US2911322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field treatment for making cellulosic fabrics flameproof and resistant to certain chemical warfare gases
Assignee: Individual
•
Filing: 1957-10-29
•
Granted: 1959-11-03
•
Expires: 1977-10-29
Abstract
No abstract record available.
Inventors
- 👤 Klein Elias
- 👤 Jeremiah W Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:27
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A PROCESS SUITABLE FOR USE BY TROOPS IN THE FIELD, FOR RENDERING FABRIC FLAMEPROOF AND RESISTANT TO CHEMICAL WARFARE AGENTS COMPRISING IMPREGNATING SAID FABRIC WITH A SOLUTION CONSISTING ESSENTIALLY OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, A METHYLOL MELAMINE, AND AMMONIUM HYDROXIDE, AIR DRYING SAID FABRIC, THEREAFTER INPREGNATING SAID FABRIC IN AN AQUEOUS SUSPENSION COMPRISING A VINYL ACETATE-CROONIC ACID COPOLYMER AND ACTIVATED CARBON, AND AIR DRYING SAID FABRIC.
References Cited (Backward Citations)
GB575379A
Cited
US2810701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |