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US3757978A
Expired / Lapsed
US
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Biaxially oriented blow molded article with ribs parallel to seam
Assignee: Phillips Petroleum Co
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Filing: 1971-12-22
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Granted: 1973-09-11
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Expires: 1991-12-22
Abstract
Abstract A blow molded hollow article, such as a bottle, formed under conditions giving biaxial orientation, said bottle having ribs in the bottom wall parallel to the seam.
Inventors
- 👤 D Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:01
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/0261; B65D1/0276; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/4802; B29C49/4817
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
A biaxially oriented hollow article having a seal line in a bottom wall thereof, said seal line being within a bead depending from said bottom wall with at least one rib in said bottom wall running parallel to said seal line and spaced laterally therefrom.
Claim 2
Dependent Claim
45 words
A biaxially oriented hollow article having a seal line in a bottom wall thereof, said seal line being within a bead depending from said bottom wall with at least one rib in said bottom wall running parallel to said seal line and spaced laterally therefrom.
Claim 3
Dependent Claim
23 words
Article according to claim 1 wherein said rib is in the form of a groove as viewed from inside of said hollow article.
Claim 4
Dependent Claim
25 words
Article according to claim 1 wherein said article is made of a crystalline polymer of at least one mono-1-olefin having 2-8 carbon atoms per molecule.
Claim 5
Dependent Claim
12 words
Article according to claim 1 wherein said article is made of polypropylene.
Claim 6
Dependent Claim
12 words
Article according to claim 1 wherein said rib has essentially square corners.
Claim 7
Dependent Claim
11 words
Article according to claim 1 iN the form of a bottle.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |