US2962415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Specialty papers containing a resin dispersant and retention aid and process for producing the same
Assignee: Hurlbut Paper Co
•
Filing: 1956-03-05
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Granted: 1960-11-29
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Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Hanns F Arledter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H13/00; D21H13/36; D21H13/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A WATER-LAID SPECIALITY PAPER HAVING RESIN POWDER UNIFORMLY AND FREELY DISTRIBUTED IN THE INTERSTICES OF THE PAPER CONSISTING OF AN INTERFELTED FIBROUS WEB CONTAINING FROM ABOUT 30% TO ABOUT 70% BY WEIGHT OF RESIN POWDER, FROM ABOUT 70% TO ABOUT 30% BY WEIGHT RESPECTIVELY OF COARSE FIBERS HAVING A DIAMETER GREATER THAN 2 MICRONS, AND FROM ABOUT 1% TO ABOUT 20% BY WEIGHT BASED ON THE WEIGHT OF THE COARSE FIBERS OF FINE SILICEOUS FIBERS HAVING A DIAMETER LESS THAN 2 MICRONS.
Claim 2
Dependent Claim
82 words
A WATER-LAID SPECIALITY PAPER HAVING RESIN POWDER UNIFORMLY AND FREELY DISTRIBUTED IN THE INTERSTICES OF THE PAPER CONSISTING OF AN INTERFELTED FIBROUS WEB CONTAINING FROM ABOUT 30% TO ABOUT 70% BY WEIGHT OF RESIN POWDER, FROM ABOUT 70% TO ABOUT 30% BY WEIGHT RESPECTIVELY OF COARSE FIBERS HAVING A DIAMETER GREATER THAN 2 MICRONS, AND FROM ABOUT 1% TO ABOUT 20% BY WEIGHT BASED ON THE WEIGHT OF THE COARSE FIBERS OF FINE SILICEOUS FIBERS HAVING A DIAMETER LESS THAN 2 MICRONS.
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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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |