US3300552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for selectively foaming surface areas on a plastic article
Assignee: Monsanto Co
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Filing: 1964-10-28
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Granted: 1967-01-24
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Expires: 1984-10-28
Abstract
No abstract record available.
Inventors
- 👤 Richard K Shelby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3442; B29C44/3446; B29C44/3453; B29C44/02; B29C44/04; B29C44/0461; C; C08; C08J; C08J7/00; C08J7/02; Y; Y10; Y10S; Y10S264/00; Y10S264/82; Y10S521/00; Y10S521/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE PROCESS FOR SELECTIVELY FOAMING PREDETERMINED SURFACE AREAS ON A PLASTIC ARTICLE WHICH COMPRISES EXPOSING A SURFACE OF A PLASTIC ARTICLE TO A PRIMARY LIQUID SUBSTANCE WHICH IS ABSORBABLE BY THE PLASTIC AND WHICH WILL FORM A CONSTANT BOILING MIXTURE WHEN COMBINED WITH A SECONDARY LIQUID SUBSTANCE, HAVING A BOILING POINT TEMPERATURE BELOW THE BOILING POINT TEMPERATURE OF SAID PRIMARY LIQUID SUBSTANCE, SELECTIVELY STEEPING AT LEAST A PORTION OF SAID EXPOSED SURFACE IN SAID SECONDARY LIQUID SUBSTANCE, SUBJECTING SAID EXPOSED SURFACE INITIALLY TO A TEMPERATURE LEVEL WHICH WILL CAUSE A SUBSTANTIAL QUANTITY OF THE PRIMARY AND SECONDARY LIQUID MIXTURE ABSORBED WITHIN THE PORTION OF THE SURFACE WHICH WAS EXPOSED TO THE PRIMARY LIQUID SUBSTANCE AND STEEPED IN THE SECONDARY LIQUID SUBSTANCE TO DIFFUSE FROM THE PLASTIC AND THEN SECONDARILY TO A TEMPERATURE LEVEL ABOVE THE BOILING POINT TEMPERATURE OF SAID PRIMARY LIQUID SUBSTANCE.
Claim 2
Dependent Claim
143 words
THE PROCESS FOR SELECTIVELY FOAMING PREDETERMINED SURFACE AREAS ON A PLASTIC ARTICLE WHICH COMPRISES EXPOSING A SURFACE OF A PLASTIC ARTICLE TO A PRIMARY LIQUID SUBSTANCE WHICH IS ABSORBABLE BY THE PLASTIC AND WHICH WILL FORM A CONSTANT BOILING MIXTURE WHEN COMBINED WITH A SECONDARY LIQUID SUBSTANCE, HAVING A BOILING POINT TEMPERATURE BELOW THE BOILING POINT TEMPERATURE OF SAID PRIMARY LIQUID SUBSTANCE, SELECTIVELY STEEPING AT LEAST A PORTION OF SAID EXPOSED SURFACE IN SAID SECONDARY LIQUID SUBSTANCE, SUBJECTING SAID EXPOSED SURFACE INITIALLY TO A TEMPERATURE LEVEL WHICH WILL CAUSE A SUBSTANTIAL QUANTITY OF THE PRIMARY AND SECONDARY LIQUID MIXTURE ABSORBED WITHIN THE PORTION OF THE SURFACE WHICH WAS EXPOSED TO THE PRIMARY LIQUID SUBSTANCE AND STEEPED IN THE SECONDARY LIQUID SUBSTANCE TO DIFFUSE FROM THE PLASTIC AND THEN SECONDARILY TO A TEMPERATURE LEVEL ABOVE THE BOILING POINT TEMPERATURE OF SAID PRIMARY LIQUID SUBSTANCE.
References Cited (Backward Citations)
US3042972A
Cited
US3262625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |