US2985540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of cellulosic product
Assignee: Kimberly Clark Corp
•
Filing: 1958-05-19
•
Granted: 1961-05-23
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Leroy J Goldbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0015; D06N3/0056; D06N3/0059; D06N3/04; D06N3/06; D06N3/10; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF PREPARING A FIRE-RESISTANT NON-WOVEN WEB WHICH COMPRISES IMPREGNATING A FIBROUS NON-WOVEN WEB STRUCTURE CONSISTING OF A BLEND OF ABOUT 10-80% CELLULOSIC FIBERS AND ABOUT 90-20% SYNTHETIC NON-CELLULOSIC FIBERS WITH AN AQUEOUS SUSPENSION COMPRISING A MIXTURE OF AN ELASTOMERIC CHLORIDE-FREE POLYMER LATEX AND A DISPERSION OF ANTIMONY TRIOXIDE, THE ANTIMONY TRIOXIDE SOLIDS AMOUNTING TO AT LEAST ABOUT 15% OF THE DRY WEIGHT OF THE ELASTOMERIC POLYMER, SUBSTANTIALLY CURING THE IMPREGNATED WEB, AND THEN COATING AT LEAST ONE SIDE OF THE IMPREGNATED WEB WITH A CHLORIDE-CONTAINING SYNTHETIC POLYMER HAVING A CHLORIDE CONTENT OF AT LEAST ABOUT 8% ON A SOLIDS BASIS, SAID CHLORIDE-CONTAINING SYNTHETIC POLYMER BEING FORMED PRIMARILY OF MONOMERS FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE.
Claim 2
Independent Claim
121 words
THE METHOD OF PREPARING A FIRE-RESISTANT NON-WOVEN WEB WHICH COMPRISES IMPREGNATING A FIBROUS NON-WOVEN WEB STRUCTURE CONSISTING OF A BLEND OF ABOUT 10-80% CELLULOSIC FIBERS AND ABOUT 90-20% SYNTHETIC NON-CELLULOSIC FIBERS WITH AN AQUEOUS SUSPENSION COMPRISING A MIXTURE OF AN ELASTOMERIC CHLORIDE-FREE POLYMER LATEX AND A DISPERSION OF ANTIMONY TRIOXIDE, THE ANTIMONY TRIOXIDE SOLIDS AMOUNTING TO AT LEAST ABOUT 15% OF THE DRY WEIGHT OF THE ELASTOMERIC POLYMER, SUBSTANTIALLY CURING THE IMPREGNATED WEB, AND THEN COATING AT LEAST ONE SIDE OF THE IMPREGNATED WEB WITH A CHLORIDE-CONTAINING SYNTHETIC POLYMER HAVING A CHLORIDE CONTENT OF AT LEAST ABOUT 8% ON A SOLIDS BASIS, SAID CHLORIDE-CONTAINING SYNTHETIC POLYMER BEING FORMED PRIMARILY OF MONOMERS FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE.
References Cited (Backward Citations)
US1885870A
Cited
US2395922A
Cited
US2640000A
Cited
US2520103A
Cited
US2658880A
Cited
US2707157A
Cited
US2795524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |