US3278666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a blow molded object
Assignee: Dow Chemical Co
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Filing: 1963-07-17
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Granted: 1966-10-11
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Harold J Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:34
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/482; B29C37/00; B29C37/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF MAKING A BLOW MOLDED BOTTLE HAVING A REDUCED DIAMETER NECK PORTION INCLUDING THE STEPS OF EXTRUDING A PARISON, SURROUNDING THE PARISON WITH A MOLD HAVING CAVITY SPACES CAPABLE OF PRODUCING CORRUGATED TRIM SCRAP PORTIONS CAPABLE OF RELEAVING STRESSES DUE TO CONTRACTION OF THE BOTTLE DURING COOLING, GENERATING A PRESSURE DIFFERENTIAL OF THE EXTRUDED PARISON TO SHAPE THE BOTTLE, AND COOLING THE BOTTLE.
Claim 2
Independent Claim
65 words
A METHOD OF MAKING A BLOW MOLDED BOTTLE HAVING A REDUCED DIAMETER NECK PORTION INCLUDING THE STEPS OF EXTRUDING A PARISON, SURROUNDING THE PARISON WITH A MOLD HAVING CAVITY SPACES CAPABLE OF PRODUCING CORRUGATED TRIM SCRAP PORTIONS CAPABLE OF RELEAVING STRESSES DUE TO CONTRACTION OF THE BOTTLE DURING COOLING, GENERATING A PRESSURE DIFFERENTIAL OF THE EXTRUDED PARISON TO SHAPE THE BOTTLE, AND COOLING THE BOTTLE.
References Cited (Backward Citations)
GB752637A
Cited
US3082484A
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US3007594A
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US3120679A
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US3043461A
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US3080614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |