US2838890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulosic product
Assignee: Kimberly Clark Corp
•
Filing: 1955-04-18
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Granted: 1958-06-17
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Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 James W Mcintyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:15
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20; B; B24; B24D; B24D11/00; B24D11/001; B24D11/005; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H27/00; D21H5/00; D21H5/02; D21H5/025; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A FLEXIBLE BASE FOR AN ABRASIVE COATED SHEET COMPRISING A PAPER SHEET HAVING A LARGE NUMBER OF RELATIVELY SMALL OPENINGS THROUGHOUT THE SHEET, SAID SHEET HAVING A BASIS WEIGHT OF BETWEEN ABOUT 30 TO 150 POUNDS PER REAM OF 480 SHEETS, 24 BY 36 INCHES, EACH OF THE OPENINGS IN SAID SHEET HAVING AN AREA WITHIN THE RANGE OF FROM ABOUT .003 TO .030 SQUARE INCH AND THE TOTAL AREA OF THE OPENINGS COMPRISING FROM ABOUT 20 TO 55 PERCENT OF THE TOTAL AREA OF SAID SHEET, SAID PERFORATED SHEET BEINH IMPREGNATED WITH A BUTADIENE ACRYLONITRILE ELASTOMER IN AN AMOUNT NOT GREATER THAN ABOUT 100 PERCENT, BY WEIGHT, OF THE BASIS WEIGHT OF THE PAPER SHEET, AND A BARRIER COATING OF A PLASTICIZED VINYL CHLORIDE COVERING SAID PERFORATED SHEET AND EXTENDING THROUGH THE OPENINGS THEREIN TO PROTECTIVELY COVER THE SURFACES OF SAID SHEET AND THE OPENING-DEFINING EDGES THEREINM SAID BARRIER COATING BEING PRESENT IN AN AMOUNT OF FROM ABOUT 2 TO 40 POUNDS PER REAM OF THE PERFORATED PAPER SHEET
Claim 2
Dependent Claim
170 words
A FLEXIBLE BASE FOR AN ABRASIVE COATED SHEET COMPRISING A PAPER SHEET HAVING A LARGE NUMBER OF RELATIVELY SMALL OPENINGS THROUGHOUT THE SHEET, SAID SHEET HAVING A BASIS WEIGHT OF BETWEEN ABOUT 30 TO 150 POUNDS PER REAM OF 480 SHEETS, 24 BY 36 INCHES, EACH OF THE OPENINGS IN SAID SHEET HAVING AN AREA WITHIN THE RANGE OF FROM ABOUT .003 TO .030 SQUARE INCH AND THE TOTAL AREA OF THE OPENINGS COMPRISING FROM ABOUT 20 TO 55 PERCENT OF THE TOTAL AREA OF SAID SHEET, SAID PERFORATED SHEET BEINH IMPREGNATED WITH A BUTADIENE ACRYLONITRILE ELASTOMER IN AN AMOUNT NOT GREATER THAN ABOUT 100 PERCENT, BY WEIGHT, OF THE BASIS WEIGHT OF THE PAPER SHEET, AND A BARRIER COATING OF A PLASTICIZED VINYL CHLORIDE COVERING SAID PERFORATED SHEET AND EXTENDING THROUGH THE OPENINGS THEREIN TO PROTECTIVELY COVER THE SURFACES OF SAID SHEET AND THE OPENING-DEFINING EDGES THEREINM SAID BARRIER COATING BEING PRESENT IN AN AMOUNT OF FROM ABOUT 2 TO 40 POUNDS PER REAM OF THE PERFORATED PAPER SHEET
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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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |