US2595733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated abrasive article and the method of making the same
Assignee: Unifrax I LLC
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Filing: 1940-07-15
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Granted: 1952-05-06
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Expires: 1960-07-15
Abstract
No abstract record available.
Inventors
- 👤 Frank J Tone
- 👤 Harry C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:14
CPC Classifications
B; B24; B24D; B24D11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A COATED ABRASIVE ARTICLE OF THE NATURE OF SANDPAPER COMPRISING A BACKING HAVING A LAYER OF GRIT BONDED THERETO BY A TOUGH, BRITTLE, SUBSTANTIALLY INFLEXIBLE BOND CONSISTING ESSENTIALLY OF A HEAT-HARDENED SUBSTANTIALLY UNPLASTICIZED PHENOL-ALDEHYDE CONDENSATION PRODUCT RESIN, THE BACKING BEING SUBSTANTIALLY UNPENETRATED BY AND UNMODIFIED BY THE BOND AND THE BOND HAVING THE TENSILE STRENGTH, WATER-RESISTANCE AND HARDNESS CHARACTERISTIC OF SUCH RESINS WHEN CURED FOR A NUMBER OF HOURS AT A TEMPERATURE OF AT LEAST 250* F.
Claim 2
Dependent Claim
77 words
A COATED ABRASIVE ARTICLE OF THE NATURE OF SANDPAPER COMPRISING A BACKING HAVING A LAYER OF GRIT BONDED THERETO BY A TOUGH, BRITTLE, SUBSTANTIALLY INFLEXIBLE BOND CONSISTING ESSENTIALLY OF A HEAT-HARDENED SUBSTANTIALLY UNPLASTICIZED PHENOL-ALDEHYDE CONDENSATION PRODUCT RESIN, THE BACKING BEING SUBSTANTIALLY UNPENETRATED BY AND UNMODIFIED BY THE BOND AND THE BOND HAVING THE TENSILE STRENGTH, WATER-RESISTANCE AND HARDNESS CHARACTERISTIC OF SUCH RESINS WHEN CURED FOR A NUMBER OF HOURS AT A TEMPERATURE OF AT LEAST 250* F.
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) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |