US3122447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonded nonwoven fabrics and methods of making the same
Assignee: Johnson and Johnson
•
Filing: 1962-11-21
•
Granted: 1964-02-25
•
Expires: 1982-11-21
Abstract
No abstract record available.
Inventors
- 👤 Fred H Sexsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/587; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31935; Y10T428/31971; Y10T442/00; Y10T442/20; Y10T442/2484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF FORMING A SOFT AND STRONG NONWOVEN FABRIC HAVING IMPROVED WET STRENGTH WHICH COMPRISES BONDING A LOOSELY ASSEMBLED WEB OF OVERLAPPING, INTERSECTING FIBERS OF WHICH AT LEAST ABOUT 50% BY WEIGHT ARE CELLULOSE FIBERS WITH A BINDER MATERIAL COMPRISING A DISPERSION OF A VINYL ACETATE RESIN POLYMER, AND, DISPERSED IN SAID VINYL ACETATE RESIN POLYMER DISPERSION AS A WET STRENGTH IMPROVER THEREFOR, A POLYALKYLENE IMINE IN AN
Claim 2
Independent Claim
69 words
A METHOD OF FORMING A SOFT AND STRONG NONWOVEN FABRIC HAVING IMPROVED WET STRENGTH WHICH COMPRISES BONDING A LOOSELY ASSEMBLED WEB OF OVERLAPPING, INTERSECTING FIBERS OF WHICH AT LEAST ABOUT 50% BY WEIGHT ARE CELLULOSE FIBERS WITH A BINDER MATERIAL COMPRISING A DISPERSION OF A VINYL ACETATE RESIN POLYMER, AND, DISPERSED IN SAID VINYL ACETATE RESIN POLYMER DISPERSION AS A WET STRENGTH IMPROVER THEREFOR, A POLYALKYLENE IMINE IN AN
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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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |