US2876087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated abrasives
Assignee: Saint Gobain Abrasives Inc
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Filing: 1957-02-27
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Granted: 1959-03-03
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Charles S Webber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:35
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/04; C09D161/06; B; B24; B24D; B24D11/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A COATED ABRASIVE ARTICLE COMPRISING ABRASIVE GRAINS BONDED TO A BACKING BY A COATING COMPRISING A CURED RESIN FORMED FROM A MIXTURE OF PHENOL FORMALDEHYDE RESIN AND O-CHLOROPHENOL FORMALDEHYDE RESIN, THJE O-CHLOROPHENOL TO PHENOL MOLAL RATIO BEING IN THE RANGE OF APPROXIMATELY 0.05 MOL TO 0.4 MOL OF O-CHLOROPHENOL TO ONE MOL OF PHENOL.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |