US2711365A
Expired / Lapsed
US
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Abrasive articles and method of making
Assignee: Akzo Nobel UK PLC
•
Filing: 1951-10-23
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Granted: 1955-06-21
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Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 James E Price
- 👤 Groves Kenneth Deane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:15
CPC Classifications
C; C08; C08L; C08L61/00; B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344; C08L1/00; C08L61/04; C08L61/06; C08L61/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD OF MAKING A FELT-LIKE COMPACTED FIBROUS PRODUCT WHICH COMPRISES WETTING PARTICLES OF A NONFIBROUS FILLER MATERIAL WITH A LIQUID COMPRISING A PRECONDENSATED OF A THERMOSETTING RESIN, ASSOCIATING THE WET FILLER PARTICLES WITH DISCONTINUOUS COTTON FIBERS HAVING A NON-FIBROUS CELLULOSE ORGANIC ACID ESTER ADHERED TO THEIR SURFACES, HEATING THE MASS OF FIBERS AND FILLER PARTICLES TO A TEMPERATURE AT WHICH THE CELLULOSE ESTER IS RENDERED ADHESIVE, SUBJECTING THE MASS TO PRESSURE WHILE THE ESTER IS IN THE ADHESIVE CONDITION TO OBTAIN A PRODUCT IN WHICH FIBERS ARE BONDED TOGETHER BY THE ESTER AND IN WHICH THE FILLER PARTICLES ARE FIXED IN A CONDITION OF SUBSTANTIALLY UNIFORM DISTRIBUTION BY THE BONDED FIBERS AND BY THE RESIN, COOLING THE PRODUCT, AND HEATING THE PRODUCT AT A TEMPERATURE BELOW THE TEMPERATURE AT WHICH THE ESTER IS RENDERED ADHESIVE TO CONVERT THE RESIN TO INSOLUBLE, THERMOSET CONDITION.
Claim 2
Independent Claim
144 words
A METHOD OF MAKING A FELT-LIKE COMPACTED FIBROUS PRODUCT WHICH COMPRISES WETTING PARTICLES OF A NONFIBROUS FILLER MATERIAL WITH A LIQUID COMPRISING A PRECONDENSATED OF A THERMOSETTING RESIN, ASSOCIATING THE WET FILLER PARTICLES WITH DISCONTINUOUS COTTON FIBERS HAVING A NON-FIBROUS CELLULOSE ORGANIC ACID ESTER ADHERED TO THEIR SURFACES, HEATING THE MASS OF FIBERS AND FILLER PARTICLES TO A TEMPERATURE AT WHICH THE CELLULOSE ESTER IS RENDERED ADHESIVE, SUBJECTING THE MASS TO PRESSURE WHILE THE ESTER IS IN THE ADHESIVE CONDITION TO OBTAIN A PRODUCT IN WHICH FIBERS ARE BONDED TOGETHER BY THE ESTER AND IN WHICH THE FILLER PARTICLES ARE FIXED IN A CONDITION OF SUBSTANTIALLY UNIFORM DISTRIBUTION BY THE BONDED FIBERS AND BY THE RESIN, COOLING THE PRODUCT, AND HEATING THE PRODUCT AT A TEMPERATURE BELOW THE TEMPERATURE AT WHICH THE ESTER IS RENDERED ADHESIVE TO CONVERT THE RESIN TO INSOLUBLE, THERMOSET CONDITION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |