Patent US2640000A successfully refreshed from Google Patents.
US2640000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproofing method and product
Assignee: Diamond Shamrock Corp
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Filing: 1947-06-07
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Granted: 1953-05-26
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Expires: 1967-06-07
Abstract
No abstract record available.
Inventors
- 👤 Leslie P Seyb
- 👤 Clifford A Neros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:01
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0036; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/47; D06M13/00; D06M13/08; D06M13/10; D06M13/224; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/07; D06M15/09; D06M15/19; D06M15/21; D06M15/227; D06M15/233; D06M15/263; D06M15/267; D06M15/327; D06M15/333; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T428/31851; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2164; Y10T442/2205; Y10T442/2631; Y10T442/2656
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A FIBROUS CELLULOSIC MATERIAL OF SUBSTANTIAL FLAME-RETARDANT PROPERTIES COMPRISING, IN COMBINATION, A FIBROUS CELLULOSIC BASE, A NON-HALOGENATED INORGANIC, FLAME-RETARDANT SUBSTANCE DEPOSITED THEREON, A RESINOUS, ORGANIC, NON-HALOGENATED HEAT-DECOMPOSABLE, FILM-FORMING SUBSTANCE OVERLAYING SAID INORGANIC FLAME-RETARDANT SUBSTANCE DEPOSITED UPON SAID CELLULOSIC BASE, AND A HIGHLY CHLORINATED ORGANIC FLAME-RETARDANT SUBSTANCE HAVING A LOW VAPOR PRESSURE, CAPABLE OF RELEASING SUBSTANTIAL AMOUNT OF HYDROGEN CHLORIDE AT FLAME TEMPERATURES, DEPOSITED UPON SAID FILM-FORMING SUBSTANCE SO AS TO BE MAINTAINED OUT OF CONTACT WITH SAID CELLULOSIC BASE AND SAID INORGANIC FLAME-RETARDANT SUBSTANCE BY MEANS OF SAID FILM-FORMING SUBSTANCE.
Claim 2
Dependent Claim
90 words
A FIBROUS CELLULOSIC MATERIAL OF SUBSTANTIAL FLAME-RETARDANT PROPERTIES COMPRISING, IN COMBINATION, A FIBROUS CELLULOSIC BASE, A NON-HALOGENATED INORGANIC, FLAME-RETARDANT SUBSTANCE DEPOSITED THEREON, A RESINOUS, ORGANIC, NON-HALOGENATED HEAT-DECOMPOSABLE, FILM-FORMING SUBSTANCE OVERLAYING SAID INORGANIC FLAME-RETARDANT SUBSTANCE DEPOSITED UPON SAID CELLULOSIC BASE, AND A HIGHLY CHLORINATED ORGANIC FLAME-RETARDANT SUBSTANCE HAVING A LOW VAPOR PRESSURE, CAPABLE OF RELEASING SUBSTANTIAL AMOUNT OF HYDROGEN CHLORIDE AT FLAME TEMPERATURES, DEPOSITED UPON SAID FILM-FORMING SUBSTANCE SO AS TO BE MAINTAINED OUT OF CONTACT WITH SAID CELLULOSIC BASE AND SAID INORGANIC FLAME-RETARDANT SUBSTANCE BY MEANS OF SAID FILM-FORMING SUBSTANCE.
References Cited (Backward Citations)
US1860506A
Cited
US2010015A
Cited
US2178625A
Cited
US2428716A
Cited
GB552909A
Cited
US2380775A
Cited
US2424386A
Cited
US2416447A
Cited
US2427997A
Cited
US2431001A
Cited
US2494391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |