US2877104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive material and method of making same
Assignee: Electro Refractories and Abrasives Corp
•
Filing: 1955-07-05
•
Granted: 1959-03-10
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 Norman P Robie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:28
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A RAW BATCH FOR THE PRODUCTION OF A FUSED ABRASIVE CONSISTING OF ORES HIGH IN ZIRCONIA AND TITANIA, THE ZIRCONIA AND TITANIA BEING SUFFICIENT TO CONSTITUTE AT LEAST 80% OF THE FINAL PRODUCT AND IN A POPORTION TO ONE ANOTHER BETWEEN 8:2 AND 2:8 SAID ORES ALSO CONTAINING SILICA AND IRON OXIDE, THE BATCH ALSO CONTAINING CARBON IN AN AMOUNT FROM 0 TO 20% LESS THAN THAT THEORETICALLY REQUIRED TO REDUCE TO METAL THE PORTION OF THE BATCH CONSISTING OF SAID OXIDES OF SILICON AND IRON.
Claim 2
Dependent Claim
86 words
A RAW BATCH FOR THE PRODUCTION OF A FUSED ABRASIVE CONSISTING OF ORES HIGH IN ZIRCONIA AND TITANIA, THE ZIRCONIA AND TITANIA BEING SUFFICIENT TO CONSTITUTE AT LEAST 80% OF THE FINAL PRODUCT AND IN A POPORTION TO ONE ANOTHER BETWEEN 8:2 AND 2:8 SAID ORES ALSO CONTAINING SILICA AND IRON OXIDE, THE BATCH ALSO CONTAINING CARBON IN AN AMOUNT FROM 0 TO 20% LESS THAN THAT THEORETICALLY REQUIRED TO REDUCE TO METAL THE PORTION OF THE BATCH CONSISTING OF SAID OXIDES OF SILICON AND IRON.
References Cited (Backward Citations)
US486941A
Cited
US966815A
Cited
US1001571A
Cited
US1240490A
Cited
US1240491A
Cited
US2169193A
Cited
US2139516A
Cited
US2280286A
Cited
US2471242A
Cited
US2769699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |