Patent US3243483A successfully refreshed from Google Patents.
US3243483A
Expired / Lapsed
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Method and apparatus for incorporating solid bodies into thermoplastic compositions
Assignee: Dow Chemical Co
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Filing: 1961-06-16
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Granted: 1966-03-29
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Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
- 👤 Stepohen V T Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:49
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/465; B29C48/395; B29C48/03; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF INCORPORATING INFUSIBLE(MATERIAL) INTO AN EXTRUDABLE EXPANSIBLE THERMOPLASTIC SYNTHETIC RESINOUS COMPOSITION COMPRISING: PREPARING A HEAT PLASTIFIED EXTRUDABLE MASS OF THE THERMOPLASTIC RESINOUS COMPOSITION, CONTINUOUSLY FORWARDING AND DIVIDING SAID MASS INTO AT LEAST TWO GENERALLY OPPOSED PORTIONS, ADDING BETWEEN SAID OPPOSED PORTIONS AN INFUSIBLE ADDITIVE MATERIAL, CONVERGING SAID GENERALLY OPPOSED PORTIONS TO INTIMATELY CONTACT SAID ADDITIVE FORMING A LAMINATE HAVING THE ADDITIVE MATERIAL POSITIONED BETWEEN LAYERS OF THE RESINOUS COMPOSITION AND SUBSEQUENTLY DIVIDING THE RESULTANT LAMINATE INTO A EXPANDABLE PARTICULATE MASS.
Claim 2
Independent Claim
82 words
A METHOD OF INCORPORATING INFUSIBLE(MATERIAL) INTO AN EXTRUDABLE EXPANSIBLE THERMOPLASTIC SYNTHETIC RESINOUS COMPOSITION COMPRISING: PREPARING A HEAT PLASTIFIED EXTRUDABLE MASS OF THE THERMOPLASTIC RESINOUS COMPOSITION, CONTINUOUSLY FORWARDING AND DIVIDING SAID MASS INTO AT LEAST TWO GENERALLY OPPOSED PORTIONS, ADDING BETWEEN SAID OPPOSED PORTIONS AN INFUSIBLE ADDITIVE MATERIAL, CONVERGING SAID GENERALLY OPPOSED PORTIONS TO INTIMATELY CONTACT SAID ADDITIVE FORMING A LAMINATE HAVING THE ADDITIVE MATERIAL POSITIONED BETWEEN LAYERS OF THE RESINOUS COMPOSITION AND SUBSEQUENTLY DIVIDING THE RESULTANT LAMINATE INTO A EXPANDABLE PARTICULATE MASS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |