US3468990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a substantially warp-free interiorly foamed,thermoplastic article
Assignee: Phillips Petroleum Co
•
Filing: 1966-03-30
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Granted: 1969-09-23
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Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Allen E Odell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:38
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/027; B29C44/04; B29C44/0407; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2283316A
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US2825721A
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US3058161A
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US3200176A
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US3218375A
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US3211605A
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US3268636A
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US3306960A
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US3341043A
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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) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |