US3078050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autogenous grinding process and mill systems to perform the same
Assignee: Individual
•
Filing: 1960-01-08
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Granted: 1963-02-19
•
Expires: 1980-01-08
Abstract
No abstract record available.
Inventors
- 👤 Hardinge Harlowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:16
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/183; B02C17/1835; B02C17/1855; B02C17/04; B02C21/00; B02C21/007
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A PROCESS OF GRINDING SOLID FRIABLE RUN-OF-MINE RAW MATERIAL TO EFFECT SIMULTANEOUS SELF-REDUCTION OF ALL SIZES THEREOF AND COMPRISING THE STEPS OF SUBJECTING THE RAW MATERIAL TO AUTOGENOUS GRINDING ACTION IN A PRIMARY MILL TO REDUCE THE SIZE OF THE PIECES AND PARTICLES THEREOF, REMOVING FROM SAID MILL A DESIRED RANGE OF THE LARGER SIZES OF SAID PIECES NOT EXCEEDING A PREDETERMINED MAXIMUM SIZE AND CAPABLE OF SERVING AS FRIABLE GRINDING MEDIA, AND INTRODUCING INTO A SECOND TUMBLING MILL A SELECTED PROPORTION OF SAID REMOVED PIECES AT A CONTROLLED RATE SUITABLE TO PRODUCE OPTIMUM GRINDING RESULTS THEREIN AND UTILIZING SAID FRIABLE PIECES FED TO SAID SECOND MILL AS GRINDING MEDIA FOR MATERIAL IN SAID MILL TO PRODUCE AU-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |