US3645814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing resin treated cotton batting products wherein the density of portions of the product can be varied to meet end use requirements
Assignee: United States Department of Agriculture
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Filing: 1969-10-10
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Granted: 1972-02-29
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Expires: 1989-10-10
Abstract
Abstract Variations in density, flame retardancy, resiliency, dimensional stability, coherence, integrity, and moldability are imparted to fibrous cellulosic batting upon treatment wherein the batting is impregnated with aqueous mixtures containing certain combinations of thermoplastic and thermosetting resins selected for their compatibility with each other and with such additives as urea phosphate complexes, borated urea-formaldehyde, diammonium phosphate, or boron containing organic or inorganic salts, by changes in the relative ratio of thermoplastic to thermosetting resin components.
Inventors
- 👤 Nestor B Knoepfler
- 👤 Paul A Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:52
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B7/00; B32B7/02; D; D04; D04H; D04H1/00; D04H1/02; D04H1/40; D04H1/42; D04H1/425; D04H1/58; D04H1/593; D04H1/64; D04H1/645; D04H1/70; D04H1/74; B32B38/00; B32B2038/0052; B32B2038/0076; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/06; B32B2262/062; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2309/00; B32B2309/02
Claims Analysis
Total Claims: 0
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |