US3039914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a bonded wetformed web and resulting product
Assignee: Arthur D Little Inc
•
Filing: 1959-07-07
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Granted: 1962-06-19
•
Expires: 1979-07-07
Abstract
No abstract record available.
Inventors
- 👤 Peter A Reiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:11
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; D; D21; D21H; D21H13/00; D21H13/10; D21H5/00; D21H5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
PROCESS FOR MAKING A FILTERING WEB WHICH CONSISTS ESSENTIALLY IN PREPARING A MIXTURE OF SUPPORTING FIBERS AND A SURFACTANT IN WATER, ADJUSTING THE PH THEREOF TO BETWEEN 3.5 AND 5.5, ADDING TO SAID MIXTURE A FLOCK OF THERMOPLASTIC FIBERS CUT TO LENGTHS BETWEEN 1/16 INCH AND 1/4 INCH, UNIFORMLY MIXING THE AFORESAID INGREDIENTS WITHOUT SIGNIFICANT BEATING OR FIBER DAMAGE, WHILE PROVIDING AND MAINTAINING A CONSISTENCY BETWEEN AOBUT 0.8% AND 1.5% ADDING THERETO MINERAL FIBERS, AND THROUGHLY MIXING ADJUSTING THE CONSISTENCY OF THE RESULTING MIXTURE TO LESS THAN 0.1%, BY ADDITION OF WATER, FORMING A SHEET FROM THE RESULTING FURNISH ON A PAPER MACHINE AND DRYING THE
Claim 2
Dependent Claim
106 words
PROCESS FOR MAKING A FILTERING WEB WHICH CONSISTS ESSENTIALLY IN PREPARING A MIXTURE OF SUPPORTING FIBERS AND A SURFACTANT IN WATER, ADJUSTING THE PH THEREOF TO BETWEEN 3.5 AND 5.5, ADDING TO SAID MIXTURE A FLOCK OF THERMOPLASTIC FIBERS CUT TO LENGTHS BETWEEN 1/16 INCH AND 1/4 INCH, UNIFORMLY MIXING THE AFORESAID INGREDIENTS WITHOUT SIGNIFICANT BEATING OR FIBER DAMAGE, WHILE PROVIDING AND MAINTAINING A CONSISTENCY BETWEEN AOBUT 0.8% AND 1.5% ADDING THERETO MINERAL FIBERS, AND THROUGHLY MIXING ADJUSTING THE CONSISTENCY OF THE RESULTING MIXTURE TO LESS THAN 0.1%, BY ADDITION OF WATER, FORMING A SHEET FROM THE RESULTING FURNISH ON A PAPER MACHINE AND DRYING THE
References Cited (Backward Citations)
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US1829585A
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US2357392A
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US2593146A
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US2521985A
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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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |