US2589652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin, abrasive article incorporating same, and method of making same
Assignee: Allison Co
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Filing: 1950-03-20
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Granted: 1952-03-18
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Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 Hugh V Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
AN ABRASIVE ARTICLE COMPRISING A BACKING SHEET AND ABRASIVE GRAINS BONDED TO A SIDE OF THEE SHEET BY A FINALLY CURED RESIN CONSSISTING OF A REACTION PRODUCT OF DIMETHYL TEREPHTHALATE, PENTAERYTHRITOL, METHOXY POLYGLYCOL AND LEAD DIOXIDE IN PROPORTIONS OF 400 GRAMS OF DIMETHYL TEREPHTHALATE, FROM 80 TO 200 GRAMS OF PENTAERYTHRITOL, FROM 40 TO 200 GRAMS OF LEAD METHOXY POLYGLYCOL AND FROM .4 TO 4 GRAMS OF LEAD DIOXIDE REACTED AT A TEMPERATURE ABOVE 180* C. AND FINALLY CURED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |