US2880080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced abrasive articles and intermediate products
Assignee: 3M Co
•
Filing: 1955-11-07
•
Granted: 1959-03-31
•
Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Rankin Walter James
- 👤 Barry F Tungseth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L; C08L67/00; C08L67/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A REINFORCED ABRASIVE ARTICLE COMPRISING AT LEAST ONE LAYER OF A PREFORMED SELF-SUPPORTING FELTED REINFORCING MAT, ABRASIVE GRAINS UNIFORMLY ASSOCIATED WITH SAID MAT AND SOLID WATERPROOF RESINOUS BINDER MATERIAL UNIFYING SAID ARTICLE, SAID MAT BEING COMPRISED OF A RANDOMLY ORIENTED UNIFORM MIXTURE OF 20-80 PERCENT BY WEIGHT OF SHORT BUNDLES OF ALIGNED GLASS FIBERS SUBSTANTIALLY COMPLETELY ENCASED IN A SHEATH OF FLEXIBLE FLIM-FORMING POLYMER AND CORRESPONDINGLY 80-20 PERCENT BY WEIGHT OF SHORT MOISTURE-SWELLABLE IMPREGNATION RESISTANT COTTON THREAD SEGMENTS9
References Cited (Backward Citations)
US2284716A
Cited
US2356866A
Cited
US2682735A
Cited
US2711365A
Cited
US2703765A
Cited
US2779668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |