Patent US3056753A successfully refreshed from Google Patents.
US3056753A
Expired / Lapsed
US
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Treatment of expandable polymeric particles
Assignee: Beazer East Inc
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Filing: 1961-08-10
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Granted: 1962-10-02
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Michael F Fronko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:45
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/461; C; C08; C08J; C08J9/00; C08J9/22; Y; Y10; Y10S; Y10S264/00; Y10S264/09; Y10S264/10; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PROCESS FOR TREATING EXPANDABLE POLYMERIC PARTICLES SO AS TO DECREASE THE TIME REQUIRED IN THE COOLING PORTION OF A MOLDING CYCLE, WHICH COMPRISES: PARTIALLY EXPANDING THE POLYMERIC PARTICLES, CRUSHING THE PARTICLES, AND THEREAFTER AGAIN PARTIALLY EXPANDING THE PARTICLES.
Claim 2
Dependent Claim
39 words
A PROCESS FOR TREATING EXPANDABLE POLYMERIC PARTICLES SO AS TO DECREASE THE TIME REQUIRED IN THE COOLING PORTION OF A MOLDING CYCLE, WHICH COMPRISES: PARTIALLY EXPANDING THE POLYMERIC PARTICLES, CRUSHING THE PARTICLES, AND THEREAFTER AGAIN PARTIALLY EXPANDING THE PARTICLES.
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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |