Patent US3592618A successfully refreshed from Google Patents.
US3592618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive article having a metal filler and an active filler
Assignee: Avco Corp
•
Filing: 1969-03-10
•
Granted: 1971-07-13
•
Expires: 1989-03-10
Abstract
Abstract THE INVENTION COVERS AN ABRASIVE ARTICLE WHICH IS CONSTRUCTED WITH TWO OR MORE FILLED CONSTITUENTS THAT CO-REACT TO FORM A GRINDING AID. GENERALLY, THE FILLERS COMPRISE A METAL AND A METL SALT WHICH UPON THE APLLICATION OF HEAT REACT TO IMPROVE THE GRINDING EFFICIECY WHEN COMPARED WITH ABRASIVE ARTICLES CONTAINING EITHER OF THE TWO CONSITUTENTS THAT MAKE UP THE NOVEL FILLER COMBINATION. ONE OF THE PREFERRED FILLER CONSTITUENTS IS A REINFORCING SUBSTANCE; THE OTHER IS AN ACTIVE GRINDING AID.
Inventors
- 👤 Gardner E Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:36
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |