US2873259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbery flexible closed cell product
Assignee: Armstrong World Industries Inc
•
Filing: 1957-01-17
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Granted: 1959-02-10
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Expires: 1977-01-17
Abstract
No abstract record available.
Inventors
- 👤 Clark Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:46
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/104; C08J9/105; C08J9/0061; C08L; C08L21/00; C08J2205/00; C08J2205/04; C08J2205/052; C08J2205/06; C08J2309/00; C08J2309/06; C08J2455/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A COMPOSITION OF MATTER COMPRISING A FLEXIBLE CELLULAR SUBSTANTIALLY CLOSED CELL BLEND PREPARED BY THE PROCESS OF BLENDING RELATIVE PROPORTIONS OF ABOUT 100 PARTS BY WEIGHT OF A RUBBERY BUTADIENE-STYRENE COPOLYMER, ABOUT 60-115 PARTS BY WEIGHT OF A RUBBERY BUTADIENE-ACRYLONITRILE COPOLYMER, ABOUT 35-75 PARTS BY WEIGHT OF POLYSTYRENE, AND ABOUT 20-30 PARTS BY WEIGHT OF A VINYL CHLORIDE POLYMER, SAID CELLS BEING FORMED BY THE THERMAL DECOMPOSITION OF P,P'' -OXYBIS (BENZENE SULFONYL HYDRAZIDE) AT A TEMPERATURE IN THE RANGE OF ABOUT 250*-330*F.
Claim 2
Dependent Claim
82 words
A COMPOSITION OF MATTER COMPRISING A FLEXIBLE CELLULAR SUBSTANTIALLY CLOSED CELL BLEND PREPARED BY THE PROCESS OF BLENDING RELATIVE PROPORTIONS OF ABOUT 100 PARTS BY WEIGHT OF A RUBBERY BUTADIENE-STYRENE COPOLYMER, ABOUT 60-115 PARTS BY WEIGHT OF A RUBBERY BUTADIENE-ACRYLONITRILE COPOLYMER, ABOUT 35-75 PARTS BY WEIGHT OF POLYSTYRENE, AND ABOUT 20-30 PARTS BY WEIGHT OF A VINYL CHLORIDE POLYMER, SAID CELLS BEING FORMED BY THE THERMAL DECOMPOSITION OF P,P'' -OXYBIS (BENZENE SULFONYL HYDRAZIDE) AT A TEMPERATURE IN THE RANGE OF ABOUT 250*-330*F.
References Cited (Backward Citations)
US2739082A
Cited
US2741624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |