US2609285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive article
Assignee: Unifrax I LLC
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Filing: 1949-12-08
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Granted: 1952-09-02
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Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jr James A Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METAL-BONDED ABRASIVE ARTICLE COMPRISING A SINTERED ABRASIVE PORTION CONTAININNG A MINOR PROPORTION OF DIAMOND ABRASIVE PARTICLES AND A BOND COMPRISING THE SINTERED REACTION PRODUCT OF A MAJOR PROPORTION OF COPPER POWDER AND TIN POWDER IN AN AMOUNT UP TO ABOUT 20% OOF THE WEIGHT OF SAID BOND, AND AN INTERGRAL, SINTERED NON-ABRASIVE METAL SUPPORT FOR SAID ABRASIVE PORTION COMPRISING IN SINTERED FORM ABOUT 5070% IRON POWDER, 24-40% COPPER POWDER AND 6-10% TIN POWDER.
Claim 2
Dependent Claim
74 words
A METAL-BONDED ABRASIVE ARTICLE COMPRISING A SINTERED ABRASIVE PORTION CONTAININNG A MINOR PROPORTION OF DIAMOND ABRASIVE PARTICLES AND A BOND COMPRISING THE SINTERED REACTION PRODUCT OF A MAJOR PROPORTION OF COPPER POWDER AND TIN POWDER IN AN AMOUNT UP TO ABOUT 20% OOF THE WEIGHT OF SAID BOND, AND AN INTERGRAL, SINTERED NON-ABRASIVE METAL SUPPORT FOR SAID ABRASIVE PORTION COMPRISING IN SINTERED FORM ABOUT 5070% IRON POWDER, 24-40% COPPER POWDER AND 6-10% TIN POWDER.
References Cited (Backward Citations)
US2506556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |