Patent US3338846A successfully refreshed from Google Patents.
US3338846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular plastic compositions
Assignee: Georgia-Pacific LLC
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Filing: 1964-05-01
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Granted: 1967-08-29
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Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Oskar E H Klopfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; Y; Y10; Y10S; Y10S521/00; Y10S521/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR THE PREPARATION OF A CELLULAR PLASTIC PRODUCT, SAID PROCESS COMPRISING HEATING AN EXPANDABLE PLASTIC COMPOSITION COMPRISING A POLYVINYL HALIDE AND A MONOMERIC URETHANE OF A MONOHYDRIC SATURATED TERTIARY ALCOHOL; SAID ALCOHOL HAVING FROM 4 TO ABOUT 8 CARBON ATOMS, AND BEING FREE OF ACTIVE HYDROGENS OTHER THAN THE HYDROGEN IN THE HYDROXY RADICAL OF SAID ALCOHOL; SAID URETHANE HAVING A DECOMPOSITION TEMPERATURE SUCH THAT, AT SAID DECOMPOSITION TEMPERATURE, SAID URETHANE DECOMPOSES INTO AN AMINE, AN ISOOLEFIN, AND CARBON DIOXIDE; SAID HEATING BEING CONDUCTED AT A REACTION TEMPERATURE SUFFICIENT TO (1) DCOMPOSE SAID URETHANE INTO SAID AMINE, ISOOLEFIN AND CARBON DIOXIDE, AND (2) VOLATILIZE SAID ISOOLEFIN.
Claim 2
Dependent Claim
108 words
A PROCESS FOR THE PREPARATION OF A CELLULAR PLASTIC PRODUCT, SAID PROCESS COMPRISING HEATING AN EXPANDABLE PLASTIC COMPOSITION COMPRISING A POLYVINYL HALIDE AND A MONOMERIC URETHANE OF A MONOHYDRIC SATURATED TERTIARY ALCOHOL; SAID ALCOHOL HAVING FROM 4 TO ABOUT 8 CARBON ATOMS, AND BEING FREE OF ACTIVE HYDROGENS OTHER THAN THE HYDROGEN IN THE HYDROXY RADICAL OF SAID ALCOHOL; SAID URETHANE HAVING A DECOMPOSITION TEMPERATURE SUCH THAT, AT SAID DECOMPOSITION TEMPERATURE, SAID URETHANE DECOMPOSES INTO AN AMINE, AN ISOOLEFIN, AND CARBON DIOXIDE; SAID HEATING BEING CONDUCTED AT A REACTION TEMPERATURE SUFFICIENT TO (1) DCOMPOSE SAID URETHANE INTO SAID AMINE, ISOOLEFIN AND CARBON DIOXIDE, AND (2) VOLATILIZE SAID ISOOLEFIN.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |