US2810644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper products and method of making the same
Assignee: Akzo Nobel UK PLC
•
Filing: 1950-02-09
•
Granted: 1957-10-22
•
Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Howard E Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:10
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/24; D21H17/25; D21H17/26; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AS A NEW ARTICLE OF MANUFACTURE, A POROUS PAPER PRODUCT COMPRISING A MULITPLICITY OF RANDOMLY INTERMINGLED DISCONTINUOUS FIBERS ALL OF WHICH ARE ORGANIC NON-FIBRILLATING, EXTRUDED SYNTHETIC, ARTIFICIALLY FORMED FIBERS HAVING A LENGTH OF FROM ONE-THIRTY SECOND TO THIRTEEN-THIRTY SECONDS OF AN INCH AND BONDED AT THEIR POINTS OF INTERSECTION IN THE PAPER BY A WATER-INSOLUBLE, ALKALISOLUBLE HYDROXYETHYL CELLULOSE WHICH OCCURS IN THE PAPER IN THE FORM OF DISCRETE PARTICLES OF LARGER THAN COLLOIDAL SIZE.
Claim 2
Dependent Claim
74 words
AS A NEW ARTICLE OF MANUFACTURE, A POROUS PAPER PRODUCT COMPRISING A MULITPLICITY OF RANDOMLY INTERMINGLED DISCONTINUOUS FIBERS ALL OF WHICH ARE ORGANIC NON-FIBRILLATING, EXTRUDED SYNTHETIC, ARTIFICIALLY FORMED FIBERS HAVING A LENGTH OF FROM ONE-THIRTY SECOND TO THIRTEEN-THIRTY SECONDS OF AN INCH AND BONDED AT THEIR POINTS OF INTERSECTION IN THE PAPER BY A WATER-INSOLUBLE, ALKALISOLUBLE HYDROXYETHYL CELLULOSE WHICH OCCURS IN THE PAPER IN THE FORM OF DISCRETE PARTICLES OF LARGER THAN COLLOIDAL SIZE.
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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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |