Patent US2899288A successfully refreshed from Google Patents.
US2899288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an abrasive sheet
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:15
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF FORMING A BACKING SHEET HAVING AN ABRASIVE MATERIAL ON ONE FACE THEREOF WHICH COMPRISES PROVIDING A CLOTH BACKING SHEET FABRICATED OF THERMOPLASTIC MATERIAL CAPABLE OF BEING CONVERTED TO A TEMPORARY SOFTENED STATE UPON THE APPLICATION OF HEAT THERETO, FEEDING SAID SHEET WITH ONE FACE FACING UPWARDLY THROUGH A ZONE HEATED TO A TEMPERATURE FOR CONVERSION OF SAID MATERIAL TO A TEMPORARY SOFTENED STATE TO EFFECT CONVERSION OF THE MATERIAL OF SAID ONE FACE TO A TEMPORARY SOFTENED STATE, APPLYING ABRASIVE MATERIAL IN A FINELY DIVIDED CONDITION OVER THE ENTIRE AREA OF SAID SHEET ONE FACE WHILE IN THE TEMPORARY SOFTENED STATE, COOLING THE THUS TREATED SHEET TO EFFECT RESTORATION OF THE THERMOPLASTIC MATERIAL IN SAID SHEET ONE FACE TO THE ORIGINAL STATE, AND RECOVERING THE THUS COOLED SHEET.
Claim 2
Independent Claim
131 words
THE METHOD OF FORMING A BACKING SHEET HAVING AN ABRASIVE MATERIAL ON ONE FACE THEREOF WHICH COMPRISES PROVIDING A CLOTH BACKING SHEET FABRICATED OF THERMOPLASTIC MATERIAL CAPABLE OF BEING CONVERTED TO A TEMPORARY SOFTENED STATE UPON THE APPLICATION OF HEAT THERETO, FEEDING SAID SHEET WITH ONE FACE FACING UPWARDLY THROUGH A ZONE HEATED TO A TEMPERATURE FOR CONVERSION OF SAID MATERIAL TO A TEMPORARY SOFTENED STATE TO EFFECT CONVERSION OF THE MATERIAL OF SAID ONE FACE TO A TEMPORARY SOFTENED STATE, APPLYING ABRASIVE MATERIAL IN A FINELY DIVIDED CONDITION OVER THE ENTIRE AREA OF SAID SHEET ONE FACE WHILE IN THE TEMPORARY SOFTENED STATE, COOLING THE THUS TREATED SHEET TO EFFECT RESTORATION OF THE THERMOPLASTIC MATERIAL IN SAID SHEET ONE FACE TO THE ORIGINAL STATE, AND RECOVERING THE THUS COOLED SHEET.
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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |