US2961364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bonded fibrous products
Assignee: Rohm and Haas Co
•
Filing: 1954-12-09
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Granted: 1960-11-22
•
Expires: 1974-12-09
Abstract
No abstract record available.
Inventors
- 👤 Smith Arthur Laslett
- 👤 William R Conn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:18
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/128; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS COMPRISING DEPOSITING FIBERS IN RANDOM ARRAY TO FORM A FIBROUS MAT, APPLYING TO THE FIBERS AN AQUEOUS DISPERSION OF POLYVALENT METAL IONS AND A WATERINSOLUBLE COPOLYMER OF MONOETHYLENICALLY UNSATURATED MONOMERIC UNITS COMPRISING FROM 0.5 MOLE PERCENT UP TO BUT NOT OVER 7 MOLE PERCENT OF UNITS CONTAINING -COOH GROUPS, DRYING THE DISPERSION ON THE FIBERS OF THE MAT AT A TEMPERATURE WHICH IS SUFFICIENTLY HIGH TO EFFECT COALESCENCE OF THE COPOLYMER PARTICLES CROSS-LINKED BY THE POLYVALENT METAL DISTRIBUTED SUBSTANTIALLY UNIFORMLY THERETHROUGH WHEREBY FIBERS OF THE MAT ARE BONDED BY THE COALESCED, CROSS-LINKED COPOLYMER.
Claim 2
Dependent Claim
95 words
A PROCESS COMPRISING DEPOSITING FIBERS IN RANDOM ARRAY TO FORM A FIBROUS MAT, APPLYING TO THE FIBERS AN AQUEOUS DISPERSION OF POLYVALENT METAL IONS AND A WATERINSOLUBLE COPOLYMER OF MONOETHYLENICALLY UNSATURATED MONOMERIC UNITS COMPRISING FROM 0.5 MOLE PERCENT UP TO BUT NOT OVER 7 MOLE PERCENT OF UNITS CONTAINING -COOH GROUPS, DRYING THE DISPERSION ON THE FIBERS OF THE MAT AT A TEMPERATURE WHICH IS SUFFICIENTLY HIGH TO EFFECT COALESCENCE OF THE COPOLYMER PARTICLES CROSS-LINKED BY THE POLYVALENT METAL DISTRIBUTED SUBSTANTIALLY UNIFORMLY THERETHROUGH WHEREBY FIBERS OF THE MAT ARE BONDED BY THE COALESCED, CROSS-LINKED COPOLYMER.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |