Patent US3246069A successfully refreshed from Google Patents.
US3246069A
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Rotational method of making a hollow molded multilayered article
Assignee: Wonder Products Co
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Filing: 1962-02-26
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Granted: 1966-04-12
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Demon L Maynord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:45
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/22; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C37/00; B29C37/0025; B29C37/0028; B29C41/04; B29C41/06; B29L; B29L2022/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD OF MAKING A HOLLOW MOLDED ARTICLE, WHICH COMPRISES: COATING THE MOLDING SURFACE OF A HOLLOW SECTIONAL MOLD WITH A CONTINUOUS THIN LAYER OF A PLASTISOL, CHARGING INTO THE MOLD A THERMOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE, CLOSING THE MOLD, ROTATING SAID MOLD IN A MULTIPLICITY OF PLANES,
Claim 2
Independent Claim
54 words
THE METHOD OF MAKING A HOLLOW MOLDED ARTICLE, WHICH COMPRISES: COATING THE MOLDING SURFACE OF A HOLLOW SECTIONAL MOLD WITH A CONTINUOUS THIN LAYER OF A PLASTISOL, CHARGING INTO THE MOLD A THERMOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYPROPYLENE, CLOSING THE MOLD, ROTATING SAID MOLD IN A MULTIPLICITY OF PLANES,
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |