US3347966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming biaxially oriented thermoplastic articles
Assignee: Phillips Petroleum Co
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Filing: 1965-03-04
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Granted: 1967-10-17
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Charles L Seefluth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:44
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/08; B29C49/10; B29C49/14; B29C33/00; B29C33/02; B29C33/44; B29C33/48; B29C33/50; B29C49/42; B29C49/64; B29C49/6409; B29C49/6418; B29C35/00; B29C35/02; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A METHOD FOR BLOW MOLDING A HOLLOW ARTICLE HAVING AN ORIENTED BOTTOM AND ORIENTED SIDES, SAID METHOD COMPRISING PLACING NEAR THE BOTTOM OF A HOLLOW MOLD A HEATED CONICAL PARISON HAVING AN OPEN END AND A CLOSED END AND BEING TAPERED IN WALL THICKNESS FROM SAID OPEN END TO SAID CLOSED END, APPLYING A DIFFERENTIAL PRESSURE SO THAT EXPANSION OF SAID PARISON TAKES PLACE AT AN AREA OF MINIMUM WALL THICKNESS AND SAID PARISON SEQUENTIALLY EXPANDS AGAINST SAID MOLD WALLS AS EXPANSION CONTINUES, AND WITHDRAWING SAID OPEN END AWAY FROM SAID BOTTOM OF SAID MOLD AS EXPANSION CONTINUES.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |