US3014835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-laid inorgainic product
Assignee: Armstrong World Industries Inc
•
Filing: 1957-12-23
•
Granted: 1961-12-26
•
Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Jr David A Feigley
- 👤 Jr Leonard N Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/09; C; C04; C04B; C04B30/00; C04B30/02; D21H17/14; D21H17/63; D21H17/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE PROCESS OF MAKING A WATER-LAID PRODUCT WHICH COMPRISES FORMING WITH WATER A SLURRY OF WATER-INSOLUBLE, INORGANIC PARTICLES, TREATING SAID PARTICLES BY ADDING TO SAID SLURRY A SALT CONTAINING A POLYVALENT METAL ION HAVING A CHARGE OF AT LEAST +3, ADDING TO SAID TREATED SLURRY AN ADDITIVE CONSISTING ESSENTIALLY OF A WATER-SOLUBLE SALT OF AN ACYCLIC, ALIPHATIC, ORGANIC COMPOUND HAVING AT LEAST 10 CARBON ATOMS AND CONTAINING AT LEAST ONE CARBOXYLIC ACID GROUP IN AN AMOUNT OF ABOUT 0.2-20% BY WEIGHT BASED ON THE DRY WEIGHT OF SAID PARTICLES, AGITATING THE MIXTURE OF SAID SLURRY AND SAID COMPOUND TO CAUSE SAID COMPOUND TO REACT WITH THE SURFACES OF SAID PARTICLES, AND FORMING A WATER-LAID PRODUCT, THE RESULTING SLURRY BY DRAINING THE WATER THEREFROM.
Claim 2
Dependent Claim
123 words
THE PROCESS OF MAKING A WATER-LAID PRODUCT WHICH COMPRISES FORMING WITH WATER A SLURRY OF WATER-INSOLUBLE, INORGANIC PARTICLES, TREATING SAID PARTICLES BY ADDING TO SAID SLURRY A SALT CONTAINING A POLYVALENT METAL ION HAVING A CHARGE OF AT LEAST +3, ADDING TO SAID TREATED SLURRY AN ADDITIVE CONSISTING ESSENTIALLY OF A WATER-SOLUBLE SALT OF AN ACYCLIC, ALIPHATIC, ORGANIC COMPOUND HAVING AT LEAST 10 CARBON ATOMS AND CONTAINING AT LEAST ONE CARBOXYLIC ACID GROUP IN AN AMOUNT OF ABOUT 0.2-20% BY WEIGHT BASED ON THE DRY WEIGHT OF SAID PARTICLES, AGITATING THE MIXTURE OF SAID SLURRY AND SAID COMPOUND TO CAUSE SAID COMPOUND TO REACT WITH THE SURFACES OF SAID PARTICLES, AND FORMING A WATER-LAID PRODUCT, THE RESULTING SLURRY BY DRAINING THE WATER THEREFROM.
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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) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |