US3137748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow plastic article and process of making
Assignee: Primerica Inc
•
Filing: 1960-05-02
•
Granted: 1964-06-16
•
Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Makowski Alexander George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:05
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/071; B29C2049/023; B29C2949/00; B29C2949/07; B29C2949/072; B29C2949/0724; B29C2949/073; B29C2949/0733; B29C2949/076; B29C2949/0768; B29C2949/0769; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/078; B29C2949/20; B29C2949/22; B29C2949/24; B29C2949/26; B29C2949/28; Y; Y10; Y10S; Y10S264/00; Y10S264/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF FORMING HOLLOW ARTICLES OF ORGANIC PLASTIC MATERIAL COMPRISING PLASTICATING AN EXTRUSION GRADE ORGANIC PLASTIC MATERIAL HAVING A LOW MELT INDEX, INJECTION MOLDING SAID PLASTIC MATERIAL BY ADMITTING THE SAME AT A TEMPERATURE OF 450*F. AND AT A HIGH PRESSURE THROUGH AN ORIFICE INTO A CAVITY, THE OUTER BOUNDARY OF WHICH IS THE INNER SURFACE OF A MOLD AND THE INNER BOUNDARY OF WHICH IS THE OUTER SURFACE OF A CORE PIN WHICH IS SUBSTANTIALLY CONCENTRICALLY DISPOSED WITH RELATION TO THE INNER SURFACE OF THE MOLD TO FORM A PARISON,
Claim 2
Independent Claim
92 words
THE METHOD OF FORMING HOLLOW ARTICLES OF ORGANIC PLASTIC MATERIAL COMPRISING PLASTICATING AN EXTRUSION GRADE ORGANIC PLASTIC MATERIAL HAVING A LOW MELT INDEX, INJECTION MOLDING SAID PLASTIC MATERIAL BY ADMITTING THE SAME AT A TEMPERATURE OF 450*F. AND AT A HIGH PRESSURE THROUGH AN ORIFICE INTO A CAVITY, THE OUTER BOUNDARY OF WHICH IS THE INNER SURFACE OF A MOLD AND THE INNER BOUNDARY OF WHICH IS THE OUTER SURFACE OF A CORE PIN WHICH IS SUBSTANTIALLY CONCENTRICALLY DISPOSED WITH RELATION TO THE INNER SURFACE OF THE MOLD TO FORM A PARISON,
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |