US3449477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming plastic articles having foamed cores
Assignee: Monsanto Co
•
Filing: 1968-01-03
•
Granted: 1969-06-10
•
Expires: 1988-01-03
Abstract
No abstract record available.
Inventors
- 👤 James C Logomasini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:25
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3442; B29C44/3446; B29C44/3453; B29C44/02; B29C44/04; B29C44/56; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1376
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3345439A
Cited
US3168207A
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US3299192A
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US3260781A
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US3317363A
Cited
US3330784A
Cited
US3324210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |