Patent US3425555A successfully refreshed from Google Patents.
Patent US3344016A successfully refreshed from Google Patents.
US3344016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making beater-saturated water-laid product containing paper-making and textile staple fibers
Assignee: Armstrong World Industries Inc
•
Filing: 1965-03-24
•
Granted: 1967-09-26
•
Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 William A Moggio
- 👤 John M Lesniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:33
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; D21H13/00; D21H13/10; D21H13/36; D21H13/38; D21H13/40; D21H13/42; D21H17/63; D21H17/66; D21H23/00; D21H23/02; D21H23/04; D21H23/06; D21H23/08; D21H23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
THE METHOD OF FORMING A BEATER SATURATED, NONWOVEN TEXTILE SUBSTITUTE WHICH COMPRISES FORMING IN WATER A SLURRY OF PAPERMAKING FIBERS, ADDING ALUM TO SAID SLURRY, ADJUSTING THE PH OF THE ALUM-TREATED SLURRY TO A RANGE OF 6-8 BY ADDING ALKALI THERETO, ADDING A SYNTHETIC RUBBER LATEX IN AN AMOUNT OF 200%-650% BY WEIGHT DRY RUBBER SOLIDS BASED ON THE DRY WEIGHT OF THE PAPERMAKING FIBERS TO THE NEUTRALIZED SLURRY WHEREBY THE SOLIDS CONTENT OF THE BINDER PRECIPITATES, ADDING TO THE RESULINGT SLURRY IN INDIFFERENT ORDER LONG, STAPLE FIBERS IN AN AMOUNT OF 50%-900% BY WEIGHT BASED ON THE DRY WEIGHT OF THE PAPERMAKING FIBERS AND A WATER-SOLUBLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS IN GROUPS I, II, IV, VII, AND VIII OF THE PERIODIC TABLE, ADDING SUFFICIENT ALKALI TO THE SALT-TREATED SLURRY CONTAINING SAID STAPLE FIBERS TO ACHIEVE A PH IN THE RANGE OF 8.5-11.5 TO FORM AN INSOLUBLE HYDROXIDE WITH THE METAL ION FROM THE SALT, AND FORMING A SHEET FROM THE RESULTING SLURRY.
Claim 2
Independent Claim
170 words
THE METHOD OF FORMING A BEATER SATURATED, NONWOVEN TEXTILE SUBSTITUTE WHICH COMPRISES FORMING IN WATER A SLURRY OF PAPERMAKING FIBERS, ADDING ALUM TO SAID SLURRY, ADJUSTING THE PH OF THE ALUM-TREATED SLURRY TO A RANGE OF 6-8 BY ADDING ALKALI THERETO, ADDING A SYNTHETIC RUBBER LATEX IN AN AMOUNT OF 200%-650% BY WEIGHT DRY RUBBER SOLIDS BASED ON THE DRY WEIGHT OF THE PAPERMAKING FIBERS TO THE NEUTRALIZED SLURRY WHEREBY THE SOLIDS CONTENT OF THE BINDER PRECIPITATES, ADDING TO THE RESULINGT SLURRY IN INDIFFERENT ORDER LONG, STAPLE FIBERS IN AN AMOUNT OF 50%-900% BY WEIGHT BASED ON THE DRY WEIGHT OF THE PAPERMAKING FIBERS AND A WATER-SOLUBLE SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS IN GROUPS I, II, IV, VII, AND VIII OF THE PERIODIC TABLE, ADDING SUFFICIENT ALKALI TO THE SALT-TREATED SLURRY CONTAINING SAID STAPLE FIBERS TO ACHIEVE A PH IN THE RANGE OF 8.5-11.5 TO FORM AN INSOLUBLE HYDROXIDE WITH THE METAL ION FROM THE SALT, AND FORMING A SHEET FROM THE RESULTING SLURRY.
References Cited (Backward Citations)
US2375245A
Cited
US3057772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |