUBRICANT AND THEN PRODUCING FROM EACH DIE AT LEAST ONE PELLET OF THE DESIRED MATERIAL.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |