US3188295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of foaming a thermoplastic organic polymer containing a nucleating agent and an organic bromide
Assignee: Dow Chemical Co
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Filing: 1962-06-27
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Granted: 1965-06-08
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Expires: 1982-06-27
Abstract
No abstract record available.
Inventors
- 👤 Donald E Ballast
- 👤 Griffin John Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:54
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/16; C08K5/34; Y; Y10; Y10S; Y10S264/00; Y10S264/16; Y10S521/00; Y10S521/907; Y10S521/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR MAKING A CELLULAR ARTICLE FROM A POLYMER COMPOSITION CAPABLE OF BEING FOAMED TO PRODUCE A CELLULAR BODY COMPOSED FOR THE MOST PART OF INDIVIDUALLY-CLOSED THIN-WALLED CELLS AND WHEREIN THE POLYMER COMPOSITION COMPRISES A SYNTHETIC NORMALLY SOLID THERMOPLASTIC ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) COPOLYMERS OF FROM 40 TO 35 PERCENT BY WEIGHT OF AT LEAST ONE MONOALKENYL AROMATIC HYDROCARBON OF THE BENZENE SERIES AND FROM 60 TO 65 PERCENT OF METHYL METHACRYLATE, (B) POLYETHYLENE, (C) POLYPROPYLENE, AND (D) ALKENYL AROMATIC POLYMERS CONTAINING IN CHEMICALLY COMBINED FORM AT LEAST 50 PERCENT BY WEIGHT OF A TLEAST ONE ALKENYL AROMATIC COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR MAKING A CELLULAR ARTICLE FROM A POLYMER COMPOSITION CAPABLE OF BEING FOAMED TO PRODUCE A CELLULAR BODY COMPOSED FOR THE MOST PART OF INDIVIDUALLY-CLOSED THIN-WALLED CELLS AND WHEREIN THE POLYMER COMPOSITION COMPRISES A SYNTHETIC NORMALLY SOLID THERMOPLASTIC ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) COPOLYMERS OF FROM 40 TO 35 PERCENT BY WEIGHT OF AT LEAST ONE MONOALKENYL AROMATIC HYDROCARBON OF THE BENZENE SERIES AND FROM 60 TO 65 PERCENT OF METHYL METHACRYLATE, (B) POLYETHYLENE, (C) POLYPROPYLENE, AND (D) ALKENYL AROMATIC POLYMERS CONTAINING IN CHEMICALLY COMBINED FORM AT LEAST 50 PERCENT BY WEIGHT OF A TLEAST ONE ALKENYL AROMATIC COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |