US3339231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing by expansion-molding articles in thermoplastic material
Assignee: Individual
•
Filing: 1965-10-07
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Granted: 1967-09-05
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Expires: 1985-10-07
Abstract
No abstract record available.
Inventors
- 👤 Piotrowski Tadeusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:32
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/061; B29C49/062; B29C49/063; B29C49/064; B29C49/42; B29C49/48; B29C49/4823; B29C51/00; B29C51/02; C07C; C07C51/00; C07C51/09; B29C2049/023; B29C2049/4838; B29C2049/4846; B29C2049/4848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
FOR USE IN AN INJECTION MOLDING AND BLOWING APPARATUS FOR FORMING A BLOWN HOLLOW ARTICLE OF THERMOPLASTIC MATERIAL, A PREFORM CORE COMPRISING A SHELL RESILIENTLY MOUNTED ON AN INTERIOR SUPPORT MEANS, SAID INTERIOR SUPPORT MEANS CONSISTING OF A STEM EXTENDING INSIDE SAID SHELL, AND A BASE MEMBER ABOUT SAID STEM AND EXTENDING OUTWARD FROM SAID STEM AT LEAST AS FAR AS THE
Claim 2
Dependent Claim
62 words
FOR USE IN AN INJECTION MOLDING AND BLOWING APPARATUS FOR FORMING A BLOWN HOLLOW ARTICLE OF THERMOPLASTIC MATERIAL, A PREFORM CORE COMPRISING A SHELL RESILIENTLY MOUNTED ON AN INTERIOR SUPPORT MEANS, SAID INTERIOR SUPPORT MEANS CONSISTING OF A STEM EXTENDING INSIDE SAID SHELL, AND A BASE MEMBER ABOUT SAID STEM AND EXTENDING OUTWARD FROM SAID STEM AT LEAST AS FAR AS THE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |