USRE27484E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method op forming partly foamed plastic articles
Assignee: —
•
Filing: 1966-06-30
•
Granted: 1972-09-26
•
Expires: 1986-06-30
Abstract
Abstract 8. IN A PROCESS FOR THE PRODUCTION OF BLOW MOLDED HOLLOW PLASTIC ARTICLES WHEREIN A PARISON OF SAID PLASTIC IS FORMED AND THEN SAID PARISON IS EXPANDED WITHIN A MOLD TO CONFORM TO THE CONTOUR OF SAID MOLD BY A FLUID MEDIUM, THE IMPROVEMENT COMPRISING INCORPORATING A FOAMING AGENT INTO SAID PLASTIC PRIOR TO FORMATION OF SAID PARISON SO THAT SAID PARSION IS FOAMED BEFORE BEING MOLDED, THEREBY FORMING A FOAMED PLASTIC ARTICLE AS A PRODUCT OF THE PROCESS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:09
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C2949/00; B29C2949/30; B29C2949/3032; B29C2949/3041; B29C48/06; B29L; B29L2031/00; B29L2031/712; B29L2031/7132
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
IN A PROCESS FOR THE PRODUCTION OF BLOW MOLDED HOLLOW PLASTIC ARTICLES WHEREIN A PARISON OF SAID PLASTIC IS FORMED AND THEN SAID PARISON IS EXPANDED WITHIN A MOLD TO CONFORM TO THE CONTOUR OF SAID MOLD BY A FLUID MEDIUM, THE IMPROVEMENT COMPRISING INCORPORATING A FOAMING AGENT INTO SAID PLASTIC PRIOR TO FORMATION OF SAID PARISON SO THAT SAID PARSION IS FOAMED BEFORE BEING MOLDED, THEREBY FORMING A FOAMED PLASTIC ARTICLE AS A PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |