Patent US3058819A successfully refreshed from Google Patents.
US3058819A
Expired / Lapsed
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Anti-weld additives for coated abrasive bonds
Assignee: Unifrax I LLC
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Filing: 1959-01-14
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Granted: 1962-10-16
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Expires: 1979-01-14
Abstract
No abstract record available.
Inventors
- 👤 William T Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:33
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/285; B24D11/00; B24D3/001; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COATED ABRASIVE ARTICLE CHARACTERIZED BY RESISTANCE TO GLAZING AND COMPRISING A BACKING, ABRASIVE PARTICLES, AND A BOND SECURING SAID PARTICLES TO SAID BACKING, SAID BOND INCLUDING A SANDSIZE COAT COMPRISING A RESINOUS CONDENSATION PRODUCT OF A PHENOL, AN ALDEHYDE, AND, AS AN ANTI-WELD ADDITIVE, A MINOR AMOUNT UP TO ABOUT 20% BY WEIGHT, BASED ON THE INITIAL PHENOL, OF A WATER-SOLUBLE UREA DERIVATIVE CONTAINING SULPHUR.
Claim 2
Dependent Claim
66 words
A COATED ABRASIVE ARTICLE CHARACTERIZED BY RESISTANCE TO GLAZING AND COMPRISING A BACKING, ABRASIVE PARTICLES, AND A BOND SECURING SAID PARTICLES TO SAID BACKING, SAID BOND INCLUDING A SANDSIZE COAT COMPRISING A RESINOUS CONDENSATION PRODUCT OF A PHENOL, AN ALDEHYDE, AND, AS AN ANTI-WELD ADDITIVE, A MINOR AMOUNT UP TO ABOUT 20% BY WEIGHT, BASED ON THE INITIAL PHENOL, OF A WATER-SOLUBLE UREA DERIVATIVE CONTAINING SULPHUR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |