US2807543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing fiber dispersions containing an elastomeric binder
Assignee: Individual
•
Filing: 1954-01-18
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Granted: 1957-09-24
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Expires: 1974-01-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Mcquiston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:28
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/006; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; 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
92 words
A METHOD OF MAKING AQUEOUS FIBRO- COLLOIDAL DISPERSIONS COMPRISING FORMING A DISPERSION OF FIBERS IN WQATER SUBSTANTIALLY FREE FROM ALUMINUM SALTS ALKALIZED TO A PH VALUE OF BETWEEN 8.8 AND 10: ADMIXING A DISPERSION OF COLLOIDAL ELASTROMETRIC BINDER PARTICLES TO FORM A MIXED DISPERSION: ADDING A CHROMIC SALT IN AN AMOUNT SUFFICIENT TO REDUCE THE PH OF THE SYSTEM TO BETWEEN 5 AND 5.6 TO EFFECT A GRADUAL PEPTIZED DEPOSITION OF THE DISPERSED COLLOIDS ON THE FIBER AND THEN ADDING AN ACIDIFYING AGENT TO REDUCE THE PH TO BETWEEN 4.2 AND 5.2.
Claim 2
Independent Claim
92 words
A METHOD OF MAKING AQUEOUS FIBRO- COLLOIDAL DISPERSIONS COMPRISING FORMING A DISPERSION OF FIBERS IN WQATER SUBSTANTIALLY FREE FROM ALUMINUM SALTS ALKALIZED TO A PH VALUE OF BETWEEN 8.8 AND 10: ADMIXING A DISPERSION OF COLLOIDAL ELASTROMETRIC BINDER PARTICLES TO FORM A MIXED DISPERSION: ADDING A CHROMIC SALT IN AN AMOUNT SUFFICIENT TO REDUCE THE PH OF THE SYSTEM TO BETWEEN 5 AND 5.6 TO EFFECT A GRADUAL PEPTIZED DEPOSITION OF THE DISPERSED COLLOIDS ON THE FIBER AND THEN ADDING AN ACIDIFYING AGENT TO REDUCE THE PH TO BETWEEN 4.2 AND 5.2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |