US2875107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titaniferous ore treatment
Assignee: EIDP Inc
•
Filing: 1956-02-21
•
Granted: 1959-02-24
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Daiger William Hammett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1236; C22B34/124; C22B34/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD FOR TREATING TITANIFEROUS SAND TYPE ARES THE MINERAL GRAINS OF WHICH RANGE IN SIZE FROM ABOUT 200-30 MESH WHICH COMPRISES AGITATING THE ORE IN A DILUTE AQUEOUS ALKALI SOLUTION AT A STRENGHT RANGING FROM .01-20 WEIGHT PERCENT AND THEREAFTER WASHING THE TREATED ORE WITH WATER.
Claim 2
Independent Claim
47 words
A METHOD FOR TREATING TITANIFEROUS SAND TYPE ARES THE MINERAL GRAINS OF WHICH RANGE IN SIZE FROM ABOUT 200-30 MESH WHICH COMPRISES AGITATING THE ORE IN A DILUTE AQUEOUS ALKALI SOLUTION AT A STRENGHT RANGING FROM .01-20 WEIGHT PERCENT AND THEREAFTER WASHING THE TREATED ORE WITH WATER.
References Cited (Backward Citations)
US1760992A
Cited
US2724667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |