US2649386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated paper and method for making same
Assignee: North American Paper Process Co Inc
•
Filing: 1948-02-21
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Granted: 1953-08-18
•
Expires: 1968-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul A Snowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:33
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/56; D21H23/58; D21H5/00; D21H5/0005; D21H5/0025; D21H5/003; D21H5/0032; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/24802; Y10T428/24934
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
THE METHOD FOR COATING PAPER WITH A DISCONTINUOUS COATING OF A SUBSTANTIALLY UNIFORM PATTERN WHICH CONSISTS IN: SUBJECTING A TRAVELLING WEB OF PAPER TO PRESSURE BETWEEN A BACKING AND A COATING ROLL, THE LATTER HAVING A PLURALITY OF MINUTE DEPRESSIONS FORMED IN THE SURFACE THEREOF IN A UNIFORM PATTERN, SAID COATING ROLL HAVING A COATING MIX CONTINUOUSLY APPLIED THERETO, THE COATING MIX BEING REMOVED FROM THE UNDEPRESSED AREAS OF THE COATING ROLL BUT BEING RETAINED IN THE MINUTE DEPRESSIONS UNTIL DEPOSITED ON THE WEB IN SEPARATE MINUTE MOUNDS; THEREAFTER DEHYDRATING THE SEPARATE MINUTE MOUNDS SO APPLIED TO THE PAPER TO SOLIDIFY SAME THEREBY TO MAINTAIN THE INDIVIDUALITY OF SAID MOUNDS WHEREBY COALESCENCE THEREOF IS PREVENTED; AND THEN SUBJECTING THE WEB OF PAPER TO PRESSURE BETWEEN CALENDER ROLLS FOR SUBSTANTIALLY LEVELLING THE UPPER SURFACES OF THE MOUNDS.
Claim 2
Independent Claim
136 words
THE METHOD FOR COATING PAPER WITH A DISCONTINUOUS COATING OF A SUBSTANTIALLY UNIFORM PATTERN WHICH CONSISTS IN: SUBJECTING A TRAVELLING WEB OF PAPER TO PRESSURE BETWEEN A BACKING AND A COATING ROLL, THE LATTER HAVING A PLURALITY OF MINUTE DEPRESSIONS FORMED IN THE SURFACE THEREOF IN A UNIFORM PATTERN, SAID COATING ROLL HAVING A COATING MIX CONTINUOUSLY APPLIED THERETO, THE COATING MIX BEING REMOVED FROM THE UNDEPRESSED AREAS OF THE COATING ROLL BUT BEING RETAINED IN THE MINUTE DEPRESSIONS UNTIL DEPOSITED ON THE WEB IN SEPARATE MINUTE MOUNDS; THEREAFTER DEHYDRATING THE SEPARATE MINUTE MOUNDS SO APPLIED TO THE PAPER TO SOLIDIFY SAME THEREBY TO MAINTAIN THE INDIVIDUALITY OF SAID MOUNDS WHEREBY COALESCENCE THEREOF IS PREVENTED; AND THEN SUBJECTING THE WEB OF PAPER TO PRESSURE BETWEEN CALENDER ROLLS FOR SUBSTANTIALLY LEVELLING THE UPPER SURFACES OF THE MOUNDS.
Claim 3
Dependent Claim
156 words
A COATED FIBROUS SHEET PRODUCT COMPRISING A SHEET OF PAPER-LIKE SUBSTANCE HAVING A MINERAL COATING MATERIAL DISPOSED ON AT LEAST ONE SIDE THEREOF SUCH SHEET NORMALLY BEING OF VARYING THICKNESS AND THUS HAVING AN UNDULATING SURFACE WITH SOME AREAS THEREOF POSITIONED HIGHER THAN OTHERS RELATIVE TO A CENTRAL PLANE OF THE SHEET, THE COATING BEING CHARACTERIZED BY A PLURALITY OF MINUTE FINE AREAS WHICH ARE COATED BY MINERAL COATING MATERIAL IN THE SHAPE OF FINE MOUNDS, SUCH COATED AREAS AND MOUNDS BEING SEPARATED BY MINUTE AREAS WHICH ARE UNCOATED, THE COATING BEING IN A DISCONTINUOUS FORM ACCORDING TO A UNIFORM PREDETERMINED PATTERN, THE FINE MOUNDS BEING IMPACTED INTO THE PAPER, THE COATING MATERIAL UPON THE RELATIVELY HIGHER PORTIONS OF THE FIBROUS SHEET BEING IMPACTED THEREIN TO A GREATER EXTENT THAN THE COATING MATERIAL ON THE RELATIVELY LOWER AREAS OF THE SHEET, THE UPPER AREAS OF THE COATING MATERIAL BEING THUS PRESSED TO A SUBSTANTIALLY COMMON LEVEL.
Claim 4
Dependent Claim
156 words
A COATED FIBROUS SHEET PRODUCT COMPRISING A SHEET OF PAPER-LIKE SUBSTANCE HAVING A MINERAL COATING MATERIAL DISPOSED ON AT LEAST ONE SIDE THEREOF SUCH SHEET NORMALLY BEING OF VARYING THICKNESS AND THUS HAVING AN UNDULATING SURFACE WITH SOME AREAS THEREOF POSITIONED HIGHER THAN OTHERS RELATIVE TO A CENTRAL PLANE OF THE SHEET, THE COATING BEING CHARACTERIZED BY A PLURALITY OF MINUTE FINE AREAS WHICH ARE COATED BY MINERAL COATING MATERIAL IN THE SHAPE OF FINE MOUNDS, SUCH COATED AREAS AND MOUNDS BEING SEPARATED BY MINUTE AREAS WHICH ARE UNCOATED, THE COATING BEING IN A DISCONTINUOUS FORM ACCORDING TO A UNIFORM PREDETERMINED PATTERN, THE FINE MOUNDS BEING IMPACTED INTO THE PAPER, THE COATING MATERIAL UPON THE RELATIVELY HIGHER PORTIONS OF THE FIBROUS SHEET BEING IMPACTED THEREIN TO A GREATER EXTENT THAN THE COATING MATERIAL ON THE RELATIVELY LOWER AREAS OF THE SHEET, THE UPPER AREAS OF THE COATING MATERIAL BEING THUS PRESSED TO A SUBSTANTIALLY COMMON LEVEL.
References Cited (Backward Citations)
US1502003A
Cited
US1790822A
Cited
US1911592A
Cited
US1695437A
Cited
US1623280A
Cited
US1882090A
Cited
US1877512A
Cited
US1921369A
Cited
US1913329A
Cited
US2023175A
Cited
US2032211A
Cited
US2245014A
Cited
US2229620A
Cited
US2378113A
Cited
US2396946A
Cited
US2417009A
Cited
US2304818A
Cited
US2429314A
Cited
US2406287A
Cited
US2506153A
Cited
US2589302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |