Patent US3247015A successfully refreshed from Google Patents.
US3247015A
Expired / Lapsed
US
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Flameproofing of textile materials
Assignee: Hooker Chemical Corp
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Filing: 1961-09-26
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Granted: 1966-04-19
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Richard F Zimmerman
- 👤 Paul E Hoch
- 👤 George M Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:56
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; C; C08; C08G; C08G79/00; C08G79/02; C08G79/06; D06M15/39; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268; Y10T442/2689
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR PREPARING A FLAME-RETARDENT CELLULOSIC MATERIAL WHICH COMPRISES IMPREGNATING THE CELLULOSIC MATERIAL WITH AN AQUEOUS-RESIN FORMING SOLUTION WHICH COMPRISES: (1) A TETRAKIS (A-HYDROXYORGANO) PHOSPHONIUM CHLORIDE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
31 words
A PROCESS FOR PREPARING A FLAME-RETARDENT CELLULOSIC MATERIAL WHICH COMPRISES IMPREGNATING THE CELLULOSIC MATERIAL WITH AN AQUEOUS-RESIN FORMING SOLUTION WHICH COMPRISES: (1) A TETRAKIS (A-HYDROXYORGANO) PHOSPHONIUM CHLORIDE COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2200931A
Cited
US2326727A
Cited
US2415113A
Cited
US2809941A
Cited
US2846337A
Cited
US3101279A
Cited
US3101278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |