Patent US2627145A successfully refreshed from Google Patents.
US2627145A
Expired / Lapsed
US
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Conformable abrasive-coated sheet material
Assignee: 3M Co
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Filing: 1948-08-13
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Granted: 1953-02-03
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Expires: 1968-08-13
Abstract
No abstract record available.
Inventors
- 👤 Rudolph S Frigstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:20
CPC Classifications
B; B24; B24D; B24D11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A WATERPROOF FLEXIBLE ABRASIVE SHEET MATERIAL OF HIGH INITIAL FLEXIBILITY AND OF HIGH EFFICIENCY IN THE PRESENCE OF WATER, HAVING A DEGREE OF STRETCH AT BREAK IN ANY DIRECTION EQUIVALENT TO AT LEAST ABOUT ONE-THIRD OF THE INITIAL LENGTH AND CAPABLE OF CONFORMING TO IRREGULAR SURFACES BY SUBSTANTIAL UNIVERSAL STRETCHING UNDER TENSION BOTH IN THE DRY STATE AND AFTER PROLONGED IMMERSION IN WATER, SAID SHEET COMPRISING: A MULTILATERALLY STRETCHABLE FIBROUS BASE SHEET CHARACTERIZED BY A PLURALITY OF CROSSING SETS OF CREPING CRINKLES; A RESINOUS IMPREGNATING AND STRENGTHENING AGENT FOR SAID SHEET COMPRISING A THERMOPLASTIC FILM-FORMING WATERPROOF SYNTHETIC RESIN; A RESINOUS BINDER COAT; AND A LAYER OF ABRASIVE GRITS EMBEDDED IN SAID BINDER COAT.
Claim 2
Dependent Claim
113 words
A WATERPROOF FLEXIBLE ABRASIVE SHEET MATERIAL OF HIGH INITIAL FLEXIBILITY AND OF HIGH EFFICIENCY IN THE PRESENCE OF WATER, HAVING A DEGREE OF STRETCH AT BREAK IN ANY DIRECTION EQUIVALENT TO AT LEAST ABOUT ONE-THIRD OF THE INITIAL LENGTH AND CAPABLE OF CONFORMING TO IRREGULAR SURFACES BY SUBSTANTIAL UNIVERSAL STRETCHING UNDER TENSION BOTH IN THE DRY STATE AND AFTER PROLONGED IMMERSION IN WATER, SAID SHEET COMPRISING: A MULTILATERALLY STRETCHABLE FIBROUS BASE SHEET CHARACTERIZED BY A PLURALITY OF CROSSING SETS OF CREPING CRINKLES; A RESINOUS IMPREGNATING AND STRENGTHENING AGENT FOR SAID SHEET COMPRISING A THERMOPLASTIC FILM-FORMING WATERPROOF SYNTHETIC RESIN; A RESINOUS BINDER COAT; AND A LAYER OF ABRASIVE GRITS EMBEDDED IN SAID BINDER COAT.
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) | 1956-02-03 | 1956-08-04 | 1957-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-03 | 1960-08-04 | 1961-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-03 | 1964-08-04 | 1965-02-03 | $7700.00 | Window Closed / Lapsed |